TABLE 2.
Swarm expansion on 0.3% agara
| Strain | Genotype | Swarm expansion (μm/min) |
|---|---|---|
| DK1622 | Wild type | 1.84 ± 0.40 |
| VP1066 | rasA | 0.49 ± 0.17 |
| VP1145 | rasA ΔpilA | 0.50 ± 0.17 |
| VP1146b | rasA aglB1 | 0.07 ± 0.10 |
| DK3468 | dsp | 0.48 ± 0.10 |
| DK10410 | ΔpilA | 0.37 ± 0.12 |
a
Mid-exponential-phase cells were spotted on a rich medium (Casitone-yeast extract) containing low-percentage (0.3%) agar. The radius of each spot was measured at regular intervals for 94 hours. Results shown are for threefold replicate experiments. See reference 27 for A− S+ swarm expansion data.
b
The aglB1 point mutation causes an A-motility defect.