FIG. 6.

Deletion of the type 1 fimbrial operon of CFT073 fim L-ON and its effect on motility. Motilities of wild-type (WT) CFT073 (A), CFT073 fim L-ON (B), and CFT073 fim L-ON ΔfimAICDFGH (fimA-H) (C) in soft agar are shown. Standardized cultures of each strain were stabbed into 0.25% soft agar plates and incubated for 16 h at 30°C. (D) Black bars represent the average diameters of swimming (in mm) of triplicate motility plates. Error bars represent the SEM. Significant differences in motility (comparing the wild type to fim L-ON and fim L-ON ΔfimAICDFGH) were determined using an unpaired Student's t test with Welch correction (Instat; GraphPad). *, P < 0.0001.