Catalases negatively regulate methyl jasmonate signaling in guard cells

Rayhanur Jannat, Misugi Uraji, Mohammad Anowar Hossain, Mohammad Muzahidul Islam, Yoshimasa Nakamura, Izumi Mori, Yoshiyuki Murata

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Methyl jasmonate (MeJA)-induced stomatal closure is accompanied by the accumulation of hydrogen peroxide (H 2O 2) in guard cells. In this study, we investigated the roles of catalases (CATs) in MeJA-induced stomatal closure using cat mutants cat2, cat3-1 and cat1 cat3, and the CAT inhibitor, 3-aminotriazole (AT). When assessed with 2',7'-dichlorodihydrofluorescein, the reduction of catalase activity by means of mutations and the inhibitor accumulated higher basal levels of H 2O 2 in guard cells whereas they did not affect stomatal aperture in the absence of MeJA. In contrast, the cat mutations and the treatment with AT potentiated MeJA-induced stomatal closure and MeJA-induced H 2O 2 production. These results indicate that CATs negatively regulate H 2O 2 accumulation in guard cells and suggest that inducible H 2O 2 production rather than constitutive elevation modulates stomatal apertures in Arabidopsis.

Original languageEnglish
Pages (from-to)1012-1016
Number of pages5
JournalJournal of Plant Physiology
Volume169
Issue number10
DOIs
Publication statusPublished - Jul 1 2012

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methyl jasmonate
guard cells
Catalase
catalase
Amitrole
Cats
cats
mutation
Mutation
Arabidopsis
Hydrogen Peroxide
hydrogen peroxide
mutants

Keywords

  • Catalase
  • Guard cells
  • Hydrogen peroxide
  • Methyl jasmonate

ASJC Scopus subject areas

  • Plant Science
  • Physiology
  • Agronomy and Crop Science

Cite this

Catalases negatively regulate methyl jasmonate signaling in guard cells. / Jannat, Rayhanur; Uraji, Misugi; Hossain, Mohammad Anowar; Islam, Mohammad Muzahidul; Nakamura, Yoshimasa; Mori, Izumi; Murata, Yoshiyuki.

In: Journal of Plant Physiology, Vol. 169, No. 10, 01.07.2012, p. 1012-1016.

Research output: Contribution to journalArticle

Jannat, Rayhanur ; Uraji, Misugi ; Hossain, Mohammad Anowar ; Islam, Mohammad Muzahidul ; Nakamura, Yoshimasa ; Mori, Izumi ; Murata, Yoshiyuki. / Catalases negatively regulate methyl jasmonate signaling in guard cells. In: Journal of Plant Physiology. 2012 ; Vol. 169, No. 10. pp. 1012-1016.
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