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.
Highlights
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
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
Summary
Glycosylation is one of the mechanisms for plants in perceive environmental changes both in and outside plant tissues. This is achieved by a group of enzymes named glycosyltransferases (GTs) (Bowles et al, 2006). They are capable of transferring sugars to a wide range of acceptors, such as hormones, secondary metabolites, biotic or abiotic chemical or toxins in the environment. We briefly introduced our newly isolated RuGT1, which might be a proanthocyanidin-related glycosyltransferase in blackberry fruits, further our standing in the PA biosynthesis pathway
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