Ref ID : 1873
S. Rossetti, C. Christensson, L.L. Blackall, and V. Tandoi; Phenotypic and phylogenetic description of an Italian isolate of "Microthrix parvicella". Appl.Microbiol. 82:405-410, 1997
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"Microthrix parvicella" strain RN1 was isolated from an activated sludge treatment plant in Italy using micromanipulation techniques. The strain grows as thin unbranched filaments which are Gram-positive with Neisser-positive granules. The isolate was characterized by analysis of the 16SrDNA which was amplified directly from cell biomass by the polymerase chain reaction and sequenced. "Microthrix parvicella" strain RN1 present a very high similarity (100%) with another "M. parvicella" strain recently isolated in Australia, suggesting that this micro-organism, a novel, deep branching member of the actinomycetes subphylum, is the same causing the common events of bulking and foaming phenomena in activated sludge treatment plants throughout the world.