The salinity tolerance of freshwater cyanobacterium Synechococcus sp. PCC 7942 is determined by its ability for osmotic adjustment and presence of osmolyte sucrose

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Abstract

We investigated the factors that impose an upper limit of salinity tolerance to the unicellular freshwater cyanobacterium Synechococcus sp. PCC 7942. Above approx. 0.4 M NaCl, Synechococcus cells cease to proliferate, after having accumulated 0.3 M sucrose. Cells that pre-accumulated sucrose could tolerate up to 0.5 M NaCl, but not 0.6 M NaCl. After exposure to 0.5 M NaCl or higher, the cells were irreversibly modified becoming unable for osmotic volume adjustments.

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Ladas, N. P., & Papageorgiou, G. C. (2001). The salinity tolerance of freshwater cyanobacterium Synechococcus sp. PCC 7942 is determined by its ability for osmotic adjustment and presence of osmolyte sucrose. Photosynthetica, 38(3), 343–348. https://doi.org/10.1023/A:1010957117237

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