Table 2. Diversity indices of the communities on leaf surface showed different disease severity.

The data are presented as the mean ± SE, a P value of <0.05 was considered to be statistically significant. The same letter indicates that there were no differences between groups, and different letters (a, b, c) indicate statistically significant differences.

Group	Richness	Shannon index	Inverse Simpson index	Chao1
L1	182.25 ± 4.53a	1.23 ± 0.03ab	2.03 ± 0.08ab	279.47 ± 10.47a
L2	217.00 ± 20.84a	1.87 ± 0.19c	3.12 ± 0.53c	283.08 ± 23.85a
L3	192.75 ± 27.19a	1.62 ± 0.16bc	2.64 ± 0.18bc	290.35 ± 22.21a
L4	110.25 ± 6.85b	0.90 ± 0.09a	1.61 ± 0.10a	181.91 ± 15.71b