Divinyl ether fatty acid synthesis in late blight-diseased potato leaves.

Détails

ID Serval
serval:BIB_37F5C658F5A1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Divinyl ether fatty acid synthesis in late blight-diseased potato leaves.
Périodique
Plant Cell
Auteur(s)
Weber H., Chételat A., Caldelari D., Farmer E.E.
ISSN
1040-4651 (Print)
ISSN-L
1040-4651
Statut éditorial
Publié
Date de publication
1999
Volume
11
Numéro
3
Pages
485-494
Langue
anglais
Résumé
We conducted a study of the patterns and dynamics of oxidized fatty acid derivatives (oxylipins) in potato leaves infected with the late-blight pathogen Phytophthora infestans. Two 18-carbon divinyl ether fatty acids, colneleic acid and colnelenic acid, accumulated during disease development. To date, there are no reports that such compounds have been detected in higher plants. The divinyl ether fatty acids accumulate more rapidly in potato cultivar Matilda (a cultivar with increased resistance to late blight) than in cultivar Bintje, a susceptible cultivar. Colnelenic acid reached levels of up to approximately 24 nmol (7 microgram) per g fresh weight of tissue in infected leaves. By contrast, levels of members of the jasmonic acid family did not change significantly during pathogenesis. The divinyl ethers also accumulated during the incompatible interaction of tobacco with tobacco mosaic virus. Colneleic and colnelenic acids were found to be inhibitory to P. infestans, suggesting a function in plant defense for divinyl ethers, which are unstable compounds rarely encountered in biological systems.
Mots-clé
Ethers/metabolism, Fatty Acids/biosynthesis, Fatty Acids, Monounsaturated/metabolism, Fatty Acids, Unsaturated/metabolism, Lipoxygenase/metabolism, Oxidation-Reduction, Phytophthora, Plant Diseases, Plant Leaves/metabolism, Plants, Toxic, Solanum tuberosum/metabolism, Tobacco/metabolism, Vinyl Compounds
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 21:05
Dernière modification de la notice
20/08/2019 14:26
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