Fig. 7

LEfSe and correlation analysis of endophytic fungi in different parts of C. pilosula under drought stress. a–c Cladogram showing remarkably enriched fungal taxa in leaf (a), stem (b), and root (c) parts. Phylum, class, order, family, and genus levels are listed in order from the inside to the outside of the cladogram. Small circles with different colors in the diagram denote enrichment taxa, while yellow circles represent taxa with no significant differences in different parts. Each circle diameter is proportional to the abundance of taxon. d–f Correlation heatmap of the relationship between the abundances of enriched fungal taxa (the LDA significance threshold of 2.0 or greater) and the contents of pharmacological components in leaf (d), stem (e), and root (f) parts. Asterisks denote significant correlation based on Spearman’s analysis (**P < 0.01; *P < 0.05). CK untreated group, DT drought treatment group