Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
Volume 75, Issue 10, Pages 2034-2036Publisher
OXFORD UNIV PRESS
DOI: 10.1271/bbb.110344
Keywords
abscisic acid; catalase; guard cells; hydrogen peroxide; [Ca2+](cyt) oscillation
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology of Japan
- Nissan Science Foundation
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We investigated the roles of catalase (CAT) in abscisic acid (ABA)-induced stomatal closure using a cat2 mutant and an inhibitor of CAT, 3-aminotriazole (AT). Constitutive reactive oxygen species (ROS) accumulation due to the CAT2 mutation and AT treatment did not affect stomatal aperture in the absence of ABA, whereas ABA-induced stomatal closure, ROS production, and [Ca2+](cyt) oscillation were enhanced.
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