FIG 2.

Growth rates of L. reuteri strains in mMRS broth. White bars indicate glucose as a carbon source (S1 and S2 media), gray bars indicate maltose as a carbon source (W1 and W2 media), and hatched bars indicate the addition of electron acceptors (10 mmol/liter glycerol in S2 medium and 10 mmol/liter sucrose in W2 medium), between S1 and S2 media (*), between W1 and W2 media (**), and between the wild-type strain FUA3400 and the mutant strain FUA3400ΔgupCDE (Δ). Data shown are means ± standard deviations from triplicate independent experiments.