Effects of exogenous H2O2 on the content of endogenous H2O2, activities of catalase and hydrolases, and cell ultrastructure in tobacco leaves

被引：5

作者：

Lapshina, L. A. ^{[1
]}

Reunov, A. V. ^{[1
]}

Nagorskaya, V. P. ^{[1
]}

机构：

[1] Russian Acad Sci, Pacific Inst Bioorgan Chem, Far East Branch, Pr Sto Let Vladivostoku 159, Vladivostok 690022, Russia

来源：

BIOLOGY BULLETIN | 2016年 / 43卷 / 05期

关键词：

OXIDIZED PROTEINS; OXIDATIVE STRESS; DEATH; DEGRADATION; PLANTS; AUTOPHAGY; PROTEASES; ENZYMES; ROLES; VPE;

D O I：

10.1134/S1062359016050058

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

It was shown that tobacco leaf treatment with 100 mM H2O2 increased their content of endogenous H2O2 and activities of catalase and hydrolases (acid phosphatase, proteases, and RNase) and also caused various changes in the cell structure. In this case, programmed cell death (PCD) occurred in some cells, which was observed as chromatin condensation, cytoplasm collapse, etc. In the meantime, many cells displayed organelle activation rather than PCD. It is suggested that cells that undergo H2O2-dependent PCD release signaling molecules inducing protective mechanisms against oxidative stress in neighboring cells not exhibiting PCD.

引用

页码：419 / 425

页数：7

共 25 条

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