Negative regulation of abscisic acid-induced stomatal closure by glutathione in Arabidopsis

被引：59

作者：

Okuma, Eiji ^{[1
]}

Jahan, Md Sarwar ^{[1
]}

Munemasa, Shintaro ^{[1
]}

Hossain, Mohammad Anowar ^{[1
]}

Muroyama, Daichi ^{[1
]}

Islam, Mohammad Mahbub ^{[1
]}

Ogawa, Ken'ichi ^{[2
]}

Watanabe-Sugimoto, Megumi ^{[1
]}

Nakamura, Yoshimasa ^{[1
]}

Shimoishi, Yasuaki ^{[1
]}

Mori, Izumi C. ^{[3
]}

Murata, Yoshiyuki ^{[1
]}

机构：

[1] Okayama Univ, Grad Sch Nat Sci & Technol, Div Biosci, Okayama 7008530, Japan

[2] Res Inst Biol Sci, Kibichuo, Okayama 7161241, Japan

[3] Okayama Univ, Inst Plant Sci & Resources, Okayama 7100046, Japan

来源：

JOURNAL OF PLANT PHYSIOLOGY | 2011年 / 168卷 / 17期

基金：

日本学术振兴会;

关键词：

Abscisic acid; Cytosolic calcium; Glutathione; Reactive oxygen species; Stomatal closure; COMMELINA GUARD-CELLS; NITRIC-OXIDE; SIGNAL-TRANSDUCTION; HYDROGEN-PEROXIDE; METHYL JASMONATE; STRESS RESPONSES; PLASMA-MEMBRANE; CA2+ CHANNELS; CALCIUM; OXYGEN;

D O I：

10.1016/j.jplph.2011.06.002

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We found that glutathione (GSH) is involved in abscisic acid (ABA)-induced stomatal closure. Regulation of ABA signaling by GSH in guard cells was investigated using an Arabidopsis mutant. cad2-1. that is deficient in the first GSH biosynthesis enzyme, gamma-glutamylcysteine synthetase, and a GSH-decreasing chemical, 1-chloro-2,4-dinitrobenzene (CDNB). Glutathione contents in guard cells decreased along with ABA-induced stomata! closure. Decreasing GSH by both the cad2-1 mutation and CDNB treatment enhanced ABA-induced stomata! closure. Glutathione monoethyl ester (GSHmee) restored the GSH level in cad2-1 guard cells and complemented the stomatal phenotype of the mutant. Depletion of GSH did not significantly increase ABA-induced production of reactive oxygen species in guard cells and GSH did not affect either activation of plasma membrane Ca2+-permeable channel currents by ABA or oscillation of the cytosolic free Ca2+ concentration induced by ABA. These results indicate that GSH negatively modulates a signal component other than ROS production and Ca2+ oscillation in ABA signal pathway of Arabidopsis guard cells. (C) 2011 Elsevier GmbH. All rights reserved.

引用

页码：2048 / 2055

页数：8

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