Fig. 1. Growth of G. metallireducens in anoxic, acetate- (A1, A2) and acetate plus benzoate- (B1, B2) limited retentostats with Fe(III) citrate as an electron acceptor. (0) Measured cell numbers in retentostats, ( ) fitted biomass x(t)fit , ( ) Fe 2+, ( ) acetate and ( ) benzoate concentrations in the filtrate. (- - -) indicates the sampling points for proteomic analysis and the respective doubling times (td(h)) at the time of sampling. Data on all retentostat replicates can be found in the supplementary material (Figs. S1 and S2). (Figs. S1 and S2).