Fig. 1

Analysis of flavonoids C-glycosides contents and gene expression in Stenoloma chusanum. A Relative levels of flavonoids C-glycosides [vitexin (vit) and orientin (ori)] in S. chusanum. B Representative HPLC chromatograms of methanolic extracts of S. chusanum. C Mass spectrometric profiles of P1, P2, and standards. D Expression analysis of candidate genes in S. chusanum organs. (P1: orientin; P2: vitexin; MS: mass spectrometry; MS2: tandem mass spectrometry)