Fig. 6

Resistance evaluation of Xanthomonas citri ssp. citri (Xcc). a The expression level of the CsLOB1 gene of VIGS plant. The amount of lob transcript was normalized to that of the actin gene in the same plants, the average expression in control plants infected with pCLBV201-wt was considered 1.0, and the normalized expression in plants infected with pCLBV201-lob369 was relative to the average of the control plants. b The symptoms of leaves inoculated with Xcc, circled in red color are the treated group that inoculated with pCLBV201-lob376, control group that inoculated with pCLBV201-wt. c The form of canker bacteria on a plate. 1–9: degree of dilution (1–9 represent: 1 × 5⁻¹, 1 × 5⁻², 1 × 5⁻³, 1 × 5⁻⁴, 1 × 5⁻⁵, 1 × 5⁻⁶, 1 × 5⁻⁷, 1 × 5⁻⁸, 1 × 5⁻⁹). d The lesion area of leaves inoculated with Xcc. e The disease index of leaves inoculated with Xcc. f The content of leaves inoculated with Xcc. Bars represent standard deviation values, statistical significance was determined using student’s t-test (*P < 0.05, **P < 0.01)