Table 3.

Colonization effectiveness of ompU mutant strain in competition with the wild typea

Expt% Strain OM3 (ompU)Ratiob
In inoculumIn colonization
163670.94
254411.23
365800.73
447520.90
Mean ± SD57 ± 860 ± 170.95 ± 0.21
  • a In each of four separate colonization experiments, an inoculum was prepared by mixing cells of strain OM3 and its wild-type parent in a proportion of approximately 1:1. The percentage of OM3 cells in this inoculum and in the resulting symbiotic population 24 to 48 h after inoculation was determined as described in the text.

  • b Ratio = percent in inoculum/percent in colonization.