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


Autoria(s): Weber H.; Chételat A.; Caldelari D.; Farmer E.E.
Data(s)

1999

Resumo

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.

Identificador

http://serval.unil.ch/?id=serval:BIB_37F5C658F5A1

isbn:1040-4651 (Print)

pmid:10072406

doi:10.1105/tpc.11.3.485

isiid:000079506600015

Idioma(s)

en

Fonte

Plant Cell, vol. 11, no. 3, pp. 485-494

Palavras-Chave #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
Tipo

info:eu-repo/semantics/article

article