Basic helix–loop–helix (bHLH) proteins belong to one of the largest families involved in plant growth, development, signal transduction, and secondary metabolism. Although bHLH genes have been previously identified persimmon (Diospyros kaki), systematic studies not reported. A total 59 family members from “Xiaoguotianshi” transcriptome. These were clustered into 12 groups I XII based on their p...