Yeast Elicitor-Induced Stomatal Closure and Peroxidase-Mediated ROS Production in Arabidopsis | Zendy

Md. Atiqur Rahman Khokon | Zendy; Mohammad Anowar Hossain | Zendy; Shintaro Munemasa | Zendy; Misugi Uraji | Zendy; Y. Nakamura | Zendy; Izumi C. Mori | Zendy; Yukio Murata | Zendy

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Yeast Elicitor-Induced Stomatal Closure and Peroxidase-Mediated ROS Production in Arabidopsis

Author(s) -

Md. Atiqur Rahman Khokon,

Mohammad Anowar Hossain,

Shintaro Munemasa,

Misugi Uraji,

Y. Nakamura,

Izumi C. Mori,

Yukio Murata

Publication year - 2010

Publication title -

plant and cell physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.975

H-Index - 152

eISSN - 1471-9053

pISSN - 0032-0781

DOI - 10.1093/pcp/pcq145

Subject(s) - guard cell , reactive oxygen species , chemistry , arabidopsis , peroxidase , nitric oxide , elicitor , dichlorofluorescein , biochemistry , microbiology and biotechnology , biology , enzyme , organic chemistry , mutant , gene

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 [Ca(2+)](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.

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