Table 6.
Oxidative stress sensitivity of C. jejuni strains and constructs as measured by a disk diffusion assay.
| Strain |
aMean diam (mm) of zone of inhibition |
||
|---|---|---|---|
| H2O2 | Cumene hydroperoxide | Paraquat dichloride | |
| NCTC11168 | 22.5 | 32 | 11.5 |
| 11168 PkatA-cat OXR mutant | b6 | b24 | b6 |
| Δnth PkatA-cat OXR mutant | b6 | b25.5 | b6 |
aThe data are expressed as the diameters (in millimeters) of the zones of inhibition. Data are shown as the means of triplicate plates. The diameter of the disk itself is 6 mm, and therefore 6 mm indicates no obvious inhibition. bStatistically significant difference (p < 0.05) by t-test was observed between the mutant and wild type strains.