Table 4.
In vivo competitive colonization
| Coinjection |
mrxA strain |
mrxH strain |
||
|---|---|---|---|---|
| CFU/IJa | mrxA mutant/ wtb | CFU/IJa | mrxH mutant/ wtb | |
| IJs colonized with individual strains | 163.8 (3.7) | 2.7% | 168 (4.3) | 2.3% |
| Aposymbiotic IJs + (wt:mutant strains) | 131.4 (9.3) | 20.7% | 129.9 (6.8) | 1.4% |
a
Total CFU on LB agar supplemented with 50 μg ml−1 ampicillin. Data are shown as means (SEs). Each value is derived from at least 20 replicate data points.
b
Data shown are percentages of IJ progeny colonized with the mutant strain when a mixture of the wild-type (wt) strain and the indicated mutant strain was injected.