American Society for Microbiology, Applied and Environmental Microbiology, 2(66), p. 543-548, 2000
DOI: 10.1128/aem.66.2.543-548.2000
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ABSTRACT Anaerobic enrichments with acetate as the electron donor and Fe(III) as the terminal electron acceptor were obtained from sediments of Salt Pond, a coastal marine basin near Woods Hole, Mass. A pure culture of a facultatively anaerobic Fe(III) reducer was isolated, and 16S rRNA analysis demonstrated that this organism was most closely related to Pantoea (formerly Enterobacter ) agglomerans , a member of the family Enterobacteriaceae within the gamma subdivision of the Proteobacteria . This organism, designated strain SP1, can grow by coupling the oxidation of acetate or H 2 to the reduction of a variety of electron acceptors, including Fe(III), Mn(IV), Cr(VI), and the humic substance analog 2,6-anthraquinone disulfonate, but not sulfate. To our knowledge, this is the first mesophilic facultative anaerobe reported to couple acetate oxidation to dissimilatory metal reduction.