Insights into the Coloring Mechanism of Dark-Red and Yellow Fruits in Sweet Cherry through Transcriptome and Metabolome Analysis

The color of sweet cherry fruits is an important indicator their appearance and quality. That influences the purchasing desires consumers. We performed a multi-omics analysis two different colors (yellow “Bing Hu” dark-red “Hong Deng” fruits). A total 12 flavonoid differential metabolites, including hesperetin, rutin, quercetin, 18 structural genes, PAL, CHS, FLS, DFR, were identified. Possible key regulatory genes for second stage change (from green to yellow) identified as SBP, bHLH, WD40, bZIP, which regulated accumulation flavonoids, hesperetin naringenin. In addition, possible roles transcription factors, mainly MYB, AP2, WRKY, in third both also This study offers new insights into changes fruit coloration between yellow cherries, while metabolites lays molecular foundation future improvement breeding programs.