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. 2016 Apr 22;6:24856. doi: 10.1038/srep24856

Figure 1. The antibacterial activity of volatile organic compounds (VOCs) produced by Bacillus amyloliquefaciens SQR-9 on agar medium and in soil against Ralstonia solanacearum.

Figure 1

(A) Antibacterial activity of VOCs up to five days on agar medium, (B) antibacterial activity of VOCs produced by different inoculum concentrations of SQR-9, (C) antibacterial activity of VOCs produced by SQR-9 on agar medium against Ralstonia solanacearum in infested soil, (D) antibacterial activity of VOCs produced by SQR-9 in natural soil and sterilized soil against Ralstonia solanacearum inoculated on agar medium, (E) antibacterial activity of VOCs of SQR-9 on agar medium in divided plate assay. Control 1 = without the inoculation of strain SQR-9 (plates were not sealed); Control 2 = without the inoculation of strain SQR-9; Control 3 = Escherichia coli DH5α in place of strain SQR-9; Control 4 = activated charcoal was placed between two compartments of divided plates. All control treatments were inoculated with Ralstonia solanacearum and sealed with parafilm except control 1 and incubated at 30 °C for three days. Error bars indicate standard deviations of three replicates and different letters describe significant differences at P = 0.05 within the same data group.