Figure 6. Concentration-dependent inhibition of pyocyanin production and growth of P. aeruginosa.

P. aeruginosa PAO1 was grown in LB at 30°C with serial dilutions of yayurea A (A), yayurea B (B), furanone (C) and tetracycline (D). Relative pyocyanin production was calculated as the ratio between pyocyanin content and cell density (absorbance at 600 nm). Values represent the means of three independent experiments. Bars indicate standard deviation of the mean, SD.