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MPK9 and MPK12 function in SA-induced stomatal closure in Arabidopsis thaliana

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Title
MPK9 and MPK12 function in SA-induced stomatal closure in Arabidopsis thaliana
Author(s)
Md. Atiqur Rahman Khokon; Mohammad Abdus Salam; Fabien Jammes; Wenxiu Ye; Mohammad Anowar Hossain; Eiji Okuma; Yoshimasa Nakamura; Izumi C. Mori; June M. Kwak; Yoshiyuki Murata
Publication Date
2017-08
Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY, v.81, no.7, pp.1394 - 1400
Publisher
JAPAN SOC BIOSCI BIOTECHN AGROCHEM
Abstract
Salicylic acid (SA) induces stomatal closure sharing several components with abscisic acid (ABA) and methyl jasmonate (MeJA) signaling. We have previously shown that two guard cell-preferential mitogen-activated protein kinases (MAPKs), MPK9 and MPK12, positively regulate ABA signaling and MeJA signaling in Arabidopsis thaliana. In this study, we examined whether these two MAPKs are involved in SA-induced stomatal closure using genetic mutants and a pharmacological, MAPKK inhibitor. Salicylic acid induced stomatal closure in mpk9 and mpk12 single mutants but not in mpk9 mpk12 double mutants. The MAPKK inhibitor PD98059 inhibited SA-induced stomatal closure in wild-type plants. Salicylic acid induced extracellular reactive oxygen species (ROS) production, intracellular ROS accumulation, and cytosolic alkalization in the mpk9, mpk12, and mpk9 mpk12 mutants. Moreover, SA-activated S-type anion channels in guard cells of wild-type plants but not in guard cells of mpk9 mpk12 double mutants. These results imply that MPK9 and MPK12 are positive regulators of SA signaling in Arabidopsis guard cells. © 2017 Japan Society for Bioscience, Biotechnology, and Agrochemistry
URI
https://pr.ibs.re.kr/handle/8788114/3801
ISSN
0916-8451
Appears in Collections:
Center for Plant Aging Research (식물 노화·수명 연구단) > Journal Papers (저널논문)
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