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 language | English |
|---|---|
| Pages (from-to) | 1396-1401 |
| Number of pages | 6 |
| Journal | Plant and Cell Physiology |
| Volume | 49 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sep 2008 |
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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
Roles of RCN1, regulatory a subunit of protein phosphatase 2a, in methyl jasmonate signaling and signal crosstalk between methyl jasmonate and abscisic acid. / Saito, Naoki; Munemasa, Shintaro; Nakamura, Yoshimasa; Shimoishi, Yasuaki; Mori, Izumi; Murata, Yoshiyuki.
In: Plant and Cell Physiology, Vol. 49, No. 9, 09.2008, p. 1396-1401.Research output: Contribution to journal › Article
}
TY - JOUR
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
Y1 - 2008/9
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
UR - http://www.scopus.com/inward/record.url?scp=51749101973&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51749101973&partnerID=8YFLogxK
U2 - 10.1093/pcp/pcn106
DO - 10.1093/pcp/pcn106
M3 - Article
C2 - 18650210
AN - SCOPUS:51749101973
VL - 49
SP - 1396
EP - 1401
JO - Plant and Cell Physiology
JF - Plant and Cell Physiology
SN - 0032-0781
IS - 9
ER -