Fig. 1

Summary of α diversity indices under different disease severities. The α diversity indices including shannon, Inv_simpson indice, Observed_richness and Chao1 in bacteria (a) and fungi (b). The data were analyzed based on a one-way ANOVA followed by Duncan’s multiple range test at p < 0.05. DM1, DM2 and DM3 represent the three disease severities of angular leaf-spot of cucumber, respectively. DM1 symptomatic-mild, DM2 symptomatic-moderate, DM3 symptomatic-severe