Figure 1.

Comparison of motility on swarming plates for WT and TCST mutants. Bacterial strains were spotted on the swarming plate (0.3% agar) and incubated at 28°C. Photos were taken at one or two days post inoculation. DPI: days post inoculation. A1 to D1: WT strain; A2: grrS mutant; A3: grrA mutant; B2: envZ mutant; B3: ompR mutant; B4: envZ/ompR double mutant; C2 to C4: representative mutants with irregular movements at two days post inoculation; D2 to D4: flhD, flhC and fliA mutant, respectively. Flagella mutants were used as negative controls.