Fig 9. Comparison of differential gene expression in the double perRAperRB mutant with that in the single perRA and perRB mutants.

Expression of selected genes of the TonB-dependent transport cluster (A), involved in oxidative stress and redox homeostasis (B), in regulation and signaling (C), and in virulence (D) determined by RNASeq in the double perRAperRB mutant was compared to those in the single perRA mutant determined by Zavala-Alvarado et al. [19] and single perRB mutant (as determined in this study). Differential expression in each mutant strain was normalized with that in the WT strain. Gene names are indicated on the right. The Heat Map color from blue to red indicates low to high Log₂FC.