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Impact of phyto-oxylipins in plant defense
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Abstract
Phyto-oxylipins are metabolites produced in plants by the oxidative transformation
of unsaturated fatty acids via a series of diverging metabolic pathways. Biochemical
dissection and genetic approaches have provided compelling evidence that these oxygenated
derivatives actively participate in plant defense mechanisms. During the past decade,
interest in this field was focused on the biosynthesis of jasmonic acid (one branch
of C18 polyunsaturated fatty acid metabolism) and on its relationship to the other
plant defense-signaling pathways. However, recently, antisense strategies have revealed
that oxylipins other than jasmonates are probably also essential for the resistance
of plants to pathogens.