Control efficiency of strain NEAU-HV9 against R. solanacearum. A, tomato seedlings were inoculated with sterile water (CK 1); B, tomato seedlings only were inoculated with R. solanacearum (CK 2); C, tomato seedlings were pre-inoculated with suspension (107 cfu mL−1) of NEAU-HV9 and then inoculated with R. solanacearum (TR 1); D, tomato seedlings were pre-inoculated with suspension (108 cfu mL−1) of NEAU-HV9 and then inoculated with R. solanacearum (TR 1); E, tomato seedlings were pre-inoculated with suspension (109 cfu mL−1) of NEAU-HV9 and then inoculated with R. solanacearum (TR 1); F, actinomycin D at the concentration 1 × MIC (TR 2); G, actinomycin D at the concentration 2 × MIC (TR 2).