Fig. 5

Spearman correlation analysis between the soil properties, the phenotypes of fava beans, and the differential metabolites (A) and microbial genera (B). Statistically significant correlation was considered at P < 0.05. Asterisks indicate significance: P < 0.05 (*); P < 0.01 (**); P < 0.001 (***). Correlation coefficient was in proportion to the heatmap gradient