Regulation of intracellular level of Na+, K+ and glycerol in Saccharomyces cerevisiae under osmotic stress

被引:0
|
作者
Sunder, S [1 ]
Singh, AJ [1 ]
Gill, S [1 ]
Singh, B [1 ]
机构
[1] GURU NANAK DEV UNIV, DEPT MOLEC BIOL & BIOCHEM, AMRITSAR 143005, PUNJAB, INDIA
关键词
osmotic stress; Saccharomyces cerevisiae; glycerol; K+/Na+ ions; osmoregulation;
D O I
暂无
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
The intracellular level of Na+ and K+ of S. cerevisiae strain AB 1375 revealed that under KCl as well as sorbitol stress, the cationic level was comparable to the level under no stress conditions. On the other hand, there was a sharp drop in the intracellular K+ content and increase in the Na+ content on addition of NaCl to the medium. However, the total cationic level was close to that under control conditions. In addition to changes in the cationic level, an enhanced production and accumulation of glycerol were also observed under osmotic stress. A regulatory mechanism co-ordinating the intracellular concentration of glycerol as well as Na+,K+ content under osmotic stress conditions has been proposed.
引用
收藏
页码:121 / 124
页数:4
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