Fig. 8.

V. fischeri ES114 aerobactin production confers a competitive advantage against V. harveyi when iron is limiting. Competition experiments between V. harveyi and either WT (black circles) or ΔiucABCD (white circles) V. fischeri ES114 under the indicated growth conditions. For each competition, the selection rate constant (24 h⁻¹) is plotted for the V. fischeri ES114 strain compared to V. harveyi. Error bars represent standard deviations of five biological replicates. Unpaired two-tailed t tests were performed comparing the V. harveyi/V. fischeri ES114 WT competition to the V. harveyi/V. fischeri ES114 ΔiucABCD competition for each growth condition. P values: ns ≥ 0.05, **** < 0.0001.