Table 6.
Effects of pH and phosphate on the expression of T3SS genes in Edwardsiella ictaluri
| Medium | Fold change for target transcripta: |
||||||
|---|---|---|---|---|---|---|---|
| escB | escC | eseH | eseI | esrA | esrB | esrC | |
| MM19, pH 5.5 | +3.2 | +6.2** | +1.1 | −1.1 | −2.5 | −2.0 | −5.0* |
| MMP, pH 7.0 | +1.4 | −1.7 | +2.1 | +3.7 | −1.7 | −1.4 | −2.5 |
| MMP, pH 5.5 | +27.5** | +7.3** | +28.6** | +8.1 | +2 | −1.4 | +3.1 |
a
Values are the fold increase or decrease in transcription of the T3SS genes relative to expression in E. ictaluri cultured in MM19, pH 7.0. Asterisks indicate a significant change in expression relative to MM19 at pH 7: *, P ≤ 0.01; **, P ≤ 0.001.