关键词: 类黄酮, 生物合成, UDP–糖基转移酶, 生物学功能

Abstract: Flavonoids are important polyphenols for human diet and ornamental horticulture. Flavonoids attract attention for their wide range of biological activities and important biological functions. Uridine diphosphate glycosyltransferases（UGT） catalyze the final step of flavonoid biosynthesis to form various glycoside derivatives. Recently，with the development of plant genomics，many flavonoid biosynthesis related UGTs were analyzed and identified. Here，research progress on plant UGTs involved in flavonoids glycosylation modification was summarized from biochemical and molecular biological points of view. Important evidence illustrating enzymatic activities of flavonoid biosynthesis related-UGTs，functional characterization，as well as bioengineering of flavonoids with key UGTs were listed，which may provide theoretical foundation for regulation on flavonoid biosynthesis in the future.

Key words: flavonoid, biosynthesis, UDP-glycosyltransferase, biological function