Deficient glutathione in guard cells facilitates abscisic acid-induced stomatal closure but does not affect light-induced stomatal opening

Md Sarwar Jahan, Ken'ichi Ogawa, Yoshimasa Nakamura, Yasuaki Shimoishi, Izumi C. Mori, Yoshiyuki Murata

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We investigated the role of glutathione (GSH) in stomatal movements using a GSH deficient mutant, chlorinal-1 (ch1-1). Guard cells of ch1-1 mutants accumulated less GSH than wild types did. Light induced stomatal opening in ch1-1 and wild-type plants. Abscisic acid (ABA) induced stomatal closure in ch1-1 mutants more than wild types without enhanced reactive oxygen species (ROS) production. Therefore, GSH functioned downstream of ROS production in the ABA signaling cascade.

Original languageEnglish
Pages (from-to)2795-2798
Number of pages4
JournalBioscience, Biotechnology and Biochemistry
Issue number10
Publication statusPublished - Nov 5 2008



  • Abscisic acid
  • Glutathione
  • Reactive oxygen species
  • Stomatal closing

ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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