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Vitis vinifera Canes, a New Source of Antifungal Compounds against Plasmopara viticola, Erysiphe necator, and Botrytis cinerea

Authors
Schnee, Sylvain
Voinesco, Francine
Dubuis, Pierre-Henri
Gindro, Katia
Published in Journal of Agricultural and Food Chemistry. 2013, vol. 61, no. 23, p. 5459-5467
Abstract Methanolic and ethanolic crude extracts of Vitis vinifera canes exhibited significant antifungal activity against the three major fungal pathogens affecting grapevines, Plasmopara viticola, Erysiphe necator and Botrytis cinerea. The active extracts were analyzed by LC-PDA−ESI-MS, and selected compounds were identified. Efficient targeted isolation using medium-pressure liquid chromatography afforded six pure constituents in one step. The structures of the isolated compounds were elucidated by NMR and HRMS. Six identified compounds (ampelopsin A, hopeaphenol, trans-resveratrol, ampelopsin H, ε-viniferin, and Evitisin B) presented antifungal activities against P. viticola. ε-Viniferin also exhibited a low antifungal activity against B. cinerea. None of the identified compounds inhibited the germination of E. necator. The potential to develop a novel natural fungicide against the three major fungal pathogens affecting V. vinifera from viticulture waste material is discussed.
Keywords Vitis viniferaWood extractLC-PDA−ESI-MSAntifungal activityAmpelopsin AHopeaphenolTrans-resveratrolAmpelopsin Hε-viniferinE-vitisin B
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Other version: http://pubs.acs.org/doi/abs/10.1021/jf4010252
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SCHNEE, Sylvain et al. Vitis vinifera Canes, a New Source of Antifungal Compounds against Plasmopara viticola, Erysiphe necator, and Botrytis cinerea. In: Journal of Agricultural and Food Chemistry, 2013, vol. 61, n° 23, p. 5459-5467. https://archive-ouverte.unige.ch/unige:31161

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Deposited on : 2013-11-20

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