Table 2.

Comparison between light organ colonization levels achieved by V. fischeri ompU mutant OM3 and its parent ESR1 at different times after inoculationa

Time postinoculation (h)105 CFU/light organRatio of colonization effectiveness (CFU of ESR1/CFU of OM3)
ESR1OM3
245.10.95.7
394.22.41.8
414.20.49.3
602.01.02.0
727.83.52.2
Mean4.2
  • a In each of the five separate experiments, the number of CFU present in the inoculum of strain OM3 was between 1.2 and 1.6 times greater than that of strain ESR1. The total concentration of V. fischeri cells (OM3 or ESR1) in the inoculum of each experiment was between 2,000 and 4,700 CFU/ml of seawater.