Abstract:Desulfovibrio vulgaris has been the primary pure culture sulfate reducer for developing microbial corrosion concepts. Multiple mechanisms for how it accepts electrons from Fe0 have been proposed. We investigated Fe0 oxidation with a mutant of D. vulgaris in which hydrogenase genes were deleted. The hydrogenase mutant grew as well as the parental strain with lactate as the electron donor, but unlike the parental strain was not able to grow on H2. The parental strain reduced sulfate with Fe0 as the sole electron… Show more
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