Metabolic and genetic analysis links TRITERPENE SYNTHASE 12 to oleanolic acid biosynthesis in grape berry wax.

ABSTRACT: Fruit surface cuticular waxes of grape berries are important in stress response and fruit quality. Despite extensive studies on the biosynthesis, regulation, and composition of fruit surface waxes, knowledge of the compositional variation and genetic mechanisms underlying grape berry cuticular wax formation remains limited. This study aimed to characterize grape berry cuticular wax composition and identify contributing genes. The wax composition of two grape cultivars ('Deckrot' and G1-7720) and their progeny shifted from aldehyde to fatty acid accumulation during ripening, while the composition was shown to influence Botrytis cinerea susceptibility. Alcohols and aldehydes contributed to the glaucous wax appearance, while the bioactive triterpene, oleanolic acid, was found to be the most a

SUBMITTER: Vervalle JA 

PROVIDER: S-EPMC12321741 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature