Substrate consumption and product formation of G. oxydans strains growing with glucose (275 mM; 50 g liter−1). Cultivation was carried out in bioreactors (Dasgip, Jülich, Germany) under pH and aeration control. (A) G. oxydans N44-1 pBBR1MCS4, mean values and standard deviations from two biological experiments. (B) G. oxydans N44-1 mgdH::kan pBBR1MCS4, mean values and standard deviations from two biological experiments. (C) G. oxydans N44-1 ΔmgdH sgdH::kan pBBR1MCS4, mean values and standard deviations from four biological experiments. The concentrations of glucose (•), gluconate (□), 2-KGA/2,5-DKGA (▵), and acetate (⋄) are shown.