Chitosan-Induced Stomatal Closure Accompanied by Peroxidase-Mediated Reactive Oxygen Species Production in Arabidopsis

Md. Atiqur Rahman KHOKON; Misugi URAJI; Shintaro MUNEMASA; Eiji OKUMA; Yoshimasa NAKAMURA; Izumi C. MORI; Yoshiyuki MURATA

doi:10.1271/bbb.100340

Biochemistry & Molecular Biology Notes

Chitosan-Induced Stomatal Closure Accompanied by Peroxidase-Mediated Reactive Oxygen Species Production in Arabidopsis

Md. Atiqur Rahman KHOKON, Misugi URAJI, Shintaro MUNEMASA, Eiji OKUMA, Yoshimasa NAKAMURA, Izumi C. MORI, Yoshiyuki MURATA

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Keywords: chitosan, peroxidase, reactive oxygen species, stomatal closure, Arabidopsis

JOURNAL FREE ACCESS

2010 Volume 74 Issue 11 Pages 2313-2315

DOI https://doi.org/10.1271/bbb.100340

View "Advance Publication" version (November 7, 2010).

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Abstract

Chitosan induced stomatal closure in wild type-plants and NADPH oxidase knock-out mutants (atrbohD atrbohF), and reactive oxygen species (ROS) production in wild-type guard cells. Closure and production were completely abolished by catalase and a peroxidase inhibitor. These results indicate that chitosan induces ROS production mediated by peroxidase, resulting in stomatal closure.

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