Plant oxylipins form a constantly growing group of signaling molecules that comprise oxygenated fatty acids and metabolites derived therefrom. In the last decade, the understanding of biosynthesis, metabolism, and action of oxylipins, especially jasmonates, has dramatically improved. Additional mechanistic insights into the action of enzymes and insights into signaling pathways have been deepened for jasmonates. For other oxylipins, such as the hydroxy fatty acids, individual signaling properties and cross talk between different oxylipins or even with additional phytohormones have recently been described. This review summarizes recent understanding of the biosynthesis, regulation, and function of oxylipins.

Department of Plant Biochemistry Albrecht von Haller Institute for Plant Sciences and Goettingen Center for Molecular Biosciences University of Goettingen 37077 Goettingen Germany

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Laboratory of Growth Regulators and Centre of the Region Haná for Biotechnological and Agricultural Research Palacký University CZ 78371 Olomouc Czech Republic On leave from Department of Molecular Signal Processing Leibniz Institute of Plant Biochemistry D 06120 Halle Germany

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