Table 2.

Effect of rpoS mutation on oxidative stress inP. aeruginosaa

Growth phase and phenotypeH2O2sensitivitybCatalase activity (U/mg of protein)
Mid-log
 RpoS+ 25.8 ± 0.7116 ± 8
 RpoS 25.5 ± 2.871 ± 7
Stationary
 RpoS+ 29.8 ± 0.21,206 ± 41
 RpoS 36.3 ± 0.9476 ± 21
  • a Values are means ± standard deviations.

  • b Zone of inhibition was measured in millimeters.