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Chitosan-induced stomatal closure accompanied by peroxidase-mediated reactive oxygen species production in Arabidopsis.

Bioscience, biotechnology, and biochemistry

pharmacology, Arabidopsis, Reactive Oxygen Species, metabolism, drug effects, Plant Stomata, Peroxidase, genetics, NADPH Oxidase, Gene Knockout Techniques, Chitosan, Catalase

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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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      Journal
      10.1271/bbb.100340
      21071853

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