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 1 2008 |
Keywords
- Abscisic acid
- Arabidopsis thaliana
- Guard cells
- K channel
- Methyl jasmonate
- Reactive oxygen species
ASJC Scopus subject areas
- Physiology
- Plant Science
- Cell Biology
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Saito, N., Munemasa, S., Nakamura, Y., Shimoishi, Y., Mori, I. C., & Murata, Y. (2008). Roles of RCN1, regulatory a subunit of protein phosphatase 2a, in methyl jasmonate signaling and signal crosstalk between methyl jasmonate and abscisic acid. Plant and Cell Physiology, 49(9), 1396-1401. https://doi.org/10.1093/pcp/pcn106