Document Detail

Myrosinases, TGG1 and TGG2, redundantly function in ABA and MeJA signaling in Arabidopsis guard cells.
MedLine Citation:
PMID:  19433491     Owner:  NLM     Status:  MEDLINE    
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 H(2)O(2) 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.
Mohammad Mahbub Islam; Chiharu Tani; Megumi Watanabe-Sugimoto; Misugi Uraji; Md Sarwar Jahan; Choji Masuda; Yoshimasa Nakamura; Izumi C Mori; Yoshiyuki Murata
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-05-11
Journal Detail:
Title:  Plant & cell physiology     Volume:  50     ISSN:  1471-9053     ISO Abbreviation:  Plant Cell Physiol.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-11     Completed Date:  2009-06-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9430925     Medline TA:  Plant Cell Physiol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  1171-5     Citation Subset:  IM    
Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Okayama, Japan.
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MeSH Terms
Abscisic Acid / metabolism*
Acetic Acids / metabolism*
Arabidopsis / enzymology,  genetics*
Arabidopsis Proteins / genetics,  metabolism*
Calcium / metabolism
Cyclopentanes / metabolism*
Glycoside Hydrolases / genetics,  metabolism*
Hydrogen Peroxide / metabolism
Oxylipins / metabolism*
Plant Growth Regulators / metabolism
Plant Stomata / physiology
Signal Transduction
Reg. No./Substance:
0/Acetic Acids; 0/Arabidopsis Proteins; 0/Cyclopentanes; 0/Oxylipins; 0/Plant Growth Regulators; 1211-29-6/methyl jasmonate; 21293-29-8/Abscisic Acid; 7440-70-2/Calcium; 7722-84-1/Hydrogen Peroxide; EC 3.2.1.-/Glycoside Hydrolases; EC protein, Arabidopsis; EC protein, Arabidopsis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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