Yeast elicitor-induced stomatal closure and peroxidase-mediated ros production in Arabidopsis

Md Atiqur Rahman Khokon, Mohammad Anowar Hossain, Shintaro Munemasa, Misugi Uraji, Yoshimasa Nakamura, Izumi C. Mori, Yoshiyuki Murata

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)


Yeast elicitor (YEL) induces stomatal closure. We investigated reactive oxygen species (ROS) production, nitric oxide (NO) production and [Ca 2]cyt oscillations to clarify YEL signaling in Arabidopsis guard cells. YEL induced ROS accumulation in guard cells. A peroxidase inhibitor [salicylhydroxamic acid (SHAM)] inhibited the stomatal closure and the ROS accumulation, but neither the atrbohD atrbohF mutation nor an NADPH oxidase inhibitor [diphenylene iodonium chloride (DPI)] had any effect. An NO scavenger [2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO)] inhibited the YEL-induced stomatal closure and SHAM abolished NO production. YEL-elicited [Ca2]cyt oscillations were inhibited by SHAM but not by the atrbohD atrbohF mutation. These results indicate that YEL induces stomatal closure accompanied by ROS production mediated by peroxidases and NO production.

Original languageEnglish
Pages (from-to)1915-1921
Number of pages7
JournalPlant and Cell Physiology
Issue number11
Publication statusPublished - Nov 2010


  • Arabidopsis thaliana
  • NO
  • Peroxidase
  • ROS production
  • Yeast elicitor
  • [Ca]cyt oscillations

ASJC Scopus subject areas

  • Physiology
  • Plant Science
  • Cell Biology


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