Rapid transmission of oxidative and nitrosative stress signals from roots to shoots in Arabidopsis

被引：58

作者：

Capone, R ^{[1
]}

Tiwari, BS ^{[1
]}

Levine, A ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Dept Plant Sci, IL-91904 Jerusalem, Israel

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 2004年 / 42卷 / 05期

关键词：

arabidopsis; MAP kinase; nitric oxide; oxidative stress; p38; kinase; sodium nitroprusside;

D O I：

10.1016/j.plaphy.2004.03.005

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Protein kinases play a central role in signal transduction pathways in eukaryotes. A highly conserved group of kinases, termed mitogen-activated-protein kinases (MAPKs) was shown to mediate many diverse stress responses. In plants, MAPKs were shown to function in resistance responses to many biotic and abiotic stresses. Here, we show that exposure of Arabidopsis roots to hydrogen peroxide or to nitric oxide resulted in rapid activation of protein kinases in the shoots that exhibited MAPK properties. The same pattern of kinases was induced by direct injection of these compounds into leaves, indicating accurate long-distance transmission of H2O2 and NO signals. These results are important for the understanding of redox signal transmission from the rhizosphere throughout the plant. Crown Copyright (C) 2004 Published by Elsevier SAS. All rights reserved.

引用

页码：425 / 428

页数：4

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