Fig 7.

(A) Growth curves for D. alaskensis wild-type and mutant strain cocultures with M. hungatei on pyruvate and lactate. The wild type and the Dde_1072 insertion mutant strain are indicated by filled symbols, whereas other mutant strains are indicated by open symbols (mutant strain data have been clustered into groups according to their proposed gene function, as shown in Table 1). (B) Maximum ODs of wild-type and mutant strains grown in monoculture (with sulfate) or coculture (without sulfate) on either 30 mM lactate or 30 mM pyruvate. The error bars indicate the standard deviations for triplicate cultures.