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

MPK9 and MPK12 function in SA-induced stomatal closure in Arabidopsis thaliana
Khokon, Md. Atiqur RahmanSalam, Mohammad AbdusJammes, FabienYe, WenxiuHossain, Mohammad AnowarOkuma, EijiNakamura, YoshimasaMori, Izumi C.Kwak, June M.Murata, Yoshiyuki
DGIST Authors
Kwak, June M.
Issued Date
Article Type
2 (2 Amino 3 Methoxyphenyl) 4H 1 Benzopyran 4 OneAbscisic Acid (ABA)Abscisic Acid (ABA)Abscisic Acid (ABA)AcetatesAcetic Acid DerivativeActivated Protein KinasesAgonistsArabidopsisArabidopsis ProteinArabidopsis ProteinsArabidopsis ThalianaCell SignalingCellsCyclopentane DerivativeCyclopentanesCytologyCytosolicCytosolic AlkalizationCytosolic AlkalizationCytosolic CalciumDrug EffectsEnzyme ActivityEnzymesFlavonoidFlavonoidsGene Expression RegulationGene Expression Regulation, PlantGeneticsGuard CellsGuard CellsHydrogen Ion ConcentrationHypersensitive ResponseJasmonic Acid Methyl EsterMembrane PotentialMembrane PotentialsMetabolismMethyl JasmonateMethyl JasmonateMitogen Activated Protein KinaseMitogen Activated Protein KinaseMitogen Activated Protein KinasesMitogen Activated Protein KinaseMitogen Activated Protein KinaseMPK12 Protein, ArabidopsisMPK9 Protein, ArabidopsisMutationMutationOxygen Species ProductionOxylipinOxylipinspHPhytohormonePlant Growth RegulatorsPlant ShutdownsPlant StomaPlant StomataPlants (Botany)Protein Kinase InhibitorProtein Kinase InhibitorsProteinsReactive Oxygen MetaboliteReactive Oxygen Species (ROS)Reactive Oxygen Species (ROS)Reactive Oxygen Species (ROS)S Type Anion Channel in Guard CellsSalicylic AcidSalicylic AcidSalicylic AcidSalicylic AcidSignal TransductionSignal TransductionSignalingStomatal ClosuresSuperoxide GenerationSuspension CultureVoltage Dependent Anion ChannelsVoltage Dependent Anion ChannelWild Type Plants
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
Japan Society for Bioscience Biotechnology and Agrochemistry
Related Researcher
  • 곽준명 Kwak, June Myoung 뉴바이올로지학과
  • Research Interests Calcium Signaling; ABA;ROS Signaling; plant development; Development of Abscission; Culluar Features; Signaling network; Environmental Regulation
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Department of New Biology Lab of Cell Signaling and Development 1. Journal Articles


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