TABLE 2.
Overnight colony formation by spores of various strainsa
| Mutant genotype (strain) | Titer (CFU/ml/OD600 unit)b |
|---|---|
| Wild type (PS832) | 1.3 × 108 |
| gerA (FB20) | 5.4 × 107 |
| gerB (FB60) | 1.6 × 108 |
| gerK (FB68) | 1.4 × 108 |
| gerA gerB (FB61) | 3.0 × 107 |
| gerA gerK (FB86) | 1.2 × 106 |
| gerB gerK (FB87) | 1.4 × 108 |
| gerA gerB gerK (FB72) | 4.0 × 104 |
| gerA gerB gerK yndDEF yfkQRT (FB85) | 4.0 × 104 |
a
Spores of various strains were heat activated in water and plated on LB agar, and colonies were counted after overnight incubation at 37°C.
b
Mean of two experiments. The titers from the two experiments were within 40% of each other, except in the case of spores from strains FB72 and FB85, where the titers varied 10-fold.