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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
18
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pubmed:dateCreated |
2009-9-15
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pubmed:abstractText |
The plant hormone abscisic acid (ABA) triggers production of reactive oxygen species (ROS) in guard cells via the AtrbohD and AtrbohF NADPH oxidases, leading to stomatal closure. The ABA-activated SnRK2 protein kinase open stomata 1 (OST1) (SRK2E/SnRK2.6) acts upstream of ROS in guard cell ABA signaling. Here, we report that OST1 phosphorylates Ser13 and Ser174 on AtrbohF. In addition, substitution of Ser174 to Ala results in a approximately 40% reduction in the phosphorylation of AtrbohF by OST1. We also show that OST1 physically interacts with AtrbohF. These results provide biochemical evidence suggesting that OST1 regulates AtrbohF activity.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
1873-3468
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pubmed:author |
pubmed-author:AroAA,
pubmed-author:DavantureMarlèneM,
pubmed-author:DjaouiMichaëlM,
pubmed-author:HuHeng-ChengHC,
pubmed-author:KwakJune MJM,
pubmed-author:LeeSangmeeS,
pubmed-author:LeungJeffreyJ,
pubmed-author:MerlotSylvainS,
pubmed-author:SirichandraCarolineC,
pubmed-author:ValotBenoîtB,
pubmed-author:ZivyMichelM
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pubmed:issnType |
Electronic
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pubmed:day |
17
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pubmed:volume |
583
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2982-6
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pubmed:dateRevised |
2009-12-3
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pubmed:meshHeading |
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pubmed:year |
2009
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pubmed:articleTitle |
Phosphorylation of the Arabidopsis AtrbohF NADPH oxidase by OST1 protein kinase.
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pubmed:affiliation |
Institut des Sciences du Végétal, Centre National de la Recherche Scientifique, UPR 2355, Gif-sur-Yvette, France.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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