MAP kinases, MPK9 and MPK12, regulate chitosan-induced stomatal closure.

MAP kinases, MPK9 and MPK12, regulate chitosan-induced stomatal closure.

Bioscience, biotechnology, and biochemistry (2012-09-14)

Mohammad Abdus Salam, Fabien Jammes, Mohammad Anowar Hossain, Wenxiu Ye, Yoshimasa Nakamura, Izumi C Mori, June M Kwak, Yoshiyuki Murata

PMID22972330

RESUMEN

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 Ca(2+) oscillation in mpk9 mpk12. These results suggest that MPK9 and MPK12 are involved in CHT-induced stomatal closure.