Stress resistance of stationary phase TY cultures. Stress resistance was analyzed at 48 and 72 h after inoculation. (A) Oxidative stress (10 mM H2O2 30 min), (B) NaCl 2.5 M 60 min, (C) Heat stress 45°C 30 min. Strains displayed are the wild-type untreated control (white), rel
untreated control (black), the wild-type survival (gray) and the rel
mutant survival (shaded) under the indicated stress condition. Samples were plated in triplicate and the experiment was repeated independently.