Article
The roles of CATALASE2 in abscisic acid signaling in Arabidopsis guard cells.
Bioscience, biotechnology, and biochemistry - 1 Jan 2011
Jannat Rayhanur, Uraji Misugi, Morofuji Miho, Hossain Mohammad Anowar, Islam Mohammad Muzahidul, Nakamura Yoshimasa, Mori Izumi C, Murata Yoshiyuki
Abstract excerpt
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.
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