Functional characterization of a UDP-glucose:flavonoid 3-O-glucosyltransferase from the seed coat of black soybean (Glycine max (L.) Merr.)

An UDP-glucose:flavonoid 3-O-glucosyltransferase cDNA (UGT78K1) was isolated from the seed coat of black soybean. Transfer of GmUF3GT into the Arabidopsis mutant ugt78d2 restored anthocyanin and flavonol biosyntheses.