Metabolic Pathways and Molecular Regulatory Mechanisms of Fruit Color Change During Greening Stage of Peppers (<i>Capsicum annuum</i> L.).

ABSTRACT: Our multi-omics investigation of pepper fruit coloration dynamics demonstrates that the coordinated regulation of flavonoid accumulation and chlorophyll retention underpins the distinct pigmentation patterns between dark green (XHB) and light green (QL2017) cultivars. Through the integrated analysis of three developmental stages (10-30 DPA), we identified 989 differentially accumulated metabolites (DAMs) and 810 differentially expressed genes (DEGs), with flavonoid biosynthesis, phenylpropanoid metabolism, and chlorophyll turnover pathways pinpointed as central regulatory hubs. Notably, key metabolites such as quercitrin, kaempferol-3-O-rhamnoside, and cinnamic acid were significantly enriched in dark green fruits (XHB), coinciding with enhanced antioxidant activity and delayed chlorophyll

SUBMITTER: Wei M 

PROVIDER: S-EPMC12111481 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature