Figure 7.

Overexpression of Escherichia coli TolQ induces filamentation in other Gram-negative species. Stained preparations of E. coli, Cronobacter muytjensii, and Enterobacter amnigenus strains bearing a plasmid carrying the tolQ gene under the control of the pBAD promoter grown for 24 h at 37°C with aeration in Miller LB supplemented with 100 μg mL⁻¹ ampicillin and either no l-arabinose or 0.1% (w/v) l-arabinose are shown. All panels are displayed at the same relative magnification, with a bar representing 10 μm provided in each panel for scale.