Phenols and Stilbene Polyphenols in the Wood of Esca-Diseased Grapevines
vinifera in response to fungal infection, UV irradiation, and incubation by chemicals, have been detected in the wood
of healthy as well as in the brown-red wood of esca-diseased grapevines. Brown-red wood is considered an initial
symptom of esca in grapevine. Resveratrol was the predominant component although e-viniferin was also accumulated
in appreciable quantities. The biological significance of the production of resveratrol and e-viniferin is discussed.
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