MAP Kinases, MPK9 and MPK12, Regulate Chitosan-Induced Stomatal Closure

Mohammad Abdus SALAM; Fabien JAMMES; Mohammad Anowar HOSSAIN; Wenxiu YE; Yoshimasa NAKAMURA; Izumi C. MORI; June M. KWAK; Yoshiyuki MURATA

doi:10.1271/bbb.120228

Biochemistry & Molecular Biology Notes

MAP Kinases, MPK9 and MPK12, Regulate Chitosan-Induced Stomatal Closure

Mohammad Abdus SALAM, Fabien JAMMES, Mohammad Anowar HOSSAIN, Wenxiu YE, Yoshimasa NAKAMURA, Izumi C. MORI, June M. KWAK, Yoshiyuki MURATA

Author information

Mohammad Abdus SALAM
Graduate School of Natural Science and Technology, Okayama University
Fabien JAMMES
Department of Cell Biology and Molecular Genetics, University of Maryland
Mohammad Anowar HOSSAIN
Graduate School of Natural Science and Technology, Okayama University
Wenxiu YE
Graduate School of Natural Science and Technology, Okayama University
Yoshimasa NAKAMURA
Graduate School of Natural Science and Technology, Okayama University
Izumi C. MORI
Institute of Plant Science and Resources, Okayama University
June M. KWAK
Department of Cell Biology and Molecular Genetics, University of Maryland
Department of Plant Science and Landscape Architecture, University of Maryland
Department of Plant Molecular Systems Biotechnology and Crop Biotech Institute, Kyung Hee University
Yoshiyuki MURATA
Graduate School of Natural Science and Technology, Okayama University

Keywords: chitosan, cytosolic alkalization, cytosolic Ca²⁺, reactive oxygen species, stomatal closure

JOURNAL FREE ACCESS

2012 Volume 76 Issue 9 Pages 1785-1787

DOI https://doi.org/10.1271/bbb.120228

View "Advance Publication" version (September 7, 2012).

Details

Abstract

Chitosan (CHT)-induced stomatal closure was inhibited by an MAPKK inhibitor, PD98059, and was impaired in mpk9 mpk12 but not in mpk9 or mpk12. CHT induced the production of reactive oxygen species, cytosolic alkalization, and cytosolic Ca²⁺ oscillation in mpk9 mpk12. These results suggest that MPK9 and MPK12 are involved in CHT-induced stomatal closure.

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