MtvR expression affects E. coli and P. aeruginosa growth kinetics and survival to prolonged nutrient deprivation.

Growth curves in liquid LB medium supplemented with 0.1% L-arabinose (A, B) and survival in M9 minimal medium supplemented with 0.1% L-arabinose, at 37°C for 30 days (C, D), of (A, C) E. coli strains WT (circles), WT expressing MtvR (squares) or the Δhfq_Ec mutant (triangles), or (B,D) P. aeruginosa strains WT (circles), WT expressing MtvR (squares) or the WT strain with the hfq_Pa gene silenced (triangles).