Progress of Anthocyanin Biosynthesis and Regulation from Purple Pepper ( Capsicum Annuum L . )

Anthocyanin is a water-soluble pigment, is a class of secondary metabolites, and it belongs to the flavonoid polyphenols. The peel is purple, which caused by the anthocyanin accumulation, so the purple pepper is loved by more and more consumers by high nutritional value and health effects. With the deepening of research about anthocyanin biosynthetic pathways in plants, some research of this aspect are carried out in the purple pepper. This paper mainly discuss the biosynthetic pathway of anthocyanins in purple pepper, and the research progress of the transcription factors that involved in the regulation and the effects of the external environment, which is helpful to have a better understanding of the mechanism of anthocyanin biosynthesis and provide a theoretical reference for the breeding of purple pepper varieties.