TABLE 2.
Growth rates (μ) and doubling times (tD) of the WT strain and RU-1 grown under different oxygen and iron concentrations
| Strain | Parameter | Resulta under the following culture conditions |
||||
|---|---|---|---|---|---|---|
| 2% O2 and: |
0% O2 and 50 μM Fe citrate | 21% O2 and 50 μM Fe citrate | ||||
| 5 μM Fe citrate | 50 μM Fe citrate | 250 μM Fe citrate | ||||
| WT | μ (h−1) | 0.169 (±0.010) | 0.162 (±0.001) | 0.165 (±0.010) | 0.148 (±0.015) | 0.121 (±0.013) |
| tD (h) | 4.10 (±0.24) | 4.29 (±0.02) | 4.19 (±0.26) | 4.68 (±0.68) | 5.73 (±0.60) | |
| RU-1 | μ (h−1) | 0.167 (±0.003) | 0.158 (±0.001) | 0.149 (±0.019) | 0.124 (±0.003) | 0.090 (±0.002) |
| tD (h) | 4.16 (±0.07) | 4.40 (±0.00) | 4.64 (±0.59) | 5.60 (±0.14) | 7.70 (±0.17) | |
a
Values are the sample means of at least replicate cultures. Sample standard deviations are given in parentheses.