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Annotation of Plant Gene Function via Combined Genomics, Metabolomics and Informatics
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Jasmonate biochemical pathway.

Aurélie Gfeller1, Lucie Dubugnon, Robin Liechti

  • 1Gene Expression Laboratory, Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, Biophore, CH-1015 Lausanne, Switzerland.

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Summary
This summary is machine-generated.

Jasmonates are crucial plant regulators derived from fatty acids. Their synthesis and diverse derivatives control gene expression, wound responses, and plant development.

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Area of Science:

  • Plant Biochemistry
  • Molecular Biology
  • Plant Physiology

Background:

  • Jasmonates are key regulators in plants, derived from fatty acids.
  • They play vital roles in wound responses and plant development.
  • Jasmonate synthesis involves specific enzymes and occurs in different cellular compartments.

Purpose of the Study:

  • To elucidate the biosynthetic pathway of jasmonates.
  • To understand the roles of jasmonates in plant processes.
  • To explore the diversity and functions of jasmonate derivatives.

Main Methods:

  • Lipoxygenase-catalyzed oxygen addition to alpha-linolenic acid initiates synthesis.
  • Allene oxide synthase (AOS) forms an allene oxide intermediate.
  • Enzyme-guided cyclization produces 12-oxophytodienoic acid (OPDA) in plastids, with further metabolism in peroxisomes.

Main Results:

  • OPDA is converted to jasmonic acid (JA) and other derivatives, including jasmonoyl-isoleucine (JA-Ile).
  • JA-Ile is a major biologically active jasmonate.
  • Multiple jasmonate derivatives exist, each with specific functions.

Conclusions:

  • Jasmonate biosynthesis is a multi-step process involving distinct enzymes and cellular locations.
  • The diversity of jasmonates allows for fine-tuned regulation of plant responses.
  • Understanding jasmonates is critical for comprehending plant immunity, development, and signaling.