Dual mode of action of grape cane extracts against Botrytis cinerea

Crude extracts of Vitis vinifera canes represent a natural source of stilbene compounds with well characterized antifungals properties. In our trials, exogenous application of a stilbene extract (SE) obtained from grape canes on grapevine leaves reduces the necrotic lesions caused by Botrytis cinere...

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Bibliographic Details
Published inJournal of agricultural and food chemistry Vol. 67; no. 19; pp. 5512 - 5520
Main Authors de Bona, Gicele Sbardelotto, Adrian, Marielle, Negrel, Jonathan, Chiltz, Annick, Klinguer, Agnès, Poinssot, Benoît, Heloir, Marie-Claire, Angelini, Elisa, Vincenzi, Simone, Bertazzon, Nadia
Format Journal Article
LanguageEnglish
Published American Chemical Society 2019
Subjects
Environmental Sciences
Life Sciences
Vegetal Biology
stilbenes
Botrytis cinerea
grapevine
cane extract
defense response
resveratrol
phytoalexin
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Summary:Crude extracts of Vitis vinifera canes represent a natural source of stilbene compounds with well characterized antifungals properties. In our trials, exogenous application of a stilbene extract (SE) obtained from grape canes on grapevine leaves reduces the necrotic lesions caused by Botrytis cinerea. The SE showed to possess a direct antifungal activity by inhibiting the mycelium growth. The activation of some grapevine defense mechanism was also investigated. H2O2 production and activation of mitogen-activated protein kinase (MAPK) phosphorylation cascades as well as accumulation of stilbenoid phytoalexins were explored on grapevine cell suspension. Moreover, the transcription of genes encoding for proteins affecting defense responses was analyzed on grapevine plants. The SE induced some grapevine defense mechanisms including MAPK activation, and the expression of pathogenesis-related (PR) genes and of a gene encoding the glutathione-S-transferase 1 (GST1). By contrast, treatment of grapevine leaves with SE negatively regulates de novo stilbene production.
ISSN:0021-8561
1520-5118
DOI:10.1021/acsjafc.8b07098