Genome-Wide Analysis and Functional Characterization of the UDP-Glycosyltransferase Family in Grapes

Grape (Vitis vinifera) produces a variety of secondary metabolites, which can enhance nutrients and flavor in fruit wine. Uridine diphosphate-glycosyltransferases (UGTs) are primarily responsible for the availability metabolites by glycosylation modification. Here, total 228 putative UGTs were identified V. vinifera, VvUGTs clustered into 15 groups (A to O) unevenly distributed on 18 chromosomes. Diverse VvUGT members from 12 transcribed, they responded different external stresses. More than 72% expressed at one or more stages grape development, expression levels 34 increased gradually with ripening. The may be involved synthesis accumulation flavonoid glycosides, glycosidically bound volatiles, stilbenes. These results will provide guidance further research functions regulating mechanisms UGT genes.