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

被引：0
|
作者：
Ladas, NP [1 ]
Papageorgiou, GC [1 ]
机构：
[1] Natl Ctr Sci Res Demokritos, Inst Biol, Athens 15310, Greece
来源：
PHOTOSYNTHETICA | 2000年 / 38卷 / 03期
关键词：
absorption spectra; cell doubling; chlorophyll content and fluorescence; cytoplasmic osmolality; glucose; NaCl; saccharose; sugars;
D O I：
暂无
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
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.
引用
收藏
页码：343 / 348
页数：6
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