Fig. 7

The schematic diagram of polyphyllin biosynthesis. The left diagram indicates the variations in polyphyllin content in P. polyphylla. The scale bar on the bottom of circle represents the polyphyllin content. The cubic heatmap in the middle indicates well-supported PBGs in the polyphyllin-related co-expression module and in spatiotemporal expression clusters. The scale bar on the bottom of the cube represents the expression level of biosynthetic genes. The right diagram indicates the transcriptional factors and transporters which may be associated polyphyllin biosynthesis and accumulation