FIG 3.

Effects of different compounds on smeVWX expression. Fluorescence levels for: vitamin K₃ (A), vitamin K₂ (B), plumbagin (C), and tert-butyl hydroperoxide (D) given by the expression of smeVWX in PBT02 strain when OD₆₀₀ of 0.6 is reached at several concentrations. Plumbagin and vitamin K₂ slightly increase the YFP levels in comparison with vitamin K₃ (A to C); tert-butyl hydroperoxide does not cause any changes (D). Error bars indicate standard deviations of the results from three independent replicates.