Fig. 1.

PilG and PilH antagonistically regulate swimming and swarming motility in Xcc. a Examination of swimming and swarming motility. i and ii Examination of swarming motility for mutation in genes pilG and pilH. Strains were inoculated onto ‘swarm’ plate (NY medium containing 2% glucose and 0.6% agar) then incubated at 28 °C for 3 days. iii and iv Examination of swimming motility for mutation in genes pilG and pilH. Strains were stabbed into ‘swim’ plate (0.03% Bacto peptone, 0.03% yeast extract and 0.28% agar) then incubated at 28 °C for 3 days. b The diameter of the colony 8004, ΔpilG, CpilG, ΔpilH and CpilH on swimming and swarming plates. Significance was tested by Student’s t test (* and ** represent significance at P < 0.05 and 0.01, respectively)