Fig. 2.
Effect of carbon sources on Xoo biofilm formation (solid bars) and cell growth (hatched bars). Cells were incubated in 96-well polyvinyl chloride microplates for 24 h with XOM2 medium in which xylose was replaced with 0.18% of the indicated carbon sources. The cell growth was measured independently by culturing cells in test tubes (hatched bars). The number of colony-forming units (CFU) was calculated using a conversion factor of 1.12 × 109 CFU/Abs600. No sugar: no added carbon source. Data represent mean ± standard deviation from at least 10 independent experiments for biofilm and from at least 4 independent experiments for cell density. The mean values showing a statistically significant difference in comparison with the control value of ‘No sugar’ were denoted by * (p < 0.05).