Distributions of the endophytic microbiota in peach tree roots (A) and twigs (B) within a nonmetric multidimensional scaling (NMDS) ordination. Shannon diversity indices of the microbiota of peach tree roots (C) and twigs (D) based on 16S rRNA sequences. The analysis was conducted based on the Bray-Curtis dissimilarity at OTU level. Statistical comparisons between groups were conducted by one-way ANOVA test. *, P ≤ 0.05; **, P ≤ 0.01; ***, P ≤ 0.001; U, uninoculated; M, mock; I, inoculated with A. tumefaciens; H, “Honggengansutao”; O, “Okinawa.”