TABLE 2.
Effect of fptA and orbA mutations on siderophore production in B. cenocepacia Pc715j
| Strain | Amta (μg/ml of supernatant)
|
||
|---|---|---|---|
| Salicylic acid | Ornibactin | Pyochelin | |
| Pc715j | 0.1 ± 0.01 | 23.5 ± 8.2 | 4.8 ± 2.1 |
| Pc715j fptA::tp | 0.5 ± 0.1b | 26.0 ± 1.3 | 0.1 ± 0.2b |
| Pc715jorbA::tp | 0.3 ± 0.3 | 5.5 ± 2.5b | 3.3 ± 2.2 |
a
Values are the means ± standard deviations for triplicate assays. Assays were performed three times with similar results.
b
Significantly different from results for Pc715j (P < 0.05) by analysis of variance, Dunnett multiple-comparisons test.