FIG 1.

Inhibition of P. aeruginosa swarming motility by bicyclic compounds. The cells were inoculated at the center of a plate containing M9 swarming medium and 0.5% agar with or without each compound and incubated at 30°C for 12 h. (A) The effects of various compounds on swarming motility. Each compound was added at 500 μM, with the exception of 1,2-dihydroxynaphthalene, which was added to the medium at 250 μM. Three independent experiments were performed, and representative data are shown. (B) Dose-dependent effect of 1-naphthol (0, 5, 50, and 500 μM) on swarming motility. Three independent experiments were performed, and representative data are shown.