Fig. 2From: Transcriptome and metabolome analysis to reveal major genes of saikosaponin biosynthesis in Bupleurum chinensePCA score plot of organs and numbers of potential markers for each. PCA score plots were derived from metabolite ions acquired from ESI+ and ESI- modes (A). Potential markers were selected by comparing quantitative differences of mass ions in ESI+ and ESI- modes (B) between root and stem, between root and flower, and between root and leaf. F, flower; L, leaf; R, root; and S, stemBack to article page