Different light-response patterns of coloration and related gene expression in red pears (Pyrus L.)

The expression patterns of genes encoding enzymes indicated that ANS and UFGT were decisive genes involved in anthocyanin biosynthesis for red-skinned pears, and the varying expression of these genes led to coloration differences observed between light-response patterns. The expression patterns of transcription factors indicated that the MYB10, bHLH33, and WD40 genes are involved in differential regulatory mechanisms of anthocyanin biosynthesis and coloration patterns between light-response patterns. The expression of light-responsive genes indicated that the expressions of HY5, PhyA, COP1, DET1, and PIF3 genes are involved in the differential regulatory mechanisms of anthocyanin biosynthesis and coloration patterns between light-response patterns. The results provide an important reference for studying the molecular mechanism of light response and coloration in red pear and lay the foundation for future studies on red pear coloration research.