TABLE 2.
Results of selection experiments
| Limiting nutrient
|
||||||
|---|---|---|---|---|---|---|
| Competitors | Glucose (%) | n | Maltose (%) | n | Succinate (%) | n |
| lacI+ vs. lacI− | 10.28 ± 0.33 | 8 | 1.60 ± 0.17 | 7 | 9.69 ± 1.04 | 6 |
| lacI− ΔlacZ vs. lacI− | 8.31 ± 0.60 | 4 | 3.17 ± 0.25 | 3 | 5.95 ± 0.56 | 4 |
| lacI− ΔlacY vs. lacI− | 6.60 ± 0.79 | 4 | 5.83 ± 0.30 | 4 | 9.06 ± 1.05 | 4 |
| lacI+ vs. lacI− ΔlacZ | 3.43 ± 0.63 | 3 | −2.54 ± 0.28 | 5 | 3.05 ± 0.16 | 3 |
| lacI+ vs. lacI− ΔlacY | 6.39 ± 0.08 | 2 | 6.09 ± 0.31 | 4 | 2.04 ± 0.33 | 4 |
| lacI− ΔRBS vs. lacI− | 10.89 ± 0.78 | 4 | 2.13 ± 1.06 | 4 | 9.76 ± 2.50 | 3 |
| lacI+ vs. lacI− ΔRBS | −0.06 ± 0.61 | 2 | 0.08 ± 0.28 | 3 | 0.18 ± 0.17 | 2 |
| lacI−vs. lacI−lacZ·ssrA | 0.25 ± 0.24 | 3 | 5.07 | 1 | 5.60 ± 0.02 | 2 |
| lacI+ vs. lacI−lacZ·ssrA | 10.29 ± 0.32 | 2 | — | 0 | 15.28 | 1 |
| Competitors | Glucose + 50 μm IPTG | n | ||||
| lacI+ vs. lacI− | 0.29 ± 0.17 | 3 | ||||
The strain on the left is more fit by the percentage amount listed ± the standard error of the mean.