OmpR and T6SS-4 are required for survival after exposure to osmotic and cell envelope stresses.

(A) Survival to exposure to osmotic stress. Viable bacteria (relative to the initial input) of the indicated strain counted after exposure for 60 min. to 0.6 M Sucrose. (B) Survival to cell envelope stress. Highest 10-fold serial dilution for which colonies are observable on LB plates supplemented with 1% sodium deoxycholate after 24 hours of incubation at 28°C. p-values obtained using paired Student’s t-test analyses are indicated (NS [non significant], p>0.05; ***, p≤0.0001).