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. 2019 May 28;10:1157. doi: 10.3389/fmicb.2019.01157

FIGURE 1.

FIGURE 1

Rom-resistance phenotype, genetic analysis and construction of deletion mutants and clones. (A) The RomR clone shows no inhibition halo in the agar diffusion method with 100 μg Rom loaded on the filter disks. (B) Genetic organization of the divers oriented farR and farE genes and location of the single point mutation () in farR leading to an amino acid exchange (Cys116/Arg) in the FarR regulator protein in the RomR clone. (C) Illustration of farE deletion construction in HG001 and the RomR clone. For homologous double-cross recombination, pBASE6-ΔfarE containing approximately 1 kb upstream and downstream DNA sequences were used; ΔfarE positive clones were controlled by PCR and sequencing. (D) pCX30::farR is the farR complementation plasmid in which the transcription of the gene is xylose-inducible.