Phenolics and Their Antifungal Role in Grapevine Wood Decay: Focus on the Botryosphaeriaceae Family
Language
en
Article de revue
This item was published in
Journal of Agricultural and Food Chemistry. 2012, vol. 60, n° 48, p. 11859 - 11868
American Chemical Society
English Abstract
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 ...Read more >
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.Read less <
Keywords
METABOLITES
INFECTION
English Keywords
Vitis vinifera
polyphenols
stilbenoids
antifungal activity
wood decay
Botryosphaeriaceae
ESCA-ASSOCIATED FUNGI
VITIS-VINIFERA L
DEFENSE-MECHANISM
BOTRYTIS-CINEREA
IDENTIFICATION
PATHOGENS
RESISTANCE
RESVERATROL
Origin
Hal imported