Phenolics and Their Antifungal Role in Grapevine Wood Decay: Focus on the Botryosphaeriaceae Family
Langue
en
Article de revue
Ce document a été publié dans
Journal of Agricultural and Food Chemistry. 2012, vol. 60, n° 48, p. 11859 - 11868
American Chemical Society
Résumé en anglais
The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds ...Lire la suite >
The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum. A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.< Réduire
Mots clés
METABOLITES
INFECTION
Mots clés en anglais
Vitis vinifera
polyphenols
stilbenoids
antifungal activity
wood decay
Botryosphaeriaceae
ESCA-ASSOCIATED FUNGI
VITIS-VINIFERA L
DEFENSE-MECHANISM
BOTRYTIS-CINEREA
IDENTIFICATION
PATHOGENS
RESISTANCE
RESVERATROL
Origine
Importé de halUnités de recherche