Roles of RCN1, regulatory a subunit of protein phosphatase 2a, in methyl jasmonate signaling and signal crosstalk between methyl jasmonate and abscisic acid

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Abstract

Methyl jasmonate (MeJA) as well as abscisic acid (ABA) induces stomatal closure with their signal crosstalk. We investigated the function of a regulatory A subunit of protein phosphatase 2A, RCN1, in MeJA signaling. Both MeJA and ABA failed to induce stomatal closure in Arabidopsis rcn1 knockout mutants unlike in wild-type plants. Neither MeJA nor ABA induced reactive oxygen species (ROS) production and suppressed inward-rectifying potassium channel activities in rcn1 mutants but not in wild-type plants. These results suggest that RCN1 functions upstream of ROS production and downstream of the branch point of MeJA signaling and ABA signaling in Arabidopsis guard cells.

Original languageEnglish
Pages (from-to)1396-1401
Number of pages6
JournalPlant and Cell Physiology
Volume49
Issue number9
DOIs
Publication statusPublished - Sep 2008

Fingerprint

Protein Phosphatase 2
phosphoprotein phosphatase
Abscisic Acid
methyl jasmonate
abscisic acid
Arabidopsis
reactive oxygen species
Reactive Oxygen Species
knockout mutants
Potassium Channels
potassium channels
guard cells
mutants

Keywords

  • Abscisic acid
  • Arabidopsis thaliana
  • Guard cells
  • K channel
  • Methyl jasmonate
  • Reactive oxygen species

ASJC Scopus subject areas

  • Plant Science
  • Physiology
  • Cell Biology

Cite this

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title = "Roles of RCN1, regulatory a subunit of protein phosphatase 2a, in methyl jasmonate signaling and signal crosstalk between methyl jasmonate and abscisic acid",
abstract = "Methyl jasmonate (MeJA) as well as abscisic acid (ABA) induces stomatal closure with their signal crosstalk. We investigated the function of a regulatory A subunit of protein phosphatase 2A, RCN1, in MeJA signaling. Both MeJA and ABA failed to induce stomatal closure in Arabidopsis rcn1 knockout mutants unlike in wild-type plants. Neither MeJA nor ABA induced reactive oxygen species (ROS) production and suppressed inward-rectifying potassium channel activities in rcn1 mutants but not in wild-type plants. These results suggest that RCN1 functions upstream of ROS production and downstream of the branch point of MeJA signaling and ABA signaling in Arabidopsis guard cells.",
keywords = "Abscisic acid, Arabidopsis thaliana, Guard cells, K channel, Methyl jasmonate, Reactive oxygen species",
author = "Naoki Saito and Shintaro Munemasa and Yoshimasa Nakamura and Yasuaki Shimoishi and Izumi Mori and Yoshiyuki Murata",
year = "2008",
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T1 - Roles of RCN1, regulatory a subunit of protein phosphatase 2a, in methyl jasmonate signaling and signal crosstalk between methyl jasmonate and abscisic acid

AU - Saito, Naoki

AU - Munemasa, Shintaro

AU - Nakamura, Yoshimasa

AU - Shimoishi, Yasuaki

AU - Mori, Izumi

AU - Murata, Yoshiyuki

PY - 2008/9

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N2 - Methyl jasmonate (MeJA) as well as abscisic acid (ABA) induces stomatal closure with their signal crosstalk. We investigated the function of a regulatory A subunit of protein phosphatase 2A, RCN1, in MeJA signaling. Both MeJA and ABA failed to induce stomatal closure in Arabidopsis rcn1 knockout mutants unlike in wild-type plants. Neither MeJA nor ABA induced reactive oxygen species (ROS) production and suppressed inward-rectifying potassium channel activities in rcn1 mutants but not in wild-type plants. These results suggest that RCN1 functions upstream of ROS production and downstream of the branch point of MeJA signaling and ABA signaling in Arabidopsis guard cells.

AB - Methyl jasmonate (MeJA) as well as abscisic acid (ABA) induces stomatal closure with their signal crosstalk. We investigated the function of a regulatory A subunit of protein phosphatase 2A, RCN1, in MeJA signaling. Both MeJA and ABA failed to induce stomatal closure in Arabidopsis rcn1 knockout mutants unlike in wild-type plants. Neither MeJA nor ABA induced reactive oxygen species (ROS) production and suppressed inward-rectifying potassium channel activities in rcn1 mutants but not in wild-type plants. These results suggest that RCN1 functions upstream of ROS production and downstream of the branch point of MeJA signaling and ABA signaling in Arabidopsis guard cells.

KW - Abscisic acid

KW - Arabidopsis thaliana

KW - Guard cells

KW - K channel

KW - Methyl jasmonate

KW - Reactive oxygen species

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