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Innes RW: Mapping out the roles of MAP kinases in plant defense. Trends Plant Sci. 2001 Sep;6(9):392-4.
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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