Myrosinases, TGG1 and TGG2, Redundantly Function in ABA and MeJA Signaling in Arabidopsis Guard Cells

被引：78

作者：

Islam, Mohammad Mahbub ^{[1
]}

Tani, Chiharu ^{[1
]}

Watanabe-Sugimoto, Megumi ^{[1
]}

Uraji, Misugi ^{[1
]}

Jahan, Md. Sarwar ^{[1
]}

Masuda, Choji ^{[1
]}

Nakamura, Yoshimasa ^{[1
]}

Mori, Izumi C. ^{[2
]}

Murata, Yoshiyuki ^{[1
]}

机构：

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

[2] Okayama Univ, Bioresources Res Inst, Okayama 7100046, Japan

来源：

PLANT AND CELL PHYSIOLOGY | 2009年 / 50卷 / 06期

关键词：

Abscisic acid; Arabidopsis thaliana; Guard cells; Methyl jasmonate; Myrosinase; Reactive oxygen species; OXYGEN SPECIES PRODUCTION; ABSCISIC-ACID ACTIVATION; PROTEIN PHOSPHATASE 2A; CYTOSOLIC-FREE CALCIUM; METHYL JASMONATE; STOMATAL CLOSURE; PLASMA-MEMBRANE; CA2+ CHANNELS; THALIANA; EXPRESSION;

D O I：

10.1093/pcp/pcp066

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Thioglucoside glucohydrolase (myrosinase), TGG1, is a strikingly abundant protein in Arabidopsis guard cells. We investigated responses of tgg1-3, tgg2-1 and tgg1-3 tgg2-1 mutants to abscisic acid (ABA) and methyl jasmonate (MeJA) to clarify whether two myrosinases, TGG1 and TGG2, function during stomatal closure. ABA, MeJA and H2O2 induced stomatal closure in wild type, tgg1-3 and tgg2-1, but failed to induce stomatal closure in tgg1-3 tgg2-1. All mutants and wild type showed Ca-2-induced stomatal closure and ABA-induced reactive oxygen species (ROS)production. A model is discussed in which two myrosinases redundantly function downstream of ROS production and upstream of cytosolic Ca-2 elevation in ABA and MeJA signaling in guard cells.

引用

页码：1171 / 1175

页数：5

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