Stability of plant vacuolar membranes under the conditions of osmotic stress and influence of redox agents

被引：6
|
作者：
Nurminsky V.N. [1 ]
Ozolina N.V. [1 ]
Nesterkina I.S. [1 ]
Kolesnikova E.V. [1 ]
Korzun A.M. [1 ]
Chernyshov M.Yu. [2 ]
Tikhonov N.V. [3 ]
Tarkov M.S. [3 ]
Salyaev R.K. [1 ]
机构：
[1] Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk 664033, ul. Lermontova
[2] Presidium of Irkutsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Irkutsk 664033, ul. Lermontova
[3] Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, prosp. Lavrent'eva
来源：
Biochemistry (Moscow) Supplement Series A: Membrane and Cell Biology | 2011年 / 5卷 / 2期
基金：
俄罗斯基础研究基金会;
关键词：
fatty-acid composition of tonoplast lipids; osmotic stress; redox agents; stability of plant vacuolar membranes; tonoplast; vacuoles of plant cells;
D O I：
10.1134/S1990747811020048
中图分类号：
学科分类号：
摘要：
Stability of plant vacuolar membranes (tonoplast), which underwent two types of osmotic stress and also the effect of redox agents (glutathione in its oxidized (GSSG) and reduced (GSH) forms) and nitric oxide (NO) under various pH values, has been investigated. The fatty-acid content of tonoplast has also been determined. It has been shown that stability of vacuoles decreased under hyperosmotic stress but not under hypoosmotic stress. These effects are unlikely caused by the fatty-acid content of vacuolar membranes. Stability of vacuoles changed under various redox conditions; this process was more intensive under the conditions of hypoosmotic stress in the experiments with oxidized glutathione. The influence of nitrogen oxide was different for various kinds of stress: stability of vacuoles decreased substantially under hypoosmotic stress, while under the conditions of hyperosmotic stress NO elevated the stability level of the vacuolar membranes. © 2011 Pleiades Publishing, Ltd.
引用
收藏
页码：185 / 190
页数：5
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