Latest Update：2026/03/24 10:39:08

KAWACHI Masanobu

Researcher Name: KAWACHI Masanobu

Div (Section) name/title: Biodiversity Division（Biodiversity Resource Conservation Office）／Senior Research Associate

Research Subject: Studies on the biodiversity of algae concerning with environmental problems and algal culture collection

Degree(s): Doctor of Science

Professional Qualification(s): Biology

Environmental Speciality Field: water bloom,biodiversity,biofuel

Membership of Academic Society: The Japanese Society of Phycology (JSP) ,Japan Society for Culture Collections (JSCC),The Botanical Society of Japan,International Phycological Society

Research Subject

Fiscal Year: 2025
- 27215 : Integrative research toward balancing conservation and use of biodiversity and behavior change
- 27233 : Research on evaluation and clarification of effects and mechanisms of climate change
- 27248 : Biodiversity Domain: Foresight and Advanced Basic Research
- 27250 : Biodiversity Domain: Intellectual Research Infrastructure Development
- 27363 : Intellectual research infrastructure development：Systematic monitoring, development of information on impact prediction and adaptation, and development of tools in the field of climate change adaptation
- 27413 : Atmospheric and Oceanic Monitoring
- 27419 : Developing a water quality health assessment system for offshore exploitation sites
- 27522 : Collection, preservation and distribution of algal resources
Fiscal Year: 2024
- 26828 : Integrative research toward balancing conservation and use of biodiversity and behavior change
- 26848 : Research on evaluation and clarification of effects and mechanisms of climate change
- 26866 : Biodiversity Domain: Foresight and Advanced Basic Research
- 26869 : Biodiversity Domain: Intellectual Research Infrastructure Development
- 26945 : Developing a water quality health assessment system for offshore exploitation sites
- 27000 : Collection, preservation and distribution of algal resources
- 27100 : Intellectual research infrastructure development：Systematic monitoring, development of information on impact prediction and adaptation, and development of tools in the field of climate change adaptation
- 27102 : Atmospheric and Oceanic Monitoring
Fiscal Year: 2023
- 26419 : Integrative research toward balancing conservation and use of biodiversity and behavior change
- 26435 : Research on evaluation and clarification of effects and mechanisms of climate change
- 26454 : Biodiversity Domain: Foresight and Advanced Basic Research
- 26456 : Biodiversity Domain: Intellectual Research Infrastructure Development
- 26507 : Collection, preservation and distribution of algal resources
- 26508 : Collection and characterization of useful algae
- 26654 : Atmospheric and Oceanic Monitoring
- 26725 : Developing a water quality health assessment system for offshore exploitation sites
- 26736 : Intellectual research infrastructure development：Systematic monitoring, development of information on impact prediction and adaptation, and development of tools in the field of climate change adaptation
Fiscal Year: 2022
- 25983 : Integrative research toward balancing conservation and use of biodiversity and behavior change
- 26001 : Research on evaluation and clarification of effects and mechanisms of climate change
- 26012 : Biodiversity Domain: Foresight and Advanced Basic Research
- 26014 : Biodiversity Domain: Intellectual Research Infrastructure Development
- 26119 : Collection and characterization of useful algae
- 26264 : Atmospheric and Oceanic Monitoring
- 26293 : Intellectual research infrastructure development：Systematic monitoring, development of information on impact prediction and adaptation, and development of tools in the field of climate change adaptation
- 26345 : Development of monitoring method by imaging analysis of meiofauna in deep-sea sediments
- 26347 : Collection, preservation and distribution of algal resources
Fiscal Year: 2021
- 25516 : Integrative research toward balancing conservation and use of biodiversity and behavior change
- 25535 : Research on evaluation and clarification of effects and mechanisms of climate change
- 25613 : Prediction of Climate Change Impacts on Enclosed Coastal Sea Environment and Adaptations
- 25674 : Intellectual research infrastructure development：Systematic monitoring, development of information on impact prediction and adaptation, and development of tools in the field of climate change adaptation
- 25809 : Biodiversity Domain: Foresight and Advanced Basic Research
- 25811 : Biodiversity Domain: Intellectual Research Infrastructure Development
- 25833 : Atmospheric and Oceanic Monitoring
- 25925 : Collection, preservation and distribution of algal resources
- 25927 : Study on practical assessment technique for marine environment during seafloor mineral mining
- 25928 : Development of monitoring method by imaging analysis of meiofauna in deep-sea sediments
Fiscal Year: 2020
- 25113 : Long-term Monitoring and Database for Global Environmental Research and Supporting for Related Activities
- 25117 : Collection, Preservation and Distribution of Microbes and Endangered Algae
- 25327 : Studies on Advancing the Methods for Climate Change Impacts Assessment
- 25359 : Study on practical assessment technique for marine environment during seafloor mineral mining
- 25360 : Collection, preservation and distribution of algal resources
- 25366 : Development of short-term chronic toxicity tests using marine and estuarine species
- 25368 : Development of monitoring method by imaging analysis of meiofauna in deep-sea sediments
- 25411 : Atmospheric and Oceanic Monitoring
- 25432 : Research into Observation, Monitoring and Detection of Climate Change and Resultant Impacts
- 25439 : Prediction of Climate Change Impacts on Enclosed Coastal Sea Environment and Adaptations
Fiscal Year: 2019
- 24745 : Long-term Monitoring and Database for Global Environmental Research and Supporting for Related Activities
- 24749 : Collection, Preservation and Distribution of Microbes and Endangered Algae
- 24975 : Studies on Advancing the Methods for Climate Change Impacts Assessment
- 25019 : Atmospheric and Oceanic Monitoring
- 25021 : Development of short-term chronic toxicity tests using marine and estuarine species
- 25052 : Study on practical assessment technique for marine environment during seafloor mineral mining
- 25054 : Collection, preservation and distribution of algal resources
- 25056 : Research into Observation, Monitoring and Detection of Climate Change and Resultant Impacts
- 25075 : Prediction of Climate Change Impacts on Enclosed Coastal Sea Environment and Adaptations
Fiscal Year: 2018
- 24315 : Long-term monitoring and database for global environmental research and supporting for related activities
- 24319 : Collection, preservation and distribution of microbes and endangered algae
- 24538 : Development of short-term chronic toxicity tests using marine and estuarine species
- 24543 : Assessment of impact of climate change on the environment of an enclosed sea in Japan
- 24578 : Atmospheric and Oceanic Monitoring
Fiscal Year: 2017
- 23881 : Collection, preservation and distribution of microbes and endangered algae
- 24052 : Assessment of impact of climate change on the environment of an enclosed sea in Japan
- 24065 : Collection, preservation and distribution of algal resources
- 24066 : Research and Development of Monitoring and Forecasting Systems for Marine Ecosystem Management
- 24146 : Atmospheric and Oceanic Monitoring
Fiscal Year: 2016
- 23474 : Collection, preservation and distribution of microbes and endangered algae
- 23672 : Collection, preservation and distribution of algal resources
- 23683 : Research and Development of Monitoring and Forecasting Systems for Marine Ecosystem Management
- 23699 : Development of biodiversity evaluation and environmental forecast with digital DNA chip
- 23735 : Atmospheric and Oceanic Monitoring
- 23771 : Assessment of impact of climate change on the environment of an enclosed sea in Japan
Fiscal Year: 2015
- 23007 : Research project on observation and evaluation of landscape and genetic aspects of biodiversity
- 23032 : Collection, preservation and distribution of microbes and endangered algae
- 23151 : Genome analyses of bloom-forming cyanobacterium Microcystis aeruginosa which have a peculiar occurrence in Lake Kasumigaura
- 23190 : Atmospheric and Oceanic Monitoring
- 23248 : Development of biodiversity evaluation and environmental forecast with digital DNA chip
- 23250 : Collection, preservation and distribution of algal resources
- 23262 : Research and Development of Monitoring and Forecasting Systems for Marine Ecosystem Management
- 23268 : The creation of advanced use and culturing type next-generation fishery industry of unutilized algae
- 23315 : Evaluation and projection of spatio-temporal dynamics of coral reef biodiversity
Fiscal Year: 2014
- 22595 : Research project on observation and evaluation of landscape and genetic aspects of biodiversity
- 22620 : Collection, preservation and distribution of microbes and endangered algae
- 22830 : Evaluation and projection of spatio-temporal dynamics of coral reef biodiversity
- 22833 : Development of biodiversity evaluation and environmental forecast with digital DNA chip
- 22834 : Collection, preservation and distribution of algal resources
- 22920 : Atmospheric and Oceanic Monitoring
- 22938 : Research and Development of Monitoring and Forecasting Systems for Marine Ecosystem Management
- 22962 : The creation of advanced use and culturing type next-generation fishery industry of unutilized algae
Fiscal Year: 2013
- 22179 : Research project on observation and evaluation of landscape and genetic aspects of biodiversity
- 22204 : Collection, preservation and distribution of microbes and endangered algae
- 22206 : Monitoring projects and database management of biodiversity and ecosystem
- 22357 : Comparative evolutionary studies on diatoms and palmaleans
- 22363 : Development of biodiversity evaluation and environmental forecast with digital DNA chip
- 22379 : Atmospheric and Oceanic Monitoring
- 22421 : Collection, preservation and distribution of algal resources
- 22509 : Evaluation and projection of spatio-temporal dynamics of coral reef biodiversity
Fiscal Year: 2012
- 21750 : Research Project on Observation and Evaluation of Landscape and Genetic Aspects of Biodiversity
- 21775 : Collection, preservation and distribution of microbes and endangered algae
- 21777 : Monitoring projects and database management of biodiversity and ecosystem
- 21855 : Comparative evolutionary studies on diatoms and palmaleans
- 21856 : Monitoring of unconfirmed harmful phytoplankton from the Eastern Tokyo Bay
- 21915 : Development of biodiversity evaluation and environmental forecast with Digital DNA chip
- 21916 : Collection, preservation and distribution of algal resources
- 21992 : Evaluation and projection of spatio-temporal dynamics of coral reef biodiversity
- 22118 : Atmospheric and Oceanic Monitoring
Fiscal Year: 2011
- 21333 : Collection, preservation and distribution of microbes and endangered algae
- 21335 : Monitoring projects and database management of biodiversity and ecosystem
- 21383 : National research project for mass cultivation of oil producing Botryococcus in Japan
- 21396 : Meta-Genomics and taxonomy of uncultivated marine microalgae based on whole genome amplification of cells sorted by flow cytometry
- 21407 : Research Project on Observation and Evaluation of Landscape and Genetic Aspects of Biodiversity
- 21566 : Evaluation and projection of spatio-temporal dynamics of coral reef biodiversity
- 21595 : Atmospheric and Oceanic Monitoring
- 21693 : Comparative evolutionary studies on diatoms and palmaleans
- 21694 : Monitoring of non-coccolith cell stage of the coccolithophorids in Hakata Bay
- 21695 : Monitoring of unconfirmed harmful phytoplankton from the Eastern Tokyo Bay
- 21720 : Development of biodiversity evaluation and environmental forecast with Digital DNA chip
Fiscal Year: 2010
- 20850 : Preliminary investigation of DNA barcoding of algae and chironomids massively growing in inland waters
- 20946 : National research project for mass cultivation of oil producing Botryococcus in Japan
- 21143 : Collection and long term preservation of endangered algae
- 21148 : Collection, preservation and distribution of algae
- 21157 : Taxonomic evaluation of algal strains maintained in the Microbial Culture Collection at NIES (NIES-Collection) and upgrading of strain database
- 21198 : Screening of coral symbionts sensitive to water temperature rise
- 21199 : Meta-Genomics and taxonomy of uncultivated marine microalgae based on whole genome amplification of cells sorted by flow cytometry
- 21212 : Development of integrated environmental management for Changjiang River basin to conserve the sound environmental conditions in East China Sea
Fiscal Year: 2009
- 20432 : Basic Research for production of alternative energy by using microalgae
- 20470 : National research project for mass cultivation of oil producing Botryococcus in Japan
- 20506 : Meta-Genomics and taxonomy of uncultivated marine microalgae based on whole genome amplification of cells sorted by flow cytometry
- 20525 : Collection and long term preservation of endangered algae
- 20526 : Taxonomic evaluation of algal strains maintained in the Microbial Culture Collection at NIES (NIES-Collection) and upgrading of strain database
- 20554 : Collection, preservation and distribution of algae
- 20682 : Development of integrated environmental management for Changjiang River basin to conserve the sound environmental conditions in East China Sea
- 20760 : Early detection of the ecesis and the dynamics of a marine invasive species from ballast water and ship hulls
- 20761 : Analysis of settlement and pathway of harmful phytoplankton Chattonella marina first occurring in Tokyo Bay
Fiscal Year: 2008
- 20198 : Basic Research for production of alternative energy by using microalgae
- 20215 : Collection and long term preservation of endangered algae
- 20216 : Collection, preservation and distribution of algae
- 20218 : Taxonomic evaluation of algal strains maintained in the Microbial Culture Collection at NIES (NIES-Collection) and upgrading of strain database
- 20289 : Life cycle analysis of Chattonella by microsatellite markers
- 20290 : Early detection of the ecesis and the dynamics of a marine invasive species from ballast water and ship hulls
- 20388 : National research project for mass cultivation of oil producing Botryococcus in Japan
Fiscal Year: 2007
- 10411 : Taxonomic re-evaluation of microalgal strains maintained in the Microbial Culture Collection at NIES (NIES-Collection) and upgrading of their database
- 10430 : Air pollution assessment based on genetic diversity in lichen
- 10629 : Collection and long term preservation of endangered algae
- 10654 : Generating mechanism of coccolithophorid bloom in Hakata bay
- 10688 : Life cycle analysis of Chattonella by microsatellite markers
- 10708 : Early detection of the ecesis and the dynamics of a marine invasive species from ballast water and ship hulls
- 10726 : Basic Research for production of alternative energy by using microalgae
- 10752 : Collection, preservation and distribution of algae
Fiscal Year: 2006
- 10017 : Collection, preservation and distribution of algae as genetic resources
- 10064 : Risk management and monitoring of disruptive marine invasive species from ballast water and ship hulls
- 10075 : Technological development of energy regeneration from microalgae
- 10077 : Pilot Project on Mekong River Ecosystem Monitoring
- 10135 : Taxonomic re-evaluation of microalgal strains maintained in the Microbial Culture Collection at NIES (NIES-Collection) and upgrading of their database
- 10153 : Air pollution assessment based on genetic diversity in lichen
- 10363 : Collection and long term preservation of endangered algae
Fiscal Year: 2005
- 9390 : Coccolithophorid biodiversity and the application to the global environment monitoring
- 9431 : Collection, preservation and distribution of algae as genetic resources
- 9533 : Risk management and monitoring of disruptive marine invasive species from ballast water and ship hulls
- 9545 : Technological development of energy regeneration from microalgae
- 9548 : Pilot Project on Mekong River Ecosystem Monitoring
- 9631 : Taxonomic re-evaluation of microalgal strains maintained in the Microbial Culture Collection at NIES (NIES-Collection) and upgrading of their database
- 9648 : Air pollution assessment based on genetic diversity in lichen
Fiscal Year: 2004
- 8944 : Information gathering and evaluation of modern taxonomic properties for microalgaemaintained in the Microbial Culture Collection at NIES
- 9024 : Coccolithophorid biodiversity and the application to the global environment monitoring
- 9062 : Element cycle response to the dynamic change of environmental loads from land in the East China Sea
- 9114 : Collection, preservation and distribution of algae as genetic resources
- 9285 : Risk management and monitoring of disruptive marine invasive species from ballast water and ship hulls
- 9296 : Technological development of energy regeneration from microalgae
- 9299 : Pilot Project on Mekong River Ecosystem Monitoring
Fiscal Year: 2003
- 8621 : Information gathering and evaluation of modern taxonomic properties for microalgaemaintained in the Microbial Culture Collection at NIES
- 8658 : Study on development of assesment methods for water pollultion and monitoring methods for toxic cyanobacteria in water resource regions in Asia
- 8742 : Coccolithophorid biodiversity and the application to the global environment monitoring
- 8792 : Element cycle response to the dynamic change of environmental loads from land in the East China Sea
- 8828 : Collection, preservation and distribution of algae as genetic resources
Fiscal Year: 2002
- 8321 : International collaborative research on the manegement of wetland ecosystem
- 8388 : Information gathering and evaluation of modern taxonomic properties for microalgae maintained in the Microbial Culture Collection at NIES
- 8441 : Study on development of assesment methods for water pollultion and monitoring methods for toxic cyanobacteria in water resource regions in Asia
- 8524 : Coccolithophorid biodiversity and the application to the global environment monitoring
Fiscal Year: 2001
- 8028 : International collaborative research on the manegement of wetland ecosystem
- 8141 : Information gathering and evaluation of modern taxonomic properties for microalgae maintained in the Microbial Culture Collection at NIES
- 8225 : O-1 Study on development of assesment methods for water pollultion and monitoring methods for toxic cyanobacteria in water resource regions in Asia
- 8288 : Study on coccolithophorid diversity and application of global environment monitoring

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Research Result (Publication)

Original Paper

Description of four new species of Mychonastes (Chlorophyceae) from Japanese freshwater habitats based on molecular and morphological data

Presenter : Nozaki H., Matsuzaki R., Mori F., Sato M., Yamaguchi H., Higashiyama T., Kawachi M., Tanabe Y.
Title : , Phycological Research, 73:35-48 (2025)
Original Paper

Establishment of cryopreserved culture strains of Volvox (Chlorophyceae)

Presenter : Nozaki H., Mori F., Tanaka Y., Matsuzaki R., Yamaguchi H., Kawachi M., Tanabe Y.
Title : , Phycologia, 64(5):389-393 (2025)
Original Paper

Taxonomic identification of an Australian strain of Volvox amboensis (Chlorophyceae)

Presenter : Nozaki H., Matsuzaki R., Ishida T., Ueki N., Kawachi M., Tanabe Y.
Title : , Microbial Resources and Systematics, 41(2):57-64 (2025)
Book

Assessment of Possible Environmental Impacts Using Flow-Cytometric Analysis of Metal Toxicity in Marine Phytoplankton

Presenter : Ota S., Koshikawa H., Kawachi M.
Title : , Deep-Sea Mining and the Water Column (2024)
Original Paper

Two species of the green algae Volvox sect. Volvox from the Japanese ancient lake, Lake Biwa

Presenter : Nozaki H., Matsuzaki R., Shimotori K., Ueki N., Wirawan H., Wuttipong M., Yamaguchi H., Tanabe Y., Kawachi M.
Title : , PLOS One, 19(9): (2024)
Original Paper

Cryopreservation of two species of the multicellular volvocine green algal genus Astrephomene

Presenter : Nozaki H., Mori F., Tanaka Y., Matsuzaki R., Yamashita S., Yamaguchi H., Kawachi M.
Title : , BMC Microbiology, 23(16): (2023)
Original Paper

Genomic analysis of an ultrasmall freshwater green alga, Medakamo hakoo

Presenter : Kato S., Misumi O., Maruyama S., Nozaki H., Tsujimoto-Inui Y., Takusagawa M., Suzuki S., Kuwata K., Noda S., Ito N., Okabe Y., Sakamoto T., Yagisawa F., Matsunaga T.M., Matsubayashi Y., Yamaguchi H., Kawachi M., Kuroiwa H.
Title : , communications biology, 6(1): (2023)
Original Paper

Cryopreservation of eight genera of the multicellular volvocine green algae

Presenter : Mori F., Tanaka Y., Matsuzaki R., Nozaki H., Yamaguchi H., Kawachi M.
Title : , Microbial Resources and Systematics, 39(2):77-87 (2023)
Original Paper

Propidium iodide staining and flow cytometry-based assessment of heavy metal impact on marine phytoplankton

Presenter : Ota S., Fuchida S., Yamaguchi H., Yamagishi T., Yamamoto H., Koshikawa H., Kawachi M.
Title : , Cytologia, 87(2):177-187 (2022)
Original Paper

Cryopreservation of vegetative cells and zygotes of the multicellular volvocine green alga Gonium pectorale

Presenter : Nozaki H., Mori F., Tanaka Y., Matsuzaki R., Yamaguchi H., Kawachi M.
Title : , BMC Microbiology, 22(103): (2022)
Other Publications

What Happened before Losses of Photosynthesis in Cryptophyte Algae?

Presenter : Suzuki S., Matsuzaki R., Yamaguchi H., Kawachi M.
Title : , Molecular biology and evolution, 39(2):1-7 (2022)
Original Paper

The early acquisition of symbiotic algae benefits larval survival and juvenile growth in the coral Acropora tenuis

Presenter : Hazraty-Kari S., Morita M., Kawachi M., Harii S.
Title : , Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, 337(5):559-565 (2022)
Original Paper

Potential genetic diversity of Synechococcus-related strains maintained in the Microbial Culture Collection of the National Institute for Environmental Studies, Japan

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Title : , Microbial Resources and Systematics, 38(2):63-74 (2022)
Original Paper

Morphology, mating system and taxonomy of Volvox africanus (Volvocaceae, Chlorophyceae) from Thailand

Presenter : Nozaki H., Mahakham W., Heman W., Matsuzaki R., Kawachi M.
Title : , Botanical Studies, 63(1): (2022)
Original Paper

Rapid transcriptomic and physiological changes in the freshwater pennate diatom Mayamaea pseudoterrestris in response to copper exposure

Presenter : Suzuki S., Ota S., Yamagishi T., Tuji A., Yamaguchi H., Kawachi M.
Title : , DNA Research, 29(6):1-12 (2022)
Original Paper

The Rubisco small subunits in the green algal genus Chloromonas provide insights into evolutionary loss of the eukaryotic carbon-concentrating organelle, the pyrenoid

Presenter : Matsuzaki R., Suzuki S., Yamaguchi H., Kawachi M., Kanesaki Y., Yoshikawa H., Mori T., Nozaki H.
Title : , BMC Ecology and Evolution, 21:11 (2021)
Original Paper

Complete sequence and structure of the genome of the harmful algal bloom-forming cyanobacterium Planktothrix agardhii NIES-204T and detailed analysis of secondary metabolite gene clusters

Presenter : Shimura Y., Fujisawa T., Hirose Y., Misawa N., Kanesaki Y., Nakamura Y., Kawachi M.
Title : , Harmful Algae, 101: (2021)
Original Paper

Development of a time-series shotgun metagenomics database for monitoring microbial communities at the Pacific coast of Japan

Presenter : Yoshitake K., Kimura G., Sakami T., Watanabe T., Taniuchi Y., Kakehi S., Kuwata A., Yamaguchi H., Kataoka T. , Kawachi M., Ikeho K., Tan E., Igarashi Y., Ohtsubo M., Watanabe S., Suzuki Y. , Asakawa S., Ishino S., Tashiro K. , Ishino Y., Kobayashi T., Mineta K., Gojobori T.
Title : , Scientific Reports volume, 11:12222 (2021)
Original Paper

The enigmatic snow microorganism, Chionaster nivalis, is closely related to Bartheletia paradoxa (Agaricomycotina, Basidiomycota)

Presenter : Matsuzaki R., Takashima Y., Suzuki I., Kawachi M., Nozaki H., Nohara S., Degawa Y.
Title : , Microbes and Environments, 36(2): (2021)
Original Paper

Identification of a dual orange/far-red and blue light photoreceptor from an oceanic green picoplankton

Presenter : Makita Y., Suzuki S., Fushimi K., Shimada S., Suehisa A., Hirata M., Kuriyama T., Kurihara Y., Hamasaki H., Okubo-Kurihara E., Yoshitake K., Watanabe T., Sakuta M., Gojobori T., Sakami T., Narikawa R., Yamaguchi H., Kawachi M., Matsui M.
Title : , Nature Communications, 12(1):3593 (2021)
Original Paper

Kinetic investigation of galvanic dissolution of ZnS and PbS with FeS2 from hydrothermal sulfides in seawater

Presenter : Fuchida S., Kawachi M., Koshikawa H.
Title : , Applied Geochemistry, 129: (2021)
Original Paper

Three genomes in the algal genus Volvox reveal the fate of a haploid sex-determining region after a transition to homothallism

Presenter : Yamamoto K., Hamaji T., Kawai-Toyooka H., Matsuzaki K., Takahashi F., Nishimura Y., Kawachi M., Noguchi H. , Minakuchi Y., Umeh J.G., Toyoda. A., Nozaki H.
Title : , Proceedings of the National Academy of Sciences, 118(21): (2021)
Original Paper

Rappemonads are haptophyte phytoplankton

Presenter : Kawachi M., Nakayama T., Kayama M., Nomura M., Miyashita H., Bojo O., Rhodes L., Sym, S., Pienaar R. N., Probert I., Inouye I., Kamikawa R.
Title : , Current Biology, 31(11):2395-2403 (2021)
Original Paper

Unstable Relationship Between Braarudosphaera bigelowii (= Chrysochromulina parkeae) and Its Nitrogen-Fixing Endosymbiont

Presenter : Suzuki S., Kawachi M., Tsukakoshi C., Nakamura A., Hagino K., Inouye I., Ishida K.
Title : , Frontiers in Plant Science, 12: (2021)
Original Paper

Genome sequencing of the NIES Cyanobacteria collection with a focus on the heterocyst-forming clade

Presenter : Hirose Y., Ohtsubo Y., Misawa N., Yonekawa C., Nagao N., Shimura Y., Fujisawa T., Kanesaki Y., Katoh H., Katayama M., Yamaguchi H., Yoshikawa H., Ikeuchi M., Eki T., Nakamura Y., Kawachi M.
Title : , DNA Research, 28(6):dsab024 (2021)
Original Paper

Genome sequencing of the multicellular alga Astrephomene provides insights into convergent evolution of germ-soma differentiation

Presenter : Yamashita S., Yamamoto K., Matsuzaki R., Suzuki S., Yamaguchi H., Hirooka S., Minakuchi Y., Miyagishima S., Kawachi M., Toyoda A., Nozaki H.
Title : , Scientific Reports, 11(22231): (2021)
Original Paper

Differential heavy metal sensitivity in seven algal species from the NIES culture collection based on delayed fluorescence assays

Presenter : Ota S., Yamaguchi H., Vanel F., Fuchida S., Koshikawa H., Yamagishi T., Yamamoto H., Kawachi M.
Title : , Phycological Research, 68(1):41-49 (2020)
Original Paper

Genomic characteristics of the toxic bloom-forming cyanobacterium Microcystis aeruginosa NIES-102

Presenter : Yamaguchi H., Suzuki S., Osana Y., Kawachi M.
Title : , Journal of Genomics, 8:1-6 (2020)
Original Paper

Draft genome sequences of four Microcystis aeruginosa strains (NIES-3787, NIES-3804, NIES-3806, and NIES-3807) isolated from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Microbiology Resource Announcements, 9(14):00052-20 (2020)
Original Paper

Sexual reproduction of the snow alga Chloromonas fukushimae (Volvocales, Chlorophyceae) induced using cultured materials

Presenter : Matsuzaki R., Kawachi M., Nozaki H., Nohara S., Suzuki I.
Title : , PLoS One, 15(8): (2020)
Original Paper

The Trait Repertoire Enabling Cyanobacteria to Bloom Assessed through Comparative Genomic Complexity and Metatranscriptomics

Presenter : Cao H., Shimura Y., Steffen M.M., Yang Z. , Lu J., Joel A. , Jenkins L. , Kawachi M., Yin Y. , Garcia-Pichel F.
Title : , American Society for Microbiology, 11(3):1-14 (2020)
Original Paper

A new preferentially outcrossing monoicous species of Volvox sect. Volvox (Chlorophyta) from Thailand

Presenter : Nozaki H., Mahakham W., Heman , Matsuzaki R., Kawachi M.
Title : , PloS one, 15(7): (2020)
Original Paper

Comparative genome analysis of test algal strain NIVA-CHL1 (Raphidocelis subcapitata) maintained in microalgal culture collections worldwide

Presenter : Yamagishi T., Yamaguchi H., Suzuki S., Yoshikawa M. , Jameson I., Lorenz M., Nobles D.R., Campbell C., Seki M., Kawachi M., Yamamoto H.
Title : , PLOS ONE, 15(11):e0241889 (2020)
Original Paper

A New Dinoflagellate Genome Illuminates a Conserved Gene Cluster Involved in Sunscreen Biosynthesis

Presenter : Shoguchi E., Beedessee G., Hisata K., Tada I., Narisoko H., Satoh N., Kawachi M., Shinzato C.
Title : , Genome Biology and Evolution, 13(2):1-7 (2020)
Original Paper

Taxonomic re-examination of Chloromonas nivalis (Volvocales, Chlorophyceae) zygotes from Japan and description of C. muramotoi sp. nov.

Presenter : Matsuzaki R., Nozaki H., Takeuchi N., Hara Y., Kawachi M.
Title : , PLoS one, 14(1):e0210986 (2019)
Book

Metal Mobility from Hydrothermal Sulfides into Seawater During Deep Seafloor Mining Operations

Presenter : Fuchida S., Ishibashi J., Nozaki T., Matsushita Y., Kawachi M., Koshikawa H.
Title : , Environmental Issues of Deep-Sea Mining: Impacts, Consequences and Policy Perspectives (2019)
Original Paper

Taxonomic re-examination of two NIES strains of “Chlamydomonas” within the Reticulata group of the genus Chloromonas (Volvocales, Chlorophyceae)

Presenter : Makino T., Matsuzaki R., Suzuki S., Yamaguchi H., Kawachi M., Nozaki H.
Title : , Microbial Resources and Systematics, 35(1):13-23 (2019)
Original Paper

Short-Term changes in marine prokaryotic and eukaryotic microalgal communities exposed to the leachate of a seafloor hydrothermal sulfide

Presenter : Tsuboi S., Yamaguchi H., Fuchida S., Koshikawa H., Kawachi M.
Title : , Water, Air, & Soil Pollution, 230(8):175 (2019)
Original Paper

The Draft Genome of a Hydrogen-producing Cyanobacterium, Arthrospira platensis NIES-46

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Title : , Journal of Genomics, 7:56-59 (2019)
Original Paper

Depth-dependent transcriptomic response of diatoms during spring bloom in the western subarctic Pacific Ocean

Presenter : Suzuki S., Kataoka T., Watanabe T., Yamaguchi H., Kuwata A., Kawachi M.
Title : , Scientific Reports, 9(1):14559 (2019)
Original Paper

Morphological and molecular identification of the dioecious “African species Volvox rousseletii (Chlorophyceae) in the water column of a Japanese lake based on field-collected and cultured materials

Presenter : Kimbara R., Isaka N., Matsuzaki R., Kawai-Toyooka H., Kawachi M., Nozaki H.
Title : , PLOS ONE, 14(8):1-11 (2019)
Original Paper

Identification of 13 Spirogyra species (Zygnemataceae) by traits of sexual reproduction induced under laboratory culture conditions

Presenter : Takano T., Higuchi S., Ikegaya H., Matsuzaki R., Kawachi M., Takahashi F., Nozaki H.
Title : , Scientific reports, 9(1):7458 (2019)
Original Paper

Chrysochromulina andersonii sp. nov. (Prymnesiophyceae), a new flagellate haptophyte symbiotic with radiolarians

Presenter : Yuasa T., Kawachi M., Horiguchi T., Takahashi O.
Title : , Phycologia, 58(2):211-224 (2019)
Original Paper

Morphology, reproduction and taxonomy of Volvox dissipatrix (Chlorophyceae) from Thailand, with a description of Volvox zeikusii sp. nov.

Presenter : Nozaki H., Takusagawa M., Misumi O., Mahakham W., Kawachi M.
Title : , Phycologia, 58(2):192-199 (2019)
Other Publications

Draft Genome Sequences of Three Filamentous Cyanobacterial Strains, Dolichospermum planctonicum NIES-80, Planktothrix agardhii NIES-905, and Sphaerospermopsis reniformis NIES-1949

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Title : , Microbiology Resource Announcements, 8(43):e00605-19 (2019)
Original Paper

A novel salt-tolerant genotype illuminates the sucrose gene evolution in freshwater bloom-forming cyanobacterium Microcystis aeruginosa

Presenter : Tanabe Y., Yamaguchi H., Sano T., Kawachi M.
Title : , FEMS Microbiology Letters, 366(15):fnz190 (2019)
Original Paper

Taming chlorophylls by early eukaryotes underpinned algal interactions and the diversification of the eukaryotes on the oxygenated Earth

Presenter : Kashiyama Y., Yokoyama A., Shiratori T., Hess S., Not F., Bachy C., Gutierrez-Rodriguez, Kawahara J., Suzaki T., Nakazawa M., Ishikawa T., Maruyama M., Wang M., Chen M. , Gong Y., Seto K., Kagami M., Hamamoto Y., Honda D., Umetani T., Shihongi A., Kayama M., Matsuda T., Taira J., Yabuki A., Tsuchiya M., Hirakawa Y., Kawachichi A., Nomura M., Nakamura A., Namba N., Matsumoto M. , Tanaka T., Yoshino T., Higuchi R., Yamamoto A., Maruyama T., Yamaguchi A., Uzuka A., Miyagishima S., Tanifuji G., Kawachi M., Kinoshita Y., Tamiaki H.
Title : , The ISME Journal, (13):1899-1910 (2019)
Original Paper

Photobiont diversity within populations of a vegetatively reproducing lichen, Parmotrema tinctorum, can be generated by photobiont switching

Presenter : Ohmura Y., Takeshita S., Kawachi M.
Title : , Symbiosis, 77(1):59-72 (2019)
Book

Ecotoxicological Bioassay Using Marine Algae for Deep-Sea Mining

Presenter : Yamagishi T., Ota S., Yamaguchi H., Koshikawa H., Tatarazako, N., Yamamoto H., Kawachi M.
Title : , Environmental Issues of Deep-Sea Mining: Impacts, Consequences and Policy Perspectives (2019)
Original Paper

Morphology, phylogeny, and taxonomy of two species of colonial volvocine green algae from Lake Victoria, Tanzania

Presenter : Nozaki H., Matsuzaki R., Kashindye B.B., Ezekiel C.N., Shaban S., Kawachi M., Aibara M., Nikaido M.
Title : , PLoS One, 14(11):e0224269 (2019)
Original Paper

Improved draft genome sequence of Microcystis aeruginosa NIES-298, a microcystin-producing cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Genome Announcements, 6:e01551-17 (2018)
Original Paper

Draft Genome Sequence of Microcystis aeruginosa NIES-87, a Bloom-Forming Cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Genome Announcements, 6:e01596-17 (2018)
Original Paper

Complete genome sequence of Microcystis aeruginosa NIES-2481 and common genomic features of group G M. aeruginosa

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Journal of Genomics., 6:30-33 (2018)
Original Paper

Morphology, taxonomy and mating-type loci in natural populations of Volvox carteri in Taiwan

Presenter : Nozaki H., Ueki N., Takusagawa M., Yamashita S., Misumi O., Matsuzaki R., Kawachi M., Chiang Y.R., Wu J.T.
Title : , Botanical studies, 59(1):1-8 (2018)
Other Publications

Mitochondrial and chloroplast genome sequences of Ulva ohno, a green-tide-forming macroalga in the Southern coastal regions of Japan

Presenter : Suzuki S., Yamaguchi H., Hiraoka M., Kawachi M.
Title : , Mitochondrial DNA Part B, 3(2):765-767 (2018)
Original Paper

Taxonomic revision of Chloromonas nivalis (Volvocales, Chlorophyceae) strains, with the new description of two snow-inhabiting Chloromonas species

Presenter : Matsuzaki R., Nozaki H., Kawachi M.
Title : , PLOS ONE, 13(3):e0193603 (2018)
Original Paper

Raphidocelis subcapitata (=Pseudokirchneriella subcapitata) provides an insight into genome evolution and environmental adaptations in the Sphaeropleales

Presenter : Suzuki S., Yamaguchi H., Nakajima N., Kawachi M.
Title : , Scientific Reports, 8(1):8058 (2018)
Original Paper

Onboard experiment investigating metal leaching of fresh hydrothermal sulfide cores into seawater

Presenter : Fuchida S., Ishibashi J., Shimada K., Nozaki T., Kumagai H., Kawachi M., Matsushita Y., Koshikawa H.
Title : , Geochemical Transaction, 19(15): (2018)
Original Paper

Two divergent Symbiodinium genomes reveal conservation of a gene cluster for sunscreen biosynthesis and recently lost genes

Presenter : Shoguchi E., Beedessee G., Tada I., Hisata K., Kawashima T. , Takeuchi T., Arakaki N. , Fujie M., Koyanagi R., Roy M.C., Kawachi M., Hidaka M., Satoh N., Shinzato C.
Title : , BMC genomics, 19(1):1-11 (2018)
Original Paper

Photobiont diversity within populations of a vegetatively reproducing lichen, Parmotrema tinctorum, can be generated by photobiont switching

Presenter : Ohmura Y., Takeshita S., Kawachi M.
Title : , Symbiosis (2018)
Other Publications

Evaluation of the toxicity of leaches from hydrothermal sulfide deposits by means of a delayed fluorescence-based bioassay with the marine cyanobacterium Cyanobium sp. NIES-981

Presenter : Yamagishi T., Fuchida S., Katsumata M, Horie Y, Mori F., Kawachi M., Koshikawa H., Nozaki T., Kumagai H., Ishibasi J., Tatarazako N
Title : , Ecotoxycology (2018)
Original Paper

Identification and detection sensitivity of Microcystis aeruginosa from mixed and field samples using MALDI-TOF MS

Presenter : Sun L.-W., Jiang W.-J., Zhang J.-Y., Wang W.-Q., Du Y., Sato H., Kawachi M., Yu R.
Title : , Environmental Monitoring and Assessment, 190(12):712 (2018)
Original Paper

Seasonal and geographical distribution of near-surface small photosynthetic eukaryotes in the western North Pacific determined by pyrosequencing of 18S rDNA

Presenter : Kataoka T., Yamaguchi H., Sato M., Watanabe T., Taniuchi Y., Kuwata A., Kawachi M.
Title : , FEMS Microbiology Ecology, 93:fiw229 (2017)
Original Paper

Leaching of metals and metalloids from hydrothermal ore particulates and their effects on marine phytoplankton

Presenter : Fuchida S., Yokoyama A., Fukuchi R., Ishibashi J., Kawagucci S., Kawachi M., Koshikawa H.
Title : , ACS Omega, 2(7):3175-3182 (2017)
Original Paper

Complete genome sequence of a coastal cyanobacterium, Synechococcus sp. strain NIES-970

Presenter : Shimura Y., Hirose Y. , Misawa N., Wakazuki S., Fujisawa T., Nakamura Y., Kanesaki Y., Yamaguchi H., Kawachi M.
Title : , Genome Announcements, 5(14):e00139-17 (2017)
Original Paper

Fatty acid composition profiles of 235 strains of three microalgal divisions within the NIES Microbial Culture Collection

Presenter : Mitani E., Nakayama F., Matsuwaki I., Ichi I., Kawabata A., Kawachi M., Kato M.
Title : , Microbial Resources and Systematics, 33(1):19-29 (2017)
Original Paper

Predators regulate prey species sorting and spatial distribution in microbial landscapes

Presenter : Livingston G., Fukumori K., Provete B.D., Kawachi M., Takamura N., Leibold A.M.
Title : , Journal of Animal Ecology, 86(3):501-510 (2017)
Original Paper

Rediscovery of the species of ancestral Volvox : morphology and phylogenetic position of Pleodorina sphaerica (Volvocales, Chlorophyceae) from Thailand

Presenter : Nozaki H., Mahakham W., Yamamoto K., Takusagawa M., Misumi O., Herron D.M., Rosenzweig F., Kawachi M.
Title : , Phycologia, 56(4):469-475 (2017)
Original Paper

Application of cryopreservation to genetic analyses of a photosynthetic picoeukaryote community

Presenter : Kawachi M., Kataoka T., Sato M., Noel Kawachi M., Kuwata A., Demura M., Yamaguchi H.
Title : , Gene, 576(2):708-716 (2016)
Original Paper

Complete Genome Sequence of Cyanobacterium Leptolyngbya sp. NIES-3755

Presenter : Hirose Y., Fujisawa T., Ohtsubo Y., Katayama M., Misawa N., Wakazuki S., Shimura Y., Nakamura Y., Kawachi M., Yoshikawa H., Eki T. , Kanesaki Y.
Title : , Genome Announcements, 4(2):e00090-16 (2016)
Original Paper

Rapid ecotoxicological bioassay using delayed fluorescence in the marine cyanobacterium Cyanobium sp.(NIES-981)

Presenter : Yamagishi T., Katsumata M, Yamaguchi H., Shimura Y., Kawachi M., Koshikawa H., Horie Y., Tatarazako N.
Title : , Ecotoxicology, 25(10):1751-1758 (2016)
Original Paper

Unique chlorophylls in picoplankton Prochlorococcus sp.“Physicochemical properties of divinyl chlorophylls, and the discovery of monovinyl chlorophyll b as well as divinyl chlorophyll b in the species Prochlorococcus NIES-2086”

Presenter : Komatsu H., Wada K., Kanjoh T., Miyashita H., Sato M., Kawachi M., Kobayashi M.
Title : , Photosynthesis Research, 130(1):445-467 (2016)
Original Paper

Rapid Classification and Identification of Microcystis aeruginosa Strains Using MALDI–TOF MS and Polygenetic Analysis

Presenter : Sun L.W., Jiang W.J., Sato H., Kawachi M., Lu X.W.
Title : , PloS one, 11(5):e0156275 (2016)
Original Paper

Complete genome sequence of cyanobacterium Nostoc sp. NIES-3756, a potentially useful strain for phytochrome-based bioengineering

Presenter : Hirose Y., Fujisawa T., Ohtsubo Y., Katayama M., Misawa N., Wakazuki S., Shimura Y., Nakamura Y., Kawachi M., Yoshikawa H. , Eki T., Kanesaki Y.
Title : , Journal of Biotechnology, 218(20):51-52 (2016)
Original Paper

Complete genome sequence of cyanobacterium Fischerella sp. NIES-3754, providing thermoresistant optogenetic tools

Presenter : Hirose Y., Fujisawa T., Ohtsubo Y., Katayama M., Misawa N., Wakazuki S., Shimura Y., Nakamura Y., Kawachi M., Yoshikawa H. , Eki T., Kanesaki Y.
Title : , Journal of Biotechnology, 220(20):45-46 (2016)
Original Paper

Mother Cell Wall Cleavage during Filament Formation in Stichococcus bacillaris (Trebouxiophyceae, Chlorophyta)

Presenter : Yamamoto M., Handa S., Kawachi M., Miyamura S., Nagumo T., Hirata A., Kawano S.
Title : , Cytologia, 81(1):35-39 (2016)
Original Paper

Draft genome sequence of Microcystis aeruginosa NIES-98, a non-microcystin-producing cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Sano T., Tanabe Y., Nakajima N., Kawachi M.
Title : , Genome Announcements, 4(6):e01187-16 (2016)
Original Paper

Complete genome sequence of Cyanobium sp. NIES-981, a marine strain potentially useful for ecotoxicological bioassays

Presenter : Yamaguchi H., Shimura Y., SUZUKI S, Yamagishi T., Tatarazako N., Kawachi M.
Title : , Genome Announcements, 4(4):e00736-16 (2016)
Original Paper

Assessing depth-integrated phytoplankton biomass in the East China Sea using a unique empirical protocol to estimate euphotic depth

Presenter : Koshikawa H., Higashi H., Hasegawa T., Nishiuch K., Sasaki H., Kawachi M., Kiyomoto Y., Takayanagi K., Kohata K., Murakami S.
Title : , Estuarine, Coastal and Shelf Science, 153:74-85 (2015)
Original Paper

Plastid Genome-Based Phylogeny Pinpointed the Origin of the Green-Colored Plastid in the Dinoflagellate Lepidodinium chlorophorum

Presenter : Kamikawa R., Tanifuj G., Kawachi M., Miyashita H. , Hashimoto T., Inagaki Y.
Title : , Genome biology and evolution, 7(4):1133-1140 (2015)
Original Paper

Complete genome sequence of Microcystis aeruginosa NIES-2549, a bloom-forming cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Tanabe Y., Osana Y., Shimura Y., Ishida K., Kawachi M.
Title : , Genome Announcements, 3(3):e00551-15 (2015)
Original Paper

Delineating a New Heterothallic Species ofVolvox (Volvocaceae, Chlorophyceae) Using New Strains of Volvox africanus

Presenter : Nozaki H., Matsuzaki R., Yamamoto K., Kawachi M., Takahashi F.
Title : , PloS one, 10(11):e0142632 (2015)
Original Paper

Comparison of the terrestrial cyanobacterium Leptolyngbya sp. NIES-2104 and the freshwater Leptolyngbya boryana PCC 6306 genomes

Presenter : Shimura Y., Hirose Y., Misawa N., Osana Y., Katoh H., Yamaguchi H., Kawachi M.
Title : , DNA Research, 22(6):403-412 (2015)
Original Paper

Molecular diversity of endosymbiotic Nephroselmis (Nephroselmidophyceae) in Hatena arenicola (Katablepharidophycota)

Presenter : Yamaguchi H., Nakayama T., Hongoh Y., Kawachi M., Inouye I.
Title : , Journal of Plant Research, 127(2):241-247 (2014)
Original Paper

Iron and glucose effects on the morphology of Botryococcus braunii with assumption on the colony formation variability

Presenter : Tanoi T., Kawachi M., Watanabe M.
Title : , Journal of Applied Phycology, 26(1):1-8 (2014)
Other Publications

Draft Genome Sequence of the Toxic Bloom-Forming Cyanobacterium Aphanizomenon flos-aquae NIES-81

Presenter : Cao H, Shimura Y., Kawachi M., Yin Y.
Title : , Genome Announcements, 2(1):e00044-14 (2014)
Original Paper

Changes in Microbial Communities, Including both Uncultured and Culturable Bacteria, with Mid-Ocean Ballast-Water Exchange during a Voyage from Japan to Australia

Presenter : Tomaru A., Kawachi M., Demura M., Fukuyo Y.
Title : , PLOS ONE, 9(5):e96274 (2014)
Original Paper

Genetic structure of Japanese Chattonella marina (Raphidophyceae) populations revealed using microsatellite markers

Presenter : Demura M., Nakayama T., Kasai F., Kawachi M.
Title : , Phycological Research, 62(2):102-108 (2014)
Review

Microbial Culture Collection at the National Institute for Environmental Studies, Tsukuba, Japan

Presenter : Kawachi M., Mary-Helene N.
Title : , PICES Press, 22(2):43-45 (2014)
Original Paper

Desiccation tolerance of Botryococcus braunii (Trebouxiophyceae, Chlorophyta) and extreme temperature tolerance of dehydrated cells

Presenter : Demura M., Ioki M., Kawachi M., Nakajima N., Watanabe M.
Title : , Journal of Applied Phycology (2013)
Original Paper

Taxonomic re-examination of Chlamydomonas strains maintained in the NIES-Collection

Presenter : Yumoto K., Kasai F., Kawachi M.
Title : , Microbiology and Culture Collections, 29(1):1-12 (2013)
Original Paper

Discovery of an Endosymbiotic Nitrogen-Fixing Cyanobacterium UCYN-A in Braarudosphaera bigelowii (Prymnesiophyceae)

Presenter : Hagino K., Onuma, Kawachi M., Horiguchi
Title : , PLOS ONE, 8(12):1-11 (2013)
Original Paper

Changes in the hydrocarbon-synthesizing activity during growth of Botryococcus braunii B70

Presenter : Rika Niitsu, Mana Kanazashi, Izumi Matsuwaki, Yukiko Ikegami, Tanoi T., Kawachi M., Makoto Watanabe, Misako Kato
Title : , Bioresource Technology, 109:297-299 (2012)
Original Paper

Evidence of the existence of a toxic form of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) in Japan

Presenter : Saghar Z. , Kawachi M., Sano T., Watanabe M.M.
Title : , Phycological Research, 60(2):98-104 (2012)
Original Paper

Succession of genetic diversity of Botryococcus braunii (Trebouxiophyceae) in two Japanese reservoirs

Presenter : Demura M., Kawachi M., Koshikawa H., Nakayama T., Mayuzumi Y., Watanabe M.M.
Title : , Procedia Environmental Sciences, 15:3-11 (2012)
Original Paper

Application of rotating cylinder method for ecotoxicological evaluation of antifouling paints

Presenter : Okamura H., Yagi M., Kawachi M., Hanyuda T., Kawai H., Walker I.
Title : , Toxicological & Environmental Chemistry, 94(3):545-556 (2012)
Original Paper

Relationship between hydrocarbons and molecular phylogeny of Botryococcus braunii

Presenter : Kawachi M., Tanoi T., Demura M., Kaya K., Watanabe M.
Title : , Algal Research, 1(2):114-119 (2012)
Original Paper

Prasinoxanthin is absent in the green-colored dinoflagellate Lepidodinium chlorophorum strain NIES-1868: pigment composition and 18S rRNA phylogeny

Presenter : Matsumoto T., Kawachi M., Miyashita H., Inagaki Y.
Title : , Journal of plant research, 125:705-711 (2012)
Original Paper

Life cycle of Chattonella marina (Raphidophyceae) inferred from analysis of microsatellite marker genotypes

Presenter : Demura M., Mary-helene N., Kasai F., Watanabe M., Kawachi M.
Title : , Phycological Research, 60(4):316-325 (2012)
Original Paper

Structural Confirmation of a Unique Carotenoid Lactoside, P457, in Symbiodinium sp. Strain nbrc 104787 Isolated from a Sea Anemone and its Distribution in Dinoflagellates and Various Marine Organisms

Presenter : Wakahama T., Laza-Martı´nez A., Taha A. , Okuyama H., Yoshida K., Kogame K., Awai K., Kawachi M., Maoka T. , Takaichi S.
Title : , Journal of Phycology, 48(6):1392-1402 (2012)
Original Paper

Effects of carbon source on growth and morphology of Botryococcus braunii

Presenter : Tanoi T., Kawachi M., Watanabe M
Title : , Journal of Applied Phycology , 23(1):25-33 (2011)
Original Paper

Whole-genome amplification(WGA)of marine photosynthetic eukaryote populations

Presenter : Cecile Lepere, Demura M., Kawachi M., Sarah Romac, Ian Probert
Title : , Federation of European Microbiological Societies, 76:513-523 (2011)
Original Paper

Green-colored Plastids in the Dinoflagellate Genus Lepidodinium are of Core Chlorophyte Origin

Presenter : Matsumoto T., Shinozaki F., Chikuni T., Yabuki A., Takishita K., Kawachi M., Nakayama T., Inouye I., Hashimoto T., Inagaki Y.
Title : , Protist, 162(2):268-276 (2011)
Original Paper

Denaturing gradient gel electrophoresis shows that bacterial communities change with mid-ocean ballast water exchange

Presenter : Tomaru A., Kawachi M., Demura M., Fukuyo Y.
Title : , Mar.Pollut.Bull., 60(2):299-302 (2010)
Original Paper

Taxonomic reexamination of Chara flobularis(Charales, Charophyceae) from Japan based on oospore morphology and rbcL gene sequences, and the descriotion of C.leptospora sp.nov.

Presenter : Sakayama H., Kasai F., Nozaki H., Watanabe M. M., Kawachi M., Shigyo M. , Nishihiro M., Washitani I., Krienitz L., Ito M.
Title : , J.Phycol., 45(4):917-927 (2009)
Original Paper

Endangered algal species and how to protect them

Presenter : Brodie J, Andersen R.A., Kawachi M., Millar A.J.K.
Title : , Phycologia, 48(5):423-438 (2009)
Original Paper

Taxonomic revision of Chattonella antiqua, C. marina and C. ovata (Raphidophyceae) based on their morphological characteristics and genetic diversity

Presenter : Demura M., Mary-helene N., Kasai F., Watanabe M.M., Kawachi M.
Title : , Phycologia, 48(6):518-535 (2009)
Original Paper

Origins of plastids and glyceraldehyde-3-phosphate dehydrogenase genes in the green-colored dinoflagellate Lepidodinium chlorophorum

Presenter : Takishita K., Kawachi M., Mary-helene N., Matsumoto T., Kakizoe N., Watanabe M.M., Inouye I.., Ishida K.-I., Hashimoto T., Inagaki Y.
Title : , Gene, 410(1):26-36 (2008)
Seasonality of gametophyte occurrence,maturation and fertilization of the freshwater red alga Thorea okadae(Thoreales,Rhodophyta) in the Kikuchi River,Japan

Presenter : , , KAWACHI Masanobu
Title : , Phycologia, 46:160-167 (2007)
Effect of the water-soluble fraction of diesel oil on bacterial and primary production and the trophic transfer to mesozooplankton through a microbial food web in Yangtze estuary,China

Presenter : KAWACHI Masanobu, , , MAKI Hideaki, KOSHIKAWA Hiroshi
Title : , Estuar.,Coast.Shelf Sci., 71:68-80 (2007)
Genetic combinations of symbionts in a vegetatively reproducing lichen,Parmotrema tinctorum,based on ITS rDNA sequences

Presenter : , KAWACHI Masanobu
Title : , Bryologist, 109(1):43-59 (2006)
Original Paper

Ultrastructural evidences of growth inhibitory effects of a novel biocide, Akacid rplus, on an aflatoxigenic Aspergillus parasiticus

Presenter : Razzaghi-Abyaneh M., Shams-Ghahfarokhi M., Kawachi M., Eslamifar A., Schmidt O., Schmidt A., Allameh A., Yoshinari T.
Title : , Toxicon, 48(8):1075-1082 (2006)
Morphology,genetic diversity,temperature tolerance and toxicity of Cylindrospermopsis raciborskii(Nostocales,Cyanobacteria)strains from Thailand and Japan

Presenter : , KAWACHI Masanobu
Title : , FEMS Ecol., 48:345-355 (2004)
Original Paper

Induced dimorphic life cycle of a coccolithophorid, Calyptrosphaera sphaeroidea (Prymnesiophyceae, Haptophyta)

Presenter : Noel, M.-H., Kawachi M., Inouye I.
Title : , J.Phycol., 40(1):112-129 (2004)
New records of rare species of three bivalves and one crab from the estuary of the Tagori River,Saga Prefecture,Ariake Inland Sea,Japan

Presenter : Koga T., Satake K., Yabe T., Nohara S., Ueno R., Utagawa H., Hiroki M., Kawachi M., Watanabe M.M.
Title : , Yuriyagai, 9(2):43-50 (2003)
Original Paper

Re-examination of the marine"chrysophyte"Polypodochrysis teissieri (Pinguiophyceae)

Presenter : Kawachi M., Noel, M.-H., Andersen R.A.
Title : , Phycol.Res., 50(1):91-100 (2002)
Intracellular localization of a carbonic anhydrase in Porphyridium purpureum(Porphyridiales,Rhodophyta)

Presenter : Mitsuhashi S.(*1), Kawachi M., Kurano N.(*1), Miyachi S.(*1)
Title : , Phycologia, 40(4):319-323 (2001)
Molecular phylogeny of the haptophyta based on the rbcL gene and sequence variation on the spacer region of the rubisco operon

Presenter : Fujiwara S.(*1), Tsuzuki M.(*1), Kawachi M., Minaka N.(*2), Inouye I.(*3)
Title : , J.Phycol., 37(1):121-129 (2001)
Taxonomy and the phylogenetic position of a new prasinophycean alga,Crustomastix didyma gen.& sp.nov.(Chlorophyta)

Presenter : KAWACHI Masanobu, NAKAYAMA Tadanobu
Title : , Phycologia, 39(4):337‐348 (2000)
Ultrastructure of Calyptrosphaera radiata,sp.nov.(Prymnesiophyceae,Haptophyta)

Presenter : KAWACHI Masanobu
Title : , Eur.J.Phycol., 35:283‐293 (2000)
Diversity of swimming behavior in Pyramimonas(Prasinophyceae)

Presenter : KAWACHI Masanobu
Title : , Phycol.Res., 48(3):149‐154 (2000)

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Description of four new species of Mychonastes (Chlorophyceae) from Japanese freshwater habitats based on molecular and morphological data

Presenter : Nozaki H., Matsuzaki R., Mori F., Sato M., Yamaguchi H., Higashiyama T., Kawachi M., Tanabe Y.
Title : , Phycological Research, 73:35-48 (2025)
Establishment of cryopreserved culture strains of Volvox (Chlorophyceae)

Presenter : Nozaki H., Mori F., Tanaka Y., Matsuzaki R., Yamaguchi H., Kawachi M., Tanabe Y.
Title : , Phycologia, 64(5):389-393 (2025)
Taxonomic identification of an Australian strain of Volvox amboensis (Chlorophyceae)

Presenter : Nozaki H., Matsuzaki R., Ishida T., Ueki N., Kawachi M., Tanabe Y.
Title : , Microbial Resources and Systematics, 41(2):57-64 (2025)
Two species of the green algae Volvox sect. Volvox from the Japanese ancient lake, Lake Biwa

Presenter : Nozaki H., Matsuzaki R., Shimotori K., Ueki N., Wirawan H., Wuttipong M., Yamaguchi H., Tanabe Y., Kawachi M.
Title : , PLOS One, 19(9): (2024)
Cryopreservation of two species of the multicellular volvocine green algal genus Astrephomene

Presenter : Nozaki H., Mori F., Tanaka Y., Matsuzaki R., Yamashita S., Yamaguchi H., Kawachi M.
Title : , BMC Microbiology, 23(16): (2023)
Genomic analysis of an ultrasmall freshwater green alga, Medakamo hakoo

Presenter : Kato S., Misumi O., Maruyama S., Nozaki H., Tsujimoto-Inui Y., Takusagawa M., Suzuki S., Kuwata K., Noda S., Ito N., Okabe Y., Sakamoto T., Yagisawa F., Matsunaga T.M., Matsubayashi Y., Yamaguchi H., Kawachi M., Kuroiwa H.
Title : , communications biology, 6(1): (2023)
Cryopreservation of eight genera of the multicellular volvocine green algae

Presenter : Mori F., Tanaka Y., Matsuzaki R., Nozaki H., Yamaguchi H., Kawachi M.
Title : , Microbial Resources and Systematics, 39(2):77-87 (2023)
Propidium iodide staining and flow cytometry-based assessment of heavy metal impact on marine phytoplankton

Presenter : Ota S., Fuchida S., Yamaguchi H., Yamagishi T., Yamamoto H., Koshikawa H., Kawachi M.
Title : , Cytologia, 87(2):177-187 (2022)
Cryopreservation of vegetative cells and zygotes of the multicellular volvocine green alga Gonium pectorale

Presenter : Nozaki H., Mori F., Tanaka Y., Matsuzaki R., Yamaguchi H., Kawachi M.
Title : , BMC Microbiology, 22(103): (2022)
The early acquisition of symbiotic algae benefits larval survival and juvenile growth in the coral Acropora tenuis

Presenter : Hazraty-Kari S., Morita M., Kawachi M., Harii S.
Title : , Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, 337(5):559-565 (2022)
Potential genetic diversity of Synechococcus-related strains maintained in the Microbial Culture Collection of the National Institute for Environmental Studies, Japan

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Title : , Microbial Resources and Systematics, 38(2):63-74 (2022)
Morphology, mating system and taxonomy of Volvox africanus (Volvocaceae, Chlorophyceae) from Thailand

Presenter : Nozaki H., Mahakham W., Heman W., Matsuzaki R., Kawachi M.
Title : , Botanical Studies, 63(1): (2022)
Rapid transcriptomic and physiological changes in the freshwater pennate diatom Mayamaea pseudoterrestris in response to copper exposure

Presenter : Suzuki S., Ota S., Yamagishi T., Tuji A., Yamaguchi H., Kawachi M.
Title : , DNA Research, 29(6):1-12 (2022)
The Rubisco small subunits in the green algal genus Chloromonas provide insights into evolutionary loss of the eukaryotic carbon-concentrating organelle, the pyrenoid

Presenter : Matsuzaki R., Suzuki S., Yamaguchi H., Kawachi M., Kanesaki Y., Yoshikawa H., Mori T., Nozaki H.
Title : , BMC Ecology and Evolution, 21:11 (2021)
Complete sequence and structure of the genome of the harmful algal bloom-forming cyanobacterium Planktothrix agardhii NIES-204T and detailed analysis of secondary metabolite gene clusters

Presenter : Shimura Y., Fujisawa T., Hirose Y., Misawa N., Kanesaki Y., Nakamura Y., Kawachi M.
Title : , Harmful Algae, 101: (2021)
Development of a time-series shotgun metagenomics database for monitoring microbial communities at the Pacific coast of Japan

Presenter : Yoshitake K., Kimura G., Sakami T., Watanabe T., Taniuchi Y., Kakehi S., Kuwata A., Yamaguchi H., Kataoka T. , Kawachi M., Ikeho K., Tan E., Igarashi Y., Ohtsubo M., Watanabe S., Suzuki Y. , Asakawa S., Ishino S., Tashiro K. , Ishino Y., Kobayashi T., Mineta K., Gojobori T.
Title : , Scientific Reports volume, 11:12222 (2021)
The enigmatic snow microorganism, Chionaster nivalis, is closely related to Bartheletia paradoxa (Agaricomycotina, Basidiomycota)

Presenter : Matsuzaki R., Takashima Y., Suzuki I., Kawachi M., Nozaki H., Nohara S., Degawa Y.
Title : , Microbes and Environments, 36(2): (2021)
Identification of a dual orange/far-red and blue light photoreceptor from an oceanic green picoplankton

Presenter : Makita Y., Suzuki S., Fushimi K., Shimada S., Suehisa A., Hirata M., Kuriyama T., Kurihara Y., Hamasaki H., Okubo-Kurihara E., Yoshitake K., Watanabe T., Sakuta M., Gojobori T., Sakami T., Narikawa R., Yamaguchi H., Kawachi M., Matsui M.
Title : , Nature Communications, 12(1):3593 (2021)
Kinetic investigation of galvanic dissolution of ZnS and PbS with FeS2 from hydrothermal sulfides in seawater

Presenter : Fuchida S., Kawachi M., Koshikawa H.
Title : , Applied Geochemistry, 129: (2021)
Three genomes in the algal genus Volvox reveal the fate of a haploid sex-determining region after a transition to homothallism

Presenter : Yamamoto K., Hamaji T., Kawai-Toyooka H., Matsuzaki K., Takahashi F., Nishimura Y., Kawachi M., Noguchi H. , Minakuchi Y., Umeh J.G., Toyoda. A., Nozaki H.
Title : , Proceedings of the National Academy of Sciences, 118(21): (2021)
Rappemonads are haptophyte phytoplankton

Presenter : Kawachi M., Nakayama T., Kayama M., Nomura M., Miyashita H., Bojo O., Rhodes L., Sym, S., Pienaar R. N., Probert I., Inouye I., Kamikawa R.
Title : , Current Biology, 31(11):2395-2403 (2021)
Unstable Relationship Between Braarudosphaera bigelowii (= Chrysochromulina parkeae) and Its Nitrogen-Fixing Endosymbiont

Presenter : Suzuki S., Kawachi M., Tsukakoshi C., Nakamura A., Hagino K., Inouye I., Ishida K.
Title : , Frontiers in Plant Science, 12: (2021)
Genome sequencing of the NIES Cyanobacteria collection with a focus on the heterocyst-forming clade

Presenter : Hirose Y., Ohtsubo Y., Misawa N., Yonekawa C., Nagao N., Shimura Y., Fujisawa T., Kanesaki Y., Katoh H., Katayama M., Yamaguchi H., Yoshikawa H., Ikeuchi M., Eki T., Nakamura Y., Kawachi M.
Title : , DNA Research, 28(6):dsab024 (2021)
Genome sequencing of the multicellular alga Astrephomene provides insights into convergent evolution of germ-soma differentiation

Presenter : Yamashita S., Yamamoto K., Matsuzaki R., Suzuki S., Yamaguchi H., Hirooka S., Minakuchi Y., Miyagishima S., Kawachi M., Toyoda A., Nozaki H.
Title : , Scientific Reports, 11(22231): (2021)
Differential heavy metal sensitivity in seven algal species from the NIES culture collection based on delayed fluorescence assays

Presenter : Ota S., Yamaguchi H., Vanel F., Fuchida S., Koshikawa H., Yamagishi T., Yamamoto H., Kawachi M.
Title : , Phycological Research, 68(1):41-49 (2020)
Genomic characteristics of the toxic bloom-forming cyanobacterium Microcystis aeruginosa NIES-102

Presenter : Yamaguchi H., Suzuki S., Osana Y., Kawachi M.
Title : , Journal of Genomics, 8:1-6 (2020)
Draft genome sequences of four Microcystis aeruginosa strains (NIES-3787, NIES-3804, NIES-3806, and NIES-3807) isolated from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Microbiology Resource Announcements, 9(14):00052-20 (2020)
Sexual reproduction of the snow alga Chloromonas fukushimae (Volvocales, Chlorophyceae) induced using cultured materials

Presenter : Matsuzaki R., Kawachi M., Nozaki H., Nohara S., Suzuki I.
Title : , PLoS One, 15(8): (2020)
The Trait Repertoire Enabling Cyanobacteria to Bloom Assessed through Comparative Genomic Complexity and Metatranscriptomics

Presenter : Cao H., Shimura Y., Steffen M.M., Yang Z. , Lu J., Joel A. , Jenkins L. , Kawachi M., Yin Y. , Garcia-Pichel F.
Title : , American Society for Microbiology, 11(3):1-14 (2020)
A new preferentially outcrossing monoicous species of Volvox sect. Volvox (Chlorophyta) from Thailand

Presenter : Nozaki H., Mahakham W., Heman , Matsuzaki R., Kawachi M.
Title : , PloS one, 15(7): (2020)
Comparative genome analysis of test algal strain NIVA-CHL1 (Raphidocelis subcapitata) maintained in microalgal culture collections worldwide

Presenter : Yamagishi T., Yamaguchi H., Suzuki S., Yoshikawa M. , Jameson I., Lorenz M., Nobles D.R., Campbell C., Seki M., Kawachi M., Yamamoto H.
Title : , PLOS ONE, 15(11):e0241889 (2020)
A New Dinoflagellate Genome Illuminates a Conserved Gene Cluster Involved in Sunscreen Biosynthesis

Presenter : Shoguchi E., Beedessee G., Hisata K., Tada I., Narisoko H., Satoh N., Kawachi M., Shinzato C.
Title : , Genome Biology and Evolution, 13(2):1-7 (2020)
Taxonomic re-examination of Chloromonas nivalis (Volvocales, Chlorophyceae) zygotes from Japan and description of C. muramotoi sp. nov.

Presenter : Matsuzaki R., Nozaki H., Takeuchi N., Hara Y., Kawachi M.
Title : , PLoS one, 14(1):e0210986 (2019)
Taxonomic re-examination of two NIES strains of “Chlamydomonas” within the Reticulata group of the genus Chloromonas (Volvocales, Chlorophyceae)

Presenter : Makino T., Matsuzaki R., Suzuki S., Yamaguchi H., Kawachi M., Nozaki H.
Title : , Microbial Resources and Systematics, 35(1):13-23 (2019)
Short-Term changes in marine prokaryotic and eukaryotic microalgal communities exposed to the leachate of a seafloor hydrothermal sulfide

Presenter : Tsuboi S., Yamaguchi H., Fuchida S., Koshikawa H., Kawachi M.
Title : , Water, Air, & Soil Pollution, 230(8):175 (2019)
The Draft Genome of a Hydrogen-producing Cyanobacterium, Arthrospira platensis NIES-46

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Title : , Journal of Genomics, 7:56-59 (2019)
Depth-dependent transcriptomic response of diatoms during spring bloom in the western subarctic Pacific Ocean

Presenter : Suzuki S., Kataoka T., Watanabe T., Yamaguchi H., Kuwata A., Kawachi M.
Title : , Scientific Reports, 9(1):14559 (2019)
Morphological and molecular identification of the dioecious “African species Volvox rousseletii (Chlorophyceae) in the water column of a Japanese lake based on field-collected and cultured materials

Presenter : Kimbara R., Isaka N., Matsuzaki R., Kawai-Toyooka H., Kawachi M., Nozaki H.
Title : , PLOS ONE, 14(8):1-11 (2019)
Identification of 13 Spirogyra species (Zygnemataceae) by traits of sexual reproduction induced under laboratory culture conditions

Presenter : Takano T., Higuchi S., Ikegaya H., Matsuzaki R., Kawachi M., Takahashi F., Nozaki H.
Title : , Scientific reports, 9(1):7458 (2019)
Chrysochromulina andersonii sp. nov. (Prymnesiophyceae), a new flagellate haptophyte symbiotic with radiolarians

Presenter : Yuasa T., Kawachi M., Horiguchi T., Takahashi O.
Title : , Phycologia, 58(2):211-224 (2019)
Morphology, reproduction and taxonomy of Volvox dissipatrix (Chlorophyceae) from Thailand, with a description of Volvox zeikusii sp. nov.

Presenter : Nozaki H., Takusagawa M., Misumi O., Mahakham W., Kawachi M.
Title : , Phycologia, 58(2):192-199 (2019)
A novel salt-tolerant genotype illuminates the sucrose gene evolution in freshwater bloom-forming cyanobacterium Microcystis aeruginosa

Presenter : Tanabe Y., Yamaguchi H., Sano T., Kawachi M.
Title : , FEMS Microbiology Letters, 366(15):fnz190 (2019)
Taming chlorophylls by early eukaryotes underpinned algal interactions and the diversification of the eukaryotes on the oxygenated Earth

Presenter : Kashiyama Y., Yokoyama A., Shiratori T., Hess S., Not F., Bachy C., Gutierrez-Rodriguez, Kawahara J., Suzaki T., Nakazawa M., Ishikawa T., Maruyama M., Wang M., Chen M. , Gong Y., Seto K., Kagami M., Hamamoto Y., Honda D., Umetani T., Shihongi A., Kayama M., Matsuda T., Taira J., Yabuki A., Tsuchiya M., Hirakawa Y., Kawachichi A., Nomura M., Nakamura A., Namba N., Matsumoto M. , Tanaka T., Yoshino T., Higuchi R., Yamamoto A., Maruyama T., Yamaguchi A., Uzuka A., Miyagishima S., Tanifuji G., Kawachi M., Kinoshita Y., Tamiaki H.
Title : , The ISME Journal, (13):1899-1910 (2019)
Photobiont diversity within populations of a vegetatively reproducing lichen, Parmotrema tinctorum, can be generated by photobiont switching

Presenter : Ohmura Y., Takeshita S., Kawachi M.
Title : , Symbiosis, 77(1):59-72 (2019)
Morphology, phylogeny, and taxonomy of two species of colonial volvocine green algae from Lake Victoria, Tanzania

Presenter : Nozaki H., Matsuzaki R., Kashindye B.B., Ezekiel C.N., Shaban S., Kawachi M., Aibara M., Nikaido M.
Title : , PLoS One, 14(11):e0224269 (2019)
Improved draft genome sequence of Microcystis aeruginosa NIES-298, a microcystin-producing cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Genome Announcements, 6:e01551-17 (2018)
Draft Genome Sequence of Microcystis aeruginosa NIES-87, a Bloom-Forming Cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Genome Announcements, 6:e01596-17 (2018)
Complete genome sequence of Microcystis aeruginosa NIES-2481 and common genomic features of group G M. aeruginosa

Presenter : Yamaguchi H., Suzuki S., Kawachi M.
Title : , Journal of Genomics., 6:30-33 (2018)
Morphology, taxonomy and mating-type loci in natural populations of Volvox carteri in Taiwan

Presenter : Nozaki H., Ueki N., Takusagawa M., Yamashita S., Misumi O., Matsuzaki R., Kawachi M., Chiang Y.R., Wu J.T.
Title : , Botanical studies, 59(1):1-8 (2018)
Taxonomic revision of Chloromonas nivalis (Volvocales, Chlorophyceae) strains, with the new description of two snow-inhabiting Chloromonas species

Presenter : Matsuzaki R., Nozaki H., Kawachi M.
Title : , PLOS ONE, 13(3):e0193603 (2018)
Raphidocelis subcapitata (=Pseudokirchneriella subcapitata) provides an insight into genome evolution and environmental adaptations in the Sphaeropleales

Presenter : Suzuki S., Yamaguchi H., Nakajima N., Kawachi M.
Title : , Scientific Reports, 8(1):8058 (2018)
Onboard experiment investigating metal leaching of fresh hydrothermal sulfide cores into seawater

Presenter : Fuchida S., Ishibashi J., Shimada K., Nozaki T., Kumagai H., Kawachi M., Matsushita Y., Koshikawa H.
Title : , Geochemical Transaction, 19(15): (2018)
Two divergent Symbiodinium genomes reveal conservation of a gene cluster for sunscreen biosynthesis and recently lost genes

Presenter : Shoguchi E., Beedessee G., Tada I., Hisata K., Kawashima T. , Takeuchi T., Arakaki N. , Fujie M., Koyanagi R., Roy M.C., Kawachi M., Hidaka M., Satoh N., Shinzato C.
Title : , BMC genomics, 19(1):1-11 (2018)
Photobiont diversity within populations of a vegetatively reproducing lichen, Parmotrema tinctorum, can be generated by photobiont switching

Presenter : Ohmura Y., Takeshita S., Kawachi M.
Title : , Symbiosis (2018)
Identification and detection sensitivity of Microcystis aeruginosa from mixed and field samples using MALDI-TOF MS

Presenter : Sun L.-W., Jiang W.-J., Zhang J.-Y., Wang W.-Q., Du Y., Sato H., Kawachi M., Yu R.
Title : , Environmental Monitoring and Assessment, 190(12):712 (2018)
Seasonal and geographical distribution of near-surface small photosynthetic eukaryotes in the western North Pacific determined by pyrosequencing of 18S rDNA

Presenter : Kataoka T., Yamaguchi H., Sato M., Watanabe T., Taniuchi Y., Kuwata A., Kawachi M.
Title : , FEMS Microbiology Ecology, 93:fiw229 (2017)
Leaching of metals and metalloids from hydrothermal ore particulates and their effects on marine phytoplankton

Presenter : Fuchida S., Yokoyama A., Fukuchi R., Ishibashi J., Kawagucci S., Kawachi M., Koshikawa H.
Title : , ACS Omega, 2(7):3175-3182 (2017)
Complete genome sequence of a coastal cyanobacterium, Synechococcus sp. strain NIES-970

Presenter : Shimura Y., Hirose Y. , Misawa N., Wakazuki S., Fujisawa T., Nakamura Y., Kanesaki Y., Yamaguchi H., Kawachi M.
Title : , Genome Announcements, 5(14):e00139-17 (2017)
Fatty acid composition profiles of 235 strains of three microalgal divisions within the NIES Microbial Culture Collection

Presenter : Mitani E., Nakayama F., Matsuwaki I., Ichi I., Kawabata A., Kawachi M., Kato M.
Title : , Microbial Resources and Systematics, 33(1):19-29 (2017)
Predators regulate prey species sorting and spatial distribution in microbial landscapes

Presenter : Livingston G., Fukumori K., Provete B.D., Kawachi M., Takamura N., Leibold A.M.
Title : , Journal of Animal Ecology, 86(3):501-510 (2017)
Rediscovery of the species of ancestral Volvox : morphology and phylogenetic position of Pleodorina sphaerica (Volvocales, Chlorophyceae) from Thailand

Presenter : Nozaki H., Mahakham W., Yamamoto K., Takusagawa M., Misumi O., Herron D.M., Rosenzweig F., Kawachi M.
Title : , Phycologia, 56(4):469-475 (2017)
Application of cryopreservation to genetic analyses of a photosynthetic picoeukaryote community

Presenter : Kawachi M., Kataoka T., Sato M., Noel Kawachi M., Kuwata A., Demura M., Yamaguchi H.
Title : , Gene, 576(2):708-716 (2016)
Complete Genome Sequence of Cyanobacterium Leptolyngbya sp. NIES-3755

Presenter : Hirose Y., Fujisawa T., Ohtsubo Y., Katayama M., Misawa N., Wakazuki S., Shimura Y., Nakamura Y., Kawachi M., Yoshikawa H., Eki T. , Kanesaki Y.
Title : , Genome Announcements, 4(2):e00090-16 (2016)
Rapid ecotoxicological bioassay using delayed fluorescence in the marine cyanobacterium Cyanobium sp.(NIES-981)

Presenter : Yamagishi T., Katsumata M, Yamaguchi H., Shimura Y., Kawachi M., Koshikawa H., Horie Y., Tatarazako N.
Title : , Ecotoxicology, 25(10):1751-1758 (2016)
Unique chlorophylls in picoplankton Prochlorococcus sp.“Physicochemical properties of divinyl chlorophylls, and the discovery of monovinyl chlorophyll b as well as divinyl chlorophyll b in the species Prochlorococcus NIES-2086”

Presenter : Komatsu H., Wada K., Kanjoh T., Miyashita H., Sato M., Kawachi M., Kobayashi M.
Title : , Photosynthesis Research, 130(1):445-467 (2016)
Rapid Classification and Identification of Microcystis aeruginosa Strains Using MALDI–TOF MS and Polygenetic Analysis

Presenter : Sun L.W., Jiang W.J., Sato H., Kawachi M., Lu X.W.
Title : , PloS one, 11(5):e0156275 (2016)
Complete genome sequence of cyanobacterium Nostoc sp. NIES-3756, a potentially useful strain for phytochrome-based bioengineering

Presenter : Hirose Y., Fujisawa T., Ohtsubo Y., Katayama M., Misawa N., Wakazuki S., Shimura Y., Nakamura Y., Kawachi M., Yoshikawa H. , Eki T., Kanesaki Y.
Title : , Journal of Biotechnology, 218(20):51-52 (2016)
Complete genome sequence of cyanobacterium Fischerella sp. NIES-3754, providing thermoresistant optogenetic tools

Presenter : Hirose Y., Fujisawa T., Ohtsubo Y., Katayama M., Misawa N., Wakazuki S., Shimura Y., Nakamura Y., Kawachi M., Yoshikawa H. , Eki T., Kanesaki Y.
Title : , Journal of Biotechnology, 220(20):45-46 (2016)
Mother Cell Wall Cleavage during Filament Formation in Stichococcus bacillaris (Trebouxiophyceae, Chlorophyta)

Presenter : Yamamoto M., Handa S., Kawachi M., Miyamura S., Nagumo T., Hirata A., Kawano S.
Title : , Cytologia, 81(1):35-39 (2016)
Draft genome sequence of Microcystis aeruginosa NIES-98, a non-microcystin-producing cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Sano T., Tanabe Y., Nakajima N., Kawachi M.
Title : , Genome Announcements, 4(6):e01187-16 (2016)
Complete genome sequence of Cyanobium sp. NIES-981, a marine strain potentially useful for ecotoxicological bioassays

Presenter : Yamaguchi H., Shimura Y., SUZUKI S, Yamagishi T., Tatarazako N., Kawachi M.
Title : , Genome Announcements, 4(4):e00736-16 (2016)
Assessing depth-integrated phytoplankton biomass in the East China Sea using a unique empirical protocol to estimate euphotic depth

Presenter : Koshikawa H., Higashi H., Hasegawa T., Nishiuch K., Sasaki H., Kawachi M., Kiyomoto Y., Takayanagi K., Kohata K., Murakami S.
Title : , Estuarine, Coastal and Shelf Science, 153:74-85 (2015)
Plastid Genome-Based Phylogeny Pinpointed the Origin of the Green-Colored Plastid in the Dinoflagellate Lepidodinium chlorophorum

Presenter : Kamikawa R., Tanifuj G., Kawachi M., Miyashita H. , Hashimoto T., Inagaki Y.
Title : , Genome biology and evolution, 7(4):1133-1140 (2015)
Complete genome sequence of Microcystis aeruginosa NIES-2549, a bloom-forming cyanobacterium from Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Suzuki S., Tanabe Y., Osana Y., Shimura Y., Ishida K., Kawachi M.
Title : , Genome Announcements, 3(3):e00551-15 (2015)
Delineating a New Heterothallic Species ofVolvox (Volvocaceae, Chlorophyceae) Using New Strains of Volvox africanus

Presenter : Nozaki H., Matsuzaki R., Yamamoto K., Kawachi M., Takahashi F.
Title : , PloS one, 10(11):e0142632 (2015)
Comparison of the terrestrial cyanobacterium Leptolyngbya sp. NIES-2104 and the freshwater Leptolyngbya boryana PCC 6306 genomes

Presenter : Shimura Y., Hirose Y., Misawa N., Osana Y., Katoh H., Yamaguchi H., Kawachi M.
Title : , DNA Research, 22(6):403-412 (2015)
Molecular diversity of endosymbiotic Nephroselmis (Nephroselmidophyceae) in Hatena arenicola (Katablepharidophycota)

Presenter : Yamaguchi H., Nakayama T., Hongoh Y., Kawachi M., Inouye I.
Title : , Journal of Plant Research, 127(2):241-247 (2014)
Iron and glucose effects on the morphology of Botryococcus braunii with assumption on the colony formation variability

Presenter : Tanoi T., Kawachi M., Watanabe M.
Title : , Journal of Applied Phycology, 26(1):1-8 (2014)
Changes in Microbial Communities, Including both Uncultured and Culturable Bacteria, with Mid-Ocean Ballast-Water Exchange during a Voyage from Japan to Australia

Presenter : Tomaru A., Kawachi M., Demura M., Fukuyo Y.
Title : , PLOS ONE, 9(5):e96274 (2014)
Genetic structure of Japanese Chattonella marina (Raphidophyceae) populations revealed using microsatellite markers

Presenter : Demura M., Nakayama T., Kasai F., Kawachi M.
Title : , Phycological Research, 62(2):102-108 (2014)
Desiccation tolerance of Botryococcus braunii (Trebouxiophyceae, Chlorophyta) and extreme temperature tolerance of dehydrated cells

Presenter : Demura M., Ioki M., Kawachi M., Nakajima N., Watanabe M.
Title : , Journal of Applied Phycology (2013)
Taxonomic re-examination of Chlamydomonas strains maintained in the NIES-Collection

Presenter : Yumoto K., Kasai F., Kawachi M.
Title : , Microbiology and Culture Collections, 29(1):1-12 (2013)
Discovery of an Endosymbiotic Nitrogen-Fixing Cyanobacterium UCYN-A in Braarudosphaera bigelowii (Prymnesiophyceae)

Presenter : Hagino K., Onuma, Kawachi M., Horiguchi
Title : , PLOS ONE, 8(12):1-11 (2013)
Changes in the hydrocarbon-synthesizing activity during growth of Botryococcus braunii B70

Presenter : Rika Niitsu, Mana Kanazashi, Izumi Matsuwaki, Yukiko Ikegami, Tanoi T., Kawachi M., Makoto Watanabe, Misako Kato
Title : , Bioresource Technology, 109:297-299 (2012)
Evidence of the existence of a toxic form of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) in Japan

Presenter : Saghar Z. , Kawachi M., Sano T., Watanabe M.M.
Title : , Phycological Research, 60(2):98-104 (2012)
Succession of genetic diversity of Botryococcus braunii (Trebouxiophyceae) in two Japanese reservoirs

Presenter : Demura M., Kawachi M., Koshikawa H., Nakayama T., Mayuzumi Y., Watanabe M.M.
Title : , Procedia Environmental Sciences, 15:3-11 (2012)
Application of rotating cylinder method for ecotoxicological evaluation of antifouling paints

Presenter : Okamura H., Yagi M., Kawachi M., Hanyuda T., Kawai H., Walker I.
Title : , Toxicological & Environmental Chemistry, 94(3):545-556 (2012)
Relationship between hydrocarbons and molecular phylogeny of Botryococcus braunii

Presenter : Kawachi M., Tanoi T., Demura M., Kaya K., Watanabe M.
Title : , Algal Research, 1(2):114-119 (2012)
Prasinoxanthin is absent in the green-colored dinoflagellate Lepidodinium chlorophorum strain NIES-1868: pigment composition and 18S rRNA phylogeny

Presenter : Matsumoto T., Kawachi M., Miyashita H., Inagaki Y.
Title : , Journal of plant research, 125:705-711 (2012)
Life cycle of Chattonella marina (Raphidophyceae) inferred from analysis of microsatellite marker genotypes

Presenter : Demura M., Mary-helene N., Kasai F., Watanabe M., Kawachi M.
Title : , Phycological Research, 60(4):316-325 (2012)
Structural Confirmation of a Unique Carotenoid Lactoside, P457, in Symbiodinium sp. Strain nbrc 104787 Isolated from a Sea Anemone and its Distribution in Dinoflagellates and Various Marine Organisms

Presenter : Wakahama T., Laza-Martı´nez A., Taha A. , Okuyama H., Yoshida K., Kogame K., Awai K., Kawachi M., Maoka T. , Takaichi S.
Title : , Journal of Phycology, 48(6):1392-1402 (2012)
Effects of carbon source on growth and morphology of Botryococcus braunii

Presenter : Tanoi T., Kawachi M., Watanabe M
Title : , Journal of Applied Phycology , 23(1):25-33 (2011)
Whole-genome amplification(WGA)of marine photosynthetic eukaryote populations

Presenter : Cecile Lepere, Demura M., Kawachi M., Sarah Romac, Ian Probert
Title : , Federation of European Microbiological Societies, 76:513-523 (2011)
Green-colored Plastids in the Dinoflagellate Genus Lepidodinium are of Core Chlorophyte Origin

Presenter : Matsumoto T., Shinozaki F., Chikuni T., Yabuki A., Takishita K., Kawachi M., Nakayama T., Inouye I., Hashimoto T., Inagaki Y.
Title : , Protist, 162(2):268-276 (2011)
Denaturing gradient gel electrophoresis shows that bacterial communities change with mid-ocean ballast water exchange

Presenter : Tomaru A., Kawachi M., Demura M., Fukuyo Y.
Title : , Mar.Pollut.Bull., 60(2):299-302 (2010)
Taxonomic reexamination of Chara flobularis(Charales, Charophyceae) from Japan based on oospore morphology and rbcL gene sequences, and the descriotion of C.leptospora sp.nov.

Presenter : Sakayama H., Kasai F., Nozaki H., Watanabe M. M., Kawachi M., Shigyo M. , Nishihiro M., Washitani I., Krienitz L., Ito M.
Title : , J.Phycol., 45(4):917-927 (2009)
Endangered algal species and how to protect them

Presenter : Brodie J, Andersen R.A., Kawachi M., Millar A.J.K.
Title : , Phycologia, 48(5):423-438 (2009)
Taxonomic revision of Chattonella antiqua, C. marina and C. ovata (Raphidophyceae) based on their morphological characteristics and genetic diversity

Presenter : Demura M., Mary-helene N., Kasai F., Watanabe M.M., Kawachi M.
Title : , Phycologia, 48(6):518-535 (2009)
Origins of plastids and glyceraldehyde-3-phosphate dehydrogenase genes in the green-colored dinoflagellate Lepidodinium chlorophorum

Presenter : Takishita K., Kawachi M., Mary-helene N., Matsumoto T., Kakizoe N., Watanabe M.M., Inouye I.., Ishida K.-I., Hashimoto T., Inagaki Y.
Title : , Gene, 410(1):26-36 (2008)
Ultrastructural evidences of growth inhibitory effects of a novel biocide, Akacid rplus, on an aflatoxigenic Aspergillus parasiticus

Presenter : Razzaghi-Abyaneh M., Shams-Ghahfarokhi M., Kawachi M., Eslamifar A., Schmidt O., Schmidt A., Allameh A., Yoshinari T.
Title : , Toxicon, 48(8):1075-1082 (2006)
Induced dimorphic life cycle of a coccolithophorid, Calyptrosphaera sphaeroidea (Prymnesiophyceae, Haptophyta)

Presenter : Noel, M.-H., Kawachi M., Inouye I.
Title : , J.Phycol., 40(1):112-129 (2004)
Re-examination of the marine"chrysophyte"Polypodochrysis teissieri (Pinguiophyceae)

Presenter : Kawachi M., Noel, M.-H., Andersen R.A.
Title : , Phycol.Res., 50(1):91-100 (2002)

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Microbial Culture Collection at the National Institute for Environmental Studies, Tsukuba, Japan

Presenter : Kawachi M., Mary-Helene N.
Title : , PICES Press, 22(2):43-45 (2014)

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Assessment of Possible Environmental Impacts Using Flow-Cytometric Analysis of Metal Toxicity in Marine Phytoplankton

Presenter : Ota S., Koshikawa H., Kawachi M.
Title : , Deep-Sea Mining and the Water Column (2024)
Metal Mobility from Hydrothermal Sulfides into Seawater During Deep Seafloor Mining Operations

Presenter : Fuchida S., Ishibashi J., Nozaki T., Matsushita Y., Kawachi M., Koshikawa H.
Title : , Environmental Issues of Deep-Sea Mining: Impacts, Consequences and Policy Perspectives (2019)
Ecotoxicological Bioassay Using Marine Algae for Deep-Sea Mining

Presenter : Yamagishi T., Ota S., Yamaguchi H., Koshikawa H., Tatarazako, N., Yamamoto H., Kawachi M.
Title : , Environmental Issues of Deep-Sea Mining: Impacts, Consequences and Policy Perspectives (2019)

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What Happened before Losses of Photosynthesis in Cryptophyte Algae?

Presenter : Suzuki S., Matsuzaki R., Yamaguchi H., Kawachi M.
Title : , Molecular biology and evolution, 39(2):1-7 (2022)
Draft Genome Sequences of Three Filamentous Cyanobacterial Strains, Dolichospermum planctonicum NIES-80, Planktothrix agardhii NIES-905, and Sphaerospermopsis reniformis NIES-1949

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Title : , Microbiology Resource Announcements, 8(43):e00605-19 (2019)
Mitochondrial and chloroplast genome sequences of Ulva ohno, a green-tide-forming macroalga in the Southern coastal regions of Japan

Presenter : Suzuki S., Yamaguchi H., Hiraoka M., Kawachi M.
Title : , Mitochondrial DNA Part B, 3(2):765-767 (2018)
Evaluation of the toxicity of leaches from hydrothermal sulfide deposits by means of a delayed fluorescence-based bioassay with the marine cyanobacterium Cyanobium sp. NIES-981

Presenter : Yamagishi T., Fuchida S., Katsumata M, Horie Y, Mori F., Kawachi M., Koshikawa H., Nozaki T., Kumagai H., Ishibasi J., Tatarazako N
Title : , Ecotoxycology (2018)
Draft Genome Sequence of the Toxic Bloom-Forming Cyanobacterium Aphanizomenon flos-aquae NIES-81

Presenter : Cao H, Shimura Y., Kawachi M., Yin Y.
Title : , Genome Announcements, 2(1):e00044-14 (2014)

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Research Result (Presentation)

Research Lecture

Introduction of NBRP Algae and recent activities in MCC-NIES

Presenter : Kawachi M., Suzuki S., Uwai S., Kawai H. , Kogame K.
Name of Society : The 9th Asian Pacific Phycological Forum (2024)
Name of Proceedings : Abstracts, 63-64
Enhancing Surface Seawater Monitoring during Deep-Sea Mining: Onboard Bioassay and Phyto-Alert Systems

Presenter : Koshikawa H., Ota S., Yamagishi T., Namba N,, Kawachi M.
Name of Society : The 9th Asian Pacific Phycological Forum (APPF 2020) (2024)
Name of Proceedings : The 9th Asian Pacific Phycological Forum (APPF 2020), 142
Research Presentation

Practice of Marine Environmental Impact Assessment and Monitoring Using Iso Standards

Presenter : Yamamoto H., Kawachi M., Iijima K., Kawagucci S., Miwa T., Inomata K., Kyo M., Koshikawa H., Tsutsumi K., Yoshida K.
Name of Society : 2023 IEEE Underwater Technology (2023)
Name of Proceedings : Abstracts, 37-41
Research Presentation

Molecular analyses for the snow-inhabiting microorganism, Chionaster nivalis

Presenter : Matsuzaki R., Takashima Y., Suzuki I., Kawachi M., Nozaki H., Nohara S., Degawa Y.
Name of Society : 75th Annual Meeting of the Phycological Society of America (2021)
Name of Proceedings : Abstracts, 85
Research Presentation

Survival of a red tide-forming dinoflagellate depends on certain metabolites supplied by co-cultured bacteria

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Name of Society : Marine Biotechnology Conference 2019 (2019)
Name of Proceedings : Abstract, 99
Research Presentation

Toward molecular bases of photoheterotrophy in the colonial volvocine species Astrephomene gubernaculifera and Volvulina steinii

Presenter : Suguchi A., Yamashita S., Matsuzaki R., Suzuki S., Yamaguchi H., Kawachi M., Noguchi H., Minakuchi Y., Toyada A., Nozaki H.
Name of Society : Volvox 2019 (2019)
Name of Proceedings : Abstracts, 62
Research Presentation

Sexual Reproduction in a snow alga, Chloromonas fukushimae (Volvocales, Chlorophyceae)

Presenter : Matsuzaki R., Kawachi M., Nozaki H., Suzuki I.
Name of Society : The 5th International Volvox Conference (2019)
Name of Proceedings : The 5th International Volvox Conference Program Booklet, 35-36
Research Presentation

Evaluation of galvanic effects of sulfide mineras on metal dissolution from hydrotehrmal sulfides in seawater; implications for impact assessment of SMS-mining on marine environment

Presenter : Fuchida S., Koshikawa H., Kawachi M.
Name of Society : AGU Fall Meeting 2019 (2019)
Name of Proceedings : Abstracts
Research Presentation

Oxidation and metal dissolution mechanisms of polymetallic sulfide complex in seawater; implications for impact assessment of SMS-mining

Presenter : Fuchida S., Shimada K., Ishibashi J., Matsushita Y., Kawachi M., Koshikawa H.
Name of Society : American Geophysical Union 2018 Fall Meeting (2018)
Name of Proceedings : -
Research Presentation

Taxonomy of a new snow-inhabiting species of Chloromonas based on the use of cultured and field-collected materials

Presenter : Matsuzaki R., Nozaki H., Takeuchi N., Hara Y., Kawachi M.
Name of Society : The Fourth International Volvox Conference (2017)
Name of Proceedings : Abstracts, 12
Research Presentation

Onboard ecotoxicological technique to qualify the surface water safety during full-scale mining operation of SMS deposits

Presenter : Koshikawa H., Yamagishi T., Fuchida S., Tatarazako N., Kawachi M.
Name of Society : STAR2017, The Pacific Islands Science, Technology, and Resources Conference (2017)
Name of Proceedings : Abstracts, 23
Research Presentation

Evaluation of metal dissolution from fresh hydrothermal core samples collected at Izena Hole during CK16-05 and rapid detection of their toxicity on marine phytoplankton community; Environmental impact assessment for seafloor metal-mining

Presenter : Fuchida S., Yamagishi T., Koshikawa H., Kawachi M., Fukuhara T., Kumagai H., Nozaki T., Ishibashi J., Maeda L., CK16-05 shipboard scientists
Name of Society : Japan Geoscience Union Meeting 2017 (2017)
Name of Proceedings : Abstract
Research Lecture

Environmental pollution monitoring system using bioassay

Presenter : Koshikawa H., Kawachi M.
Name of Society : EcoDeep SIP Workshop II (2017)
Name of Proceedings : Abstracts, 20
Research Presentation

DEEP SEA MINING AND ITS POSSIBLE IMPACT ON SURFACE PHYTOPLANKTON AT HYDROTHERMAL FIELDS

Presenter : Koshikawa H., Fuchida S., Yokoyama A., Tsuboi S., Yamagishi T., Kawachi M.
Name of Society : ASLO 2017 Aquatic Sciences Meeting (2017)
Name of Proceedings : -
Research Presentation

Possible impact of seafloor mining on surface microbial diversity at Okinawa Trough

Presenter : Kawachi M., Yamaguchi H., Tsuboi S., Fuchida S., Yamagishi T., Koshikawa H.
Name of Society : ASLO 2017 Aquatic Sciences Meeting (2017)
Name of Proceedings : -
Research Presentation

The ftsZ amplicon analysis reveals intraspecific dynamics of Microcystis aeruginosa in Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Tanabe Y., Kataoka T., Tomioka N., Kawachi M.
Name of Society : The 8th Asian Pacific Phycological Forum (2017)
Name of Proceedings : Abstracts, 183
Research Lecture

Genome sequence of Raphidocelis subcapitata provides new genetic tools for toxicological assessment

Presenter : Suzuki S., Yamaguchi H., Nakajima N., Kawachi M.
Name of Society : 8th Asian Pacific Phycological Farum (2017)
Name of Proceedings : Programme & Abstracts APPF 2017, 72
Research Presentation

The 4th term National BioResource Project Algae in Japan

Presenter : Kawachi M., Yamaguchi H., Suzuki J., Kogame K., Hanyuda T., Yamaguchi A., Kawai H.
Name of Society : The 8th Asian Pacific Phycological Forum (2017)
Name of Proceedings : Abstracts, 38
Research Presentation

Development of methods to assess the toxic effects of heavy metals on microalgae using a microbial viability test

Presenter : Ota S., Yamaguchi H., Yamagishi T., Tatarazako N., Fuchida S., Koshikawa H., Kawachi M.
Name of Society : 8th Asian Pacific Phycological Forum (APPF 2017) (2017)
Name of Proceedings : Abstracts, 153
Research Presentation

Seasonal and geographical distribution of near-surface small photosynthetic eukaryotes in the western North Pacific determined by pyrosequencing of 18S rDNA

Presenter : Kataoka T., Yamaguchi H., Sato M., Watanabe T. , Taniuchi Y., Kuwata A., Kawachi M.
Name of Society : Kitasato-KAUST Joint International Workshop, Marine Metagenomics: Comparative Study among Different Marine Resources (2016)
Name of Proceedings : Abstracts, 22
Research Presentation

Arsenic contaminations and its effect on marine phytoplankton during seafloor mining

Presenter : Fuchida S., Koshikawa H., Tsuboi S., Furuichi N., Yamamoto H., Kawachi M.
Name of Society : Goldschmidt Conference 2016 (2016)
Name of Proceedings : Abstract
Research Presentation

Risk of heavy metal and arsenic contaminations and its effect on marine phytoplankton during seafloor mining

Presenter : Fuchida S., Koshikawa H., Tsuboi S., Furuichi N., Yamamoto H., Kawachi M.
Name of Society : japan Geoscience Union Meeting 2016 (2016)
Name of Proceedings : Abstract
Research Presentation

Possible impacts of seafloor mining on phytoplankton communities at hydrothermal fields

Presenter : Koshikawa H., Fuchida S., Tsuboi S., Yamagishi T., Yokoyama A., Kawachi M.
Name of Society : ACO2016, A connected ocean & EuroGOOS joint workshop program (2016)
Name of Proceedings : -
Research Presentation

Genome Sequencing of the Bloom-Forming Cyanobacterium Planktothrix agardhii NIES-204

Presenter : Shimura Y., Fujisawa T., Hirose Y., Kanesaki Y., Yamaguchi H., Kawachi M.
Name of Society : 10th International Conference on Toxic Cyanobacteria (2016)
Name of Proceedings : Abstracts, 65-66
Research Presentation

Characteristics of Triparma laevis f. longispina NIES-3699 with insights to its life cycle

Presenter : Noel Kawachi M., Kawachi M.
Name of Society : 日本進化学会第17回大会 (2015)
Name of Proceedings : Abstracts, 110
Research Presentation

Comparison of the terrestrial and freshwater Leptolyngbya genomes

Presenter : Shimura Y., Hirose Y., Misawa N., Osana Y., Katoh H., Yamaguchi H., Kawachi M.
Name of Society : 15th International Symposium on Phototrophic Prokaryotes (2015)
Name of Proceedings : Abstracts, 179
Research Presentation

Picoeukaryotic diversity in the Northwestern Pacific Ocean based on amplicon sequencing of 18S rRNA gene

Presenter : Yamaguchi H., Sato M., Kawachi M.
Name of Society : National Institute for Environmental Studies, Center for Environmental Biology and Ecosystem Studies Symposium, Unraveling Biodiversity from DNA -From the Management of Databases to the Use of Next Generation Sequencers- (2014)
Name of Proceedings : Abstracts, 27-28
Research Presentation

Community compositional analysis using 454 sequencing applying cryopreserved eukaryotic picopytoplankton originated from marine environments

Presenter : Kataoka T., Yamaguchi H., Kuwata A., Kawachi M.
Name of Society : National Institute for Environmental Studies, Center for Environmental Biology and Ecosstem Studies Symposium: Unraveling Biodiversity from DNA -From the management of databaes to the use of next generation sequencers- (2014)
Name of Proceedings : Abstracts, 28-29
Research Presentation

Microbial Culture Collection and Research Projects at the National Institute for Environmental Studies

Presenter : Kawachi M.
Name of Society : 13th International Conference on Culture Collections (ICCC13) (2013)
Name of Proceedings : Abstracts
Research Presentation

Algae and Protist Culture Collection at NIES and related projects

Presenter : Kawachi M.
Name of Society : 5th Asian Network of Research Resource Centers (ANRRC) International Meeting (2013)
Name of Proceedings : Abstracts, 81
Research Presentation

Huge diversity of marine eukaryotic picoplankton in Sendai Bay, Japan: using next-generation sequencing approach for meta 18S rDNA analyses

Presenter : Yamaguchi H., Demura M., Kuwata A., Kawachi M.
Name of Society : 14th International Symposium on Microbial Ecology (2012)
Name of Proceedings : Abstracts, (PS21):62-63
Research Presentation

Diversified protist and cyanobacteria collection at NIES, Japan

Presenter : Kawachi M.
Name of Society : The 14th International Symposium on Microbial Ecology (2012)
Name of Proceedings : Abstracts, 1023
Research Presentation

Cryopreservation techniques applied to the analysis of oceanic picoplankton diversity

Presenter : Kawachi M., Demura M., Mary-helene N.
Name of Society : The 14th International Symposium on Microbial Ecology (2012)
Name of Proceedings : Abstracts, 497
Research Presentation

Poleward range shifts/expansions of shallow-water marine organisms around Japan

Presenter : Yamano H., Sugihara K. , Kawachi M., Terada R., Sunobe T., Kumagai N.H., Fujii M., Yamanaka Y.
Name of Society : Amakusa Biodiversity Symposium 2012 (2012)
Name of Proceedings : Abstracts, 39
Research Presentation

Cryopreservation techniques applied to the pico-phytoplankton diversity, effectiveness and problems

Presenter : Kawachi M., Mary-helene N., YAMAGUCHI H., Demura M.
Name of Society : 「海洋プランクトンに関する日仏共同シンポジウム」Japan-France Joint Symposium on Marine Plankton (2011)
Name of Proceedings : -
Research Lecture

Microbial Culture Collection and Algal Research Projects at the National Institute for Environmental Studies

Presenter : Kawachi M., Kasai F.
Name of Society : The 3rd Meeting of the Asian Network for Research Resource Centers (ANRRC) (2011)
Name of Proceedings : The 3rd Meeting of the Asian Network for Research Resource Centers (ANRRC) Program and Abstracts, 25
AOACC-Network of Asia Oceania Algal Culture Collections

Presenter : Kasai F., Kawachi M.
Name of Society : The 3rd Meeting of the Asian Network for Research Resource Centers (ANRRC) (2011)
Name of Proceedings : The 3rd Meeting of the Asian Network for Research Resource Centers (ANRRC) Program and Abstracts, 101
Research Lecture

Functional roles of the haptonema

Presenter : Kawachi M.
Name of Society : 13th Int.Nannoplankton Assoc.Meet. (2010)
Name of Proceedings : Abstracts, 72-73
Research Presentation

Flow cytometric analysis and morphology of natural picoplankton population before and after cryopresevation

Presenter : Kawachi M.
Name of Society : 18th Meet.Int.Soc.Evol.Protistol. (2010)
Name of Proceedings : Abstracts
Research Presentation

Molecular phylogeny of Botryococcus braunii relationship with the hydrocarbon types

Presenter : Kawachi M., Tanoi T., Demura M., Kaya K, Watanabe M
Name of Society : 1st Asia-Oceania Innovation Summit (2010)
Name of Proceedings : Abstracts, 52
Research Presentation

Genetic succession of Botryococcus braunii (Trebouxiophyceae, chlorophyta)in two reservoirs

Presenter : Demura M., Kawachi M., Mayuzumi Y., Watanabe M
Name of Society : 1st Asia-Oceania Innovation Summit (2010)
Name of Proceedings : Abstracts, 57
Research Lecture

Global warming and high-latitude corals in Japan

Presenter : Yamano H., Yamano H., Sugihara K., Sugihara K., Namizaki N., Namizaki N., Kawachi M., Kawachi M.
Name of Society : 5th ICRI East Asia Reg.Workshop (2009)
Research Lecture

Global warming and high-latitude corals in Japan

Presenter : Yamano H., Yamano H., Sugihara K., Sugihara K., Namizaki N., Namizaki N., Kawachi M., Kawachi M.
Name of Society : 5th ICRI East Asia Reg.Workshop (2009)
Research Presentation

Dominance of the dinoflagellate Prorocentrum dentatum on the central continental shelf of the East China Sea in early summer, 2007

Presenter : Koshikawa H., Higashi H., Kawachi M., Hasegawa T., Okamura K., Kiyomoto Y., Nishiuchi K., Akiyama H., Kohata K., Murakami S.
Name of Society : PICES 2009 Annu.Meet. (2009)
Name of Proceedings : Abstracts, 149
Research Presentation

Microalgal diversity in Asia-the collaborative research between Japan and Thailand/Indonesia for capacity building of microalgal taxonomy

Presenter : KAWACHI Masanobu
Name of Society : 1st Global Taxonomy Initiative Reg.Workshop Asia (2002)
Name of Proceedings : Abstracts, 26

View all

Practice of Marine Environmental Impact Assessment and Monitoring Using Iso Standards

Presenter : Yamamoto H., Kawachi M., Iijima K., Kawagucci S., Miwa T., Inomata K., Kyo M., Koshikawa H., Tsutsumi K., Yoshida K.
Name of Society : 2023 IEEE Underwater Technology (2023)
Name of Proceedings : Abstracts, 37-41
Molecular analyses for the snow-inhabiting microorganism, Chionaster nivalis

Presenter : Matsuzaki R., Takashima Y., Suzuki I., Kawachi M., Nozaki H., Nohara S., Degawa Y.
Name of Society : 75th Annual Meeting of the Phycological Society of America (2021)
Name of Proceedings : Abstracts, 85
Survival of a red tide-forming dinoflagellate depends on certain metabolites supplied by co-cultured bacteria

Presenter : Suzuki S., Yamaguchi H., Kawachi M.
Name of Society : Marine Biotechnology Conference 2019 (2019)
Name of Proceedings : Abstract, 99
Sexual Reproduction in a snow alga, Chloromonas fukushimae (Volvocales, Chlorophyceae)

Presenter : Matsuzaki R., Kawachi M., Nozaki H., Suzuki I.
Name of Society : The 5th International Volvox Conference (2019)
Name of Proceedings : The 5th International Volvox Conference Program Booklet, 35-36
Oxidation and metal dissolution mechanisms of polymetallic sulfide complex in seawater; implications for impact assessment of SMS-mining

Presenter : Fuchida S., Shimada K., Ishibashi J., Matsushita Y., Kawachi M., Koshikawa H.
Name of Society : American Geophysical Union 2018 Fall Meeting (2018)
Name of Proceedings : -
Taxonomy of a new snow-inhabiting species of Chloromonas based on the use of cultured and field-collected materials

Presenter : Matsuzaki R., Nozaki H., Takeuchi N., Hara Y., Kawachi M.
Name of Society : The Fourth International Volvox Conference (2017)
Name of Proceedings : Abstracts, 12
Onboard ecotoxicological technique to qualify the surface water safety during full-scale mining operation of SMS deposits

Presenter : Koshikawa H., Yamagishi T., Fuchida S., Tatarazako N., Kawachi M.
Name of Society : STAR2017, The Pacific Islands Science, Technology, and Resources Conference (2017)
Name of Proceedings : Abstracts, 23
Evaluation of metal dissolution from fresh hydrothermal core samples collected at Izena Hole during CK16-05 and rapid detection of their toxicity on marine phytoplankton community; Environmental impact assessment for seafloor metal-mining

Presenter : Fuchida S., Yamagishi T., Koshikawa H., Kawachi M., Fukuhara T., Kumagai H., Nozaki T., Ishibashi J., Maeda L., CK16-05 shipboard scientists
Name of Society : Japan Geoscience Union Meeting 2017 (2017)
Name of Proceedings : Abstract
The 4th term National BioResource Project Algae in Japan

Presenter : Kawachi M., Yamaguchi H., Suzuki J., Kogame K., Hanyuda T., Yamaguchi A., Kawai H.
Name of Society : The 8th Asian Pacific Phycological Forum (2017)
Name of Proceedings : Abstracts, 38
Development of methods to assess the toxic effects of heavy metals on microalgae using a microbial viability test

Presenter : Ota S., Yamaguchi H., Yamagishi T., Tatarazako N., Fuchida S., Koshikawa H., Kawachi M.
Name of Society : 8th Asian Pacific Phycological Forum (APPF 2017) (2017)
Name of Proceedings : Abstracts, 153
Characteristics of Triparma laevis f. longispina NIES-3699 with insights to its life cycle

Presenter : Noel Kawachi M., Kawachi M.
Name of Society : 日本進化学会第17回大会 (2015)
Name of Proceedings : Abstracts, 110
Microbial Culture Collection and Research Projects at the National Institute for Environmental Studies

Presenter : Kawachi M.
Name of Society : 13th International Conference on Culture Collections (ICCC13) (2013)
Name of Proceedings : Abstracts
Algae and Protist Culture Collection at NIES and related projects

Presenter : Kawachi M.
Name of Society : 5th Asian Network of Research Resource Centers (ANRRC) International Meeting (2013)
Name of Proceedings : Abstracts, 81
Poleward range shifts/expansions of shallow-water marine organisms around Japan

Presenter : Yamano H., Sugihara K. , Kawachi M., Terada R., Sunobe T., Kumagai N.H., Fujii M., Yamanaka Y.
Name of Society : Amakusa Biodiversity Symposium 2012 (2012)
Name of Proceedings : Abstracts, 39
Cryopreservation techniques applied to the pico-phytoplankton diversity, effectiveness and problems

Presenter : Kawachi M., Mary-helene N., YAMAGUCHI H., Demura M.
Name of Society : 「海洋プランクトンに関する日仏共同シンポジウム」Japan-France Joint Symposium on Marine Plankton (2011)
Name of Proceedings : -
Flow cytometric analysis and morphology of natural picoplankton population before and after cryopresevation

Presenter : Kawachi M.
Name of Society : 18th Meet.Int.Soc.Evol.Protistol. (2010)
Name of Proceedings : Abstracts
Microalgal diversity in Asia-the collaborative research between Japan and Thailand/Indonesia for capacity building of microalgal taxonomy

Presenter : KAWACHI Masanobu
Name of Society : 1st Global Taxonomy Initiative Reg.Workshop Asia (2002)
Name of Proceedings : Abstracts, 26
Toward molecular bases of photoheterotrophy in the colonial volvocine species Astrephomene gubernaculifera and Volvulina steinii

Presenter : Suguchi A., Yamashita S., Matsuzaki R., Suzuki S., Yamaguchi H., Kawachi M., Noguchi H., Minakuchi Y., Toyada A., Nozaki H.
Name of Society : Volvox 2019 (2019)
Name of Proceedings : Abstracts, 62
Evaluation of galvanic effects of sulfide mineras on metal dissolution from hydrotehrmal sulfides in seawater; implications for impact assessment of SMS-mining on marine environment

Presenter : Fuchida S., Koshikawa H., Kawachi M.
Name of Society : AGU Fall Meeting 2019 (2019)
Name of Proceedings : Abstracts
DEEP SEA MINING AND ITS POSSIBLE IMPACT ON SURFACE PHYTOPLANKTON AT HYDROTHERMAL FIELDS

Presenter : Koshikawa H., Fuchida S., Yokoyama A., Tsuboi S., Yamagishi T., Kawachi M.
Name of Society : ASLO 2017 Aquatic Sciences Meeting (2017)
Name of Proceedings : -
Possible impact of seafloor mining on surface microbial diversity at Okinawa Trough

Presenter : Kawachi M., Yamaguchi H., Tsuboi S., Fuchida S., Yamagishi T., Koshikawa H.
Name of Society : ASLO 2017 Aquatic Sciences Meeting (2017)
Name of Proceedings : -
The ftsZ amplicon analysis reveals intraspecific dynamics of Microcystis aeruginosa in Lake Kasumigaura, Japan

Presenter : Yamaguchi H., Tanabe Y., Kataoka T., Tomioka N., Kawachi M.
Name of Society : The 8th Asian Pacific Phycological Forum (2017)
Name of Proceedings : Abstracts, 183
Seasonal and geographical distribution of near-surface small photosynthetic eukaryotes in the western North Pacific determined by pyrosequencing of 18S rDNA

Presenter : Kataoka T., Yamaguchi H., Sato M., Watanabe T. , Taniuchi Y., Kuwata A., Kawachi M.
Name of Society : Kitasato-KAUST Joint International Workshop, Marine Metagenomics: Comparative Study among Different Marine Resources (2016)
Name of Proceedings : Abstracts, 22
Arsenic contaminations and its effect on marine phytoplankton during seafloor mining

Presenter : Fuchida S., Koshikawa H., Tsuboi S., Furuichi N., Yamamoto H., Kawachi M.
Name of Society : Goldschmidt Conference 2016 (2016)
Name of Proceedings : Abstract
Risk of heavy metal and arsenic contaminations and its effect on marine phytoplankton during seafloor mining

Presenter : Fuchida S., Koshikawa H., Tsuboi S., Furuichi N., Yamamoto H., Kawachi M.
Name of Society : japan Geoscience Union Meeting 2016 (2016)
Name of Proceedings : Abstract
Possible impacts of seafloor mining on phytoplankton communities at hydrothermal fields

Presenter : Koshikawa H., Fuchida S., Tsuboi S., Yamagishi T., Yokoyama A., Kawachi M.
Name of Society : ACO2016, A connected ocean & EuroGOOS joint workshop program (2016)
Name of Proceedings : -
Genome Sequencing of the Bloom-Forming Cyanobacterium Planktothrix agardhii NIES-204

Presenter : Shimura Y., Fujisawa T., Hirose Y., Kanesaki Y., Yamaguchi H., Kawachi M.
Name of Society : 10th International Conference on Toxic Cyanobacteria (2016)
Name of Proceedings : Abstracts, 65-66
Comparison of the terrestrial and freshwater Leptolyngbya genomes

Presenter : Shimura Y., Hirose Y., Misawa N., Osana Y., Katoh H., Yamaguchi H., Kawachi M.
Name of Society : 15th International Symposium on Phototrophic Prokaryotes (2015)
Name of Proceedings : Abstracts, 179
Picoeukaryotic diversity in the Northwestern Pacific Ocean based on amplicon sequencing of 18S rRNA gene

Presenter : Yamaguchi H., Sato M., Kawachi M.
Name of Society : National Institute for Environmental Studies, Center for Environmental Biology and Ecosystem Studies Symposium, Unraveling Biodiversity from DNA -From the Management of Databases to the Use of Next Generation Sequencers- (2014)
Name of Proceedings : Abstracts, 27-28
Community compositional analysis using 454 sequencing applying cryopreserved eukaryotic picopytoplankton originated from marine environments

Presenter : Kataoka T., Yamaguchi H., Kuwata A., Kawachi M.
Name of Society : National Institute for Environmental Studies, Center for Environmental Biology and Ecosstem Studies Symposium: Unraveling Biodiversity from DNA -From the management of databaes to the use of next generation sequencers- (2014)
Name of Proceedings : Abstracts, 28-29
Huge diversity of marine eukaryotic picoplankton in Sendai Bay, Japan: using next-generation sequencing approach for meta 18S rDNA analyses

Presenter : Yamaguchi H., Demura M., Kuwata A., Kawachi M.
Name of Society : 14th International Symposium on Microbial Ecology (2012)
Name of Proceedings : Abstracts, (PS21):62-63
Diversified protist and cyanobacteria collection at NIES, Japan

Presenter : Kawachi M.
Name of Society : The 14th International Symposium on Microbial Ecology (2012)
Name of Proceedings : Abstracts, 1023
Cryopreservation techniques applied to the analysis of oceanic picoplankton diversity

Presenter : Kawachi M., Demura M., Mary-helene N.
Name of Society : The 14th International Symposium on Microbial Ecology (2012)
Name of Proceedings : Abstracts, 497
Molecular phylogeny of Botryococcus braunii relationship with the hydrocarbon types

Presenter : Kawachi M., Tanoi T., Demura M., Kaya K, Watanabe M
Name of Society : 1st Asia-Oceania Innovation Summit (2010)
Name of Proceedings : Abstracts, 52
Genetic succession of Botryococcus braunii (Trebouxiophyceae, chlorophyta)in two reservoirs

Presenter : Demura M., Kawachi M., Mayuzumi Y., Watanabe M
Name of Society : 1st Asia-Oceania Innovation Summit (2010)
Name of Proceedings : Abstracts, 57
Dominance of the dinoflagellate Prorocentrum dentatum on the central continental shelf of the East China Sea in early summer, 2007

Presenter : Koshikawa H., Higashi H., Kawachi M., Hasegawa T., Okamura K., Kiyomoto Y., Nishiuchi K., Akiyama H., Kohata K., Murakami S.
Name of Society : PICES 2009 Annu.Meet. (2009)
Name of Proceedings : Abstracts, 149

View all

Introduction of NBRP Algae and recent activities in MCC-NIES

Presenter : Kawachi M., Suzuki S., Uwai S., Kawai H. , Kogame K.
Name of Society : The 9th Asian Pacific Phycological Forum (2024)
Name of Proceedings : Abstracts, 63-64
Genome sequence of Raphidocelis subcapitata provides new genetic tools for toxicological assessment

Presenter : Suzuki S., Yamaguchi H., Nakajima N., Kawachi M.
Name of Society : 8th Asian Pacific Phycological Farum (2017)
Name of Proceedings : Programme & Abstracts APPF 2017, 72
Environmental pollution monitoring system using bioassay

Presenter : Koshikawa H., Kawachi M.
Name of Society : EcoDeep SIP Workshop II (2017)
Name of Proceedings : Abstracts, 20
Microbial Culture Collection and Algal Research Projects at the National Institute for Environmental Studies

Presenter : Kawachi M., Kasai F.
Name of Society : The 3rd Meeting of the Asian Network for Research Resource Centers (ANRRC) (2011)
Name of Proceedings : The 3rd Meeting of the Asian Network for Research Resource Centers (ANRRC) Program and Abstracts, 25
Functional roles of the haptonema

Presenter : Kawachi M.
Name of Society : 13th Int.Nannoplankton Assoc.Meet. (2010)
Name of Proceedings : Abstracts, 72-73
Global warming and high-latitude corals in Japan

Presenter : Yamano H., Yamano H., Sugihara K., Sugihara K., Namizaki N., Namizaki N., Kawachi M., Kawachi M.
Name of Society : 5th ICRI East Asia Reg.Workshop (2009)
Global warming and high-latitude corals in Japan

Presenter : Yamano H., Yamano H., Sugihara K., Sugihara K., Namizaki N., Namizaki N., Kawachi M., Kawachi M.
Name of Society : 5th ICRI East Asia Reg.Workshop (2009)

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KAWACHI Masanobu

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Research Result (Publication)

Research Result (Presentation)