Impact of <i>luxI</i> deletion on competition in <i>Vibrio fischeri</i>.

<p>Percentage of luminescence colonies plated from mixed <i>V. fischeri</i> MJ1 (wild type) and MJ211 (<i>luxI</i> mutant) cultures subcultured daily for ten days. The starting ratio of MJ1 to MJ211 was either 1∶1 (Panel A) or 1∶9 (Panel B). Regardless of the initial ratio of wild type (MJ1) to mutant (MJ211) cells, the wild type lineage dominated the cultures within days suggesting the <i>luxI</i> gene represents a selective advantage independent of the bioluminescence phenotype. Average values from triplicate cultures are presented. Error bars represent standard deviation.