TABLE 4.
Correlation between production of ALS84 and hydroxamate siderophores by strain K84 and its mutants.
| Strain | Zone of inhibition due to ALS84 inhibitory activity (cm)a | Production of hydroxamate siderophores (A520)b |
|---|---|---|
| K84 | 2.0 | 0.14 |
| M8-10 | <0.01 | <0.01 |
| M8-12 | 1.0 | 0.16 |
| M9-22 | 0.4 | 0.06 |
| M11-11 | 0.4 | 0.04 |
| M12-22 | <0.01 | <0.01 |
| K84::8-10 | <0.01 | <0.01 |
| M8-10(pCOM8-10) | 2.0 | 0.14 |
a
Measured on MG medium as the diameter of the zones of inhibition of growth of NT1 caused by the indicated producer strain as described in Materials and Methods.
b
Assessed using the Csàky assay as described in Materials and Methods and footnotes to Table 2. Values represent the averages from two independent experiments. A520, absorbance at 520 nm.