Our understanding of plant defensive mechanisms against herbivore and pathogen attack has significantly increased over the past decade. The complex cascade of defensive events is initiated and controlled by a network of interacting plant hormones. Especially, the conjugate of jasmonate and isoleucine is a major regulator which controls gene expression and production of secondary metabolites after (a)biotic challenges. This review offers a survey of both natural and synthetic mimetics of the natural hormone which can be used for a selective manipulation and the study of the plant's secondary metabolism.
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