Integrated transcriptomics and metabolomics to reveal the regulatory mechanisms of flavonoid biosynthesis in Persicaria capitata under different nitrogen fertilization levels
Persicaria capitata is a perennial herb and one of the top ten authentic Miao medicinal plants in Guizhou province, China, with flavonoids serving as its primary bioactive components. Agricultural production practices have shown that nitrogen fertilizer application can reduce flavonoid accumulation in P. capitata, although the underlying molecular regulatory mechanism remains unclear.In this study, a pot experiment was performed to investigate the effects of different nitrogen treatments on the growth performance and yield of P. capitata. Moreover, the related changes in transcriptomic characteristics and metabolic profiles were also systematically analyzed.