The Roles of<i>CATALASE2</i>in Abscisic Acid Signaling in<i>Arabidopsis</i>Guard Cells

  • JANNAT Rayhanur
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
  • URAJI Misugi
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
  • MOROFUJI Miho
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
  • HOSSAIN Mohammad Anowar
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
  • ISLAM Mohammad Muzahidul
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
  • NAKAMURA Yoshimasa
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
  • MORI Izumi C.
    Institute of Plant Science and Resources (IPSR), Okayama University
  • MURATA Yoshiyuki
    Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University

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  • The Roles of CATALASE2 in Abscisic Acid Signaling in Arabidopsis Guard Cells

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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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