Mapping out the roles of MAP kinases in plant defense. |
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| Authors: | R W Innes |
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| Affiliation: | 1. Department of Bioscience, Aarhus University. Vejlsovej 25, 8600 Silkeborg, Denmark;2. INRA - Montpellier SupAgro. 2 Place Pierre Viala, 34060 Montpellier, France;3. Institute for Evolution and Ecology, Tübingen University. Auf der Morgenstelle 5, 72076 Tübingen, Germany |
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| Abstract: | Arabidopsis contains 20 MAP kinase genes, but their roles in plant physiology have remained largely unknown because of a lack of mutants. Recent papers from two groups have shed new light on the function of two different MAP kinases. The Arabidopsis MPK4 gene appears to negatively regulate salicylic acid-mediated defense responses and positively regulate jasmonic acid-induced responses. The tobacco SIPK gene (orthologous to Arabidopsis MPK6) appears to positively regulate programmed cell death. |
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