Abstract
Jasmonates are naturally occurring signal compounds that regulate plant growth and development, and are involved in plant responses to several environmental stress factors. The mode of action of jasmonates has been investigated traditionally by analysis of the effects of exogenous application of these compounds, including identification of jasmonate-responsive genes and determination of their expression and responsive promoter elements. In addition, jasmonate biosynthesis has been studied by identification of biosynthetic enzymes, use of inhibitors and determination of endogenous jasmonate levels. Recently, several mutants defective in jasmonate biosynthesis and signaling have been isolated and their phenotypes shed new light on the role of jasmonates and jasmonate signaling in plant responses to pathogens, insects and ozone.
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