MavR promotes expression of genes encoding flagella. (A) RNAseq data showing flagella and motility gene expression in ΔmavR compared to WT grown aerobically. The dotted line indicates 2-fold change, N = 3. (B) RT-qPCR of flhD in WT and ΔmavR. (C) RT-qPCR of indicated genes identified as differentially expressed in the RNAseq data set in WT, ΔmavR and ΔmavR + pGEN-mavR. WT and ΔmavR carry the empty vector, N = 3. (D) Western blot of FlhD::His and FlhC::His in WT and ΔmavR. DnaK is the loading control. (E) Quantification of FlhD::His and FlhC::His expression in WT and ΔmavR,N = 3. (F) RT-qPCR of flhD/flhD::his and fliK in WT, ΔmavR and ΔmavR + pUCP24-mavR. WT and ΔmavR carry the empty vector, N = 3. (G) Quantification of WT, ΔmavR, and ΔmavR+ pGEN-mavR motility assays, N = 3. Bars represent the mean and error bars indicate SEM; ** P < 0.01, *** P < 0.001, † P < 0.1 (Student's two-sample t-test).