FIG 6.

Complementation of the 35000HPΔrelAΔspoT mutant strain by dksA. Percent survival of mid-log-phase strain 35000HP(pACYC177), strain 35000HPΔrelAΔspoT(pACYC177), and strains 35000HPΔrelAΔspoT(pCH30) (pCH30 is the relA spoT double complementation plasmid) and 35000HPΔrelAΔspoT(pCH24) (pCH24 is the dksA complementation plasmid), following incubation with 0.2 mM or 2 mM H₂O₂ for 1 h. All values for percent survival were calculated as follows: (geometric mean CFU after treatment/geometric mean before treatment) × 100. The data are means plus SD from five independent experiments. *, P ≤ 0.05.