title: The roles of CATALASE2 in abscisic acid signaling in Arabidopsis guard cells.
abstract: 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 [Ca(2+)](cyt) oscillation were enhanced.
authors: Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.
authors: Rayhanur
authors: R
authors: Jannat
authors: Misugi
authors: M
authors: Uraji
authors: Miho
authors: M
authors: Morofuji
authors: Mohammad Anowar
authors: MA
authors: Hossain
authors: Mohammad Muzahidul
authors: MM
authors: Islam
authors: Yoshimasa
authors: Y
authors: Nakamura
authors: Izumi C
authors: IC
authors: Mori
authors: Yoshiyuki
authors: Y
authors: Murata
mesh_terms: D000040:Abscisic Acid / Q000378:metabolism*; D000640:Amitrole / Q000494:pharmacology; D017360:Arabidopsis / Q000166:cytology* / Q000187:drug effects / Q000201:enzymology*; D002374:Catalase / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D004791:Enzyme Inhibitors / Q000494:pharmacology; D009154:Mutation; D054046:Plant Stomata / Q000166:cytology / Q000187:drug effects / Q000201:enzymology; D015398:Signal Transduction / Q000187:drug effects
chemical_list: D004791:Enzyme Inhibitors; D000040:Abscisic Acid; D002374:Catalase; D000640:Amitrole