Fig. 5.

Assembly mechanisms across different phylogenetic groups (bins), and their links to saponin accumulation and environmental factors. The relative abundance, relative importance of stochastic process, as well as relative abundances of abundant species, plant pathogens and undefined saprothophs were displayed with barplot. Phylogenetic signals for each groups were showed using heatmap. Community compositions of each groups were also displayed in our figure. Wilcoxon rank sum test. *, P < 0.05; **, P < 0.01; ***, P < 0.001