Fig. 1
Inulin and GOS increase the clbA promoter activity. a-b Growth curves and luminescence measurement of EcN carrying the translational clbA-luciferase reporter fusion. The effect of 0, 20, 30 and 40 mg/mL of inulin (a) and GOS (b) on growth (OD600; filled symbols) and on clbA-lux relative luminescence (RLU 106; open symbols). c-d Area under the curve (AUC) of RLU/OD600 for inulin (c) and GOS (d). *P < 0.05, **P < 0.01, ***P < 0.001 compared to control (0 mg/mL oligosaccharides) and &P < 0.05; ANOVA