FIG 5.

Previous exposure to xylose creates a memory effect. The strain with the titration plasmid was grown on xylose and switched to a glucose-xylose mix on microplates with different concentrations of inoculant so that the number of generations on glucose differs between two growth phases on xylose. The duration of the diauxic lags are represented as a function of the number of generations on glucose. For each condition, four replicates were performed. n = 4 for all generation numbers but the highest (n = 2).