TY - JOUR
T1 - Myrosinases, TGG1 and TGG2, redundantly function in ABA and MeJA signaling in arabidopsis guard cells
AU - Islam, Mohammad Mahbub
AU - Tani, Chiharu
AU - Watanabe-Sugimoto, Megumi
AU - Uraji, Misugi
AU - Jahan, Md Sarwar
AU - Masuda, Choji
AU - Nakamura, Yoshimasa
AU - Mori, Izumi C.
AU - Murata, Yoshiyuki
N1 - Funding Information:
This research was supported in part by The Asahi Glass Foundation, NOVARTIS Foundation (Japan) for the Promotion of Science, and Grant-in-Aid for Young Scientists and Grants for Scientific Research on Priority Areas from the Ministry of Education, Culture,Sports, Science and Technology of Japan.
PY - 2009/6
Y1 - 2009/6
N2 - 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 Ca2-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 Ca2 elevation in ABA and MeJA signaling in guard cells.
AB - 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 Ca2-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 Ca2 elevation in ABA and MeJA signaling in guard cells.
KW - Abscisic acid
KW - Arabidopsis thaliana
KW - Guard cells
KW - Methyl jasmonate
KW - Myrosinase
KW - Reactive oxygen species
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U2 - 10.1093/pcp/pcp066
DO - 10.1093/pcp/pcp066
M3 - Article
C2 - 19433491
AN - SCOPUS:67649348214
SN - 0032-0781
VL - 50
SP - 1171
EP - 1175
JO - Plant and Cell Physiology
JF - Plant and Cell Physiology
IS - 6
ER -