Ref ID : 7426
Takenaka Shigeo, Kondo Tomohiro, Sonbol Nazeri, Tamura Yoshiyuki, Tokunaga Masao, Tsuyama Shingo, Miyatake Kazutaka, and Nakano Yoshihisa; Accumulation of Trehalose as a Compatible Solute under Osmotic Stress in Euglena gracilis Z. J.Eukaryot.Microbiol. 44(6):609-613, 1997
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The photosynthetic protozoon Euglena gracilis, accumulated a large amount of trehalose in the cells under salt or osmotic stresses. Radioactivity of [14C] paramylon, a beta-1,3-polyglucan which was stored in the cells of E. gracilis, was degraded rapidly and this radioactivity was almost stoichiometrically incorporated into trehalose. The interconversion of trehalose from papamylon by salt or osmotic stresses was dependent on the concentrations of osmotic pressures, suggesting that E. gracilis accumulate trehalose as an osmoprotectant. After the removal of salt or osmotic stresses, trehalose was gradually degraded, however, it was not converted into paramylon.