FIG. 1.

Metabolism of benzoate by pure cultures of S. aciditrophicus (A)and by S. aciditrophicus-M. hungatei cocultures (B). Symbols: ▪, benzoate; ●, cyclohexane carboxylate; ▴, acetate; ♦, methane; □, benzoate in autoclaved controls; ○, cyclohexane carboxylate in autoclaved controls; ▵, acetate in autoclaved controls; ⋄, methane in autoclaved controls. (Inset) Correlation between benzoate consumption and cyclohexane carboxylate production in S. aciditrophicus pure cultures. The data are averages ± standard deviations based on triplicate microcosms.