Flavonoids and phenolic acids play roles in grapevine defence against pathogens causing trunk diseases (GTDs). Rutin is a major flavonoid vegetative organs of the grapevines, this compound, unlike other flavonoids, non-toxic non-oxidizable. was assayed vitro vivo two Botryosphaeriaceae taxa. The limited bioavailability compound circumvented by conjugation with stevioside, glycoside obtained fro...