Abstract

Upon investigating anthocyanin and proanthocyanidin (PA) biosynthesis in blackberry fruits, we newly isolated an UDP-glucose: flavonoid 3-O glycosyltransferase (UFGT) gene (Accession No. JF764808), designated as RuGT1. It contained the typical signature motif of glycosyltransferases and with high homology to those of UDP-glucose: anthocyanidin 3-O glycosyltransferases. However, its expression patterns were coordinated with PA content along the maturation of blackberry fruits. Together with other recent advances in the plant PA metabolite research, RuGT1 could be deduced as a candidate PA-related glycosyltransferase.

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