Fig.1

Phylogenetic tree of endophytic bacteria from Vernicia fordii Numbers at branch nodes represent bootstrap support values (based on 1 000 replicates); only values ≥50% are shown."

Fig.2

Phosphate solubilizing halo formation by bacterial strains"

Table 1

Phosphate solubilization capacity and enzyme activities of bacterial strains"

Fig.3

Comparison of nitrogen-fixing halos among strains"

Fig.4

Nitrogen-fixing and IAA-producing abilities of the strains A: Nitrogen content of strains; B: IAA content of strains. Error bars represent standard error (n=3). Different lowercase letters indicate significant differences among treatments (P<0.05)."

Fig.5

Siderophore-producing capacity of the strain"

Fig.6

Antagonistic activity of bacterial strains against Fusarium oxysporum"

Fig.7

Colonization status in Vernicia fordii roots DAPI: Staining with 4', 6-diamidino-2-phenylindole for showing root cell nuclei; GFP: Fluorescence for showing bacterial colonization; Merged: Merged with DAPI staining and fluorescence for distinguishing plant tissue and bacteria."

Fig.8

Growth performance of Vernicia fordii (upper) and Vernicia montana (lower) after inoculation with endophytic bacteria For each panel, the left side represents the treatment group and the right side represents the control group."

Fig.9

Comparison of growth indices of Vernicia fordii and Vernicia montana after inoculation A: Plant height; B: Fresh weight; C: Dry weight; D: Relative chlorophyll content. Error bars represent standard error (n=30); Different lowercase letters indicate significant differences among treatments (P<0.05)."

Fig.10

Effects of different strain treatments on root morphology"

Table 2

Effects of different bacterial strains on root morphological development and rhizosphere ACC content"

Table 3

Effects of different bacterial strains on nutrient accumulation in Vernicia fordii and Vernicia montana"

Fig.11

Effects of different bacterial strains on nutrient accumulation (N, P, K) in Vernicia fordii and Vernicia montana A: Vernicia fordii, B: Vernicia montana. Color intensity indicates the relative content level of elements."

Fig.12

Effects of endophytic strains on soil enzyme activities in the rhizosphere of Vernicia fordii"

Fig.13

Effects of different bacterial strain treatments on rhizosphere soil enzyme activities of Vernicia fordii and Vernicia montana A: Acid phosphatase; B: Phytase. Different lowercase letters indicate significant differences among treatments (P<0.05)."

Table 4

Principal component load matrix"