@article {567,
	title = {Rhodoferax ferrireducens sp. nov., a psychrotolerant, facultatively anaerobic bacterium that oxidizes acetate with the reduction of Fe(III).},
	journal = {Int J Syst Evol Microbiol},
	volume = {53},
	year = {2003},
	month = {2003 May},
	pages = {669-73},
	abstract = {To further investigate the diversity of micro-organisms capable of conserving energy to support growth from dissimilatory Fe(III) reduction, Fe(III)-reducing micro-organisms were enriched and isolated from subsurface sediments collected in Oyster Bay, VA, USA. A novel isolate, designated T118(T), was recovered in a medium with lactate as the sole electron donor and Fe(III) as the sole electron acceptor. Cells of T1 18(T) were Gram-negative, motile, short rods with a single polar flagellum. Strain T1 18(T) grew between pH 6.7 and 7.1, with a temperature range of 4-30 degrees C. The optimal growth temperature was 25 degrees C. Electron donors utilized by strain T1 18(T) with Fe(III) as the sole electron acceptor included acetate, lactate, malate, propionate, pyruvate, succinate and benzoate. None of the compounds tested was fermented. Electron acceptors utilized with either acetate or lactate as the electron donor included Fe(III)-NTA (nitrilotriacetic acid), Mn(IV) oxide, nitrate, fumarate and oxygen. Phylogenetic analysis demonstrated that strain T1 18(T) is most closely related to the genus Rhodoferax. Unlike other species in this genus, strain T1 18(T) is not a phototroph and does not ferment fructose. However, phototrophic genes may be present but not expressed under the experimental conditions tested. No Rhodoferax species have been reported to grow via dissimilatory Fe(III) reduction. Based on these physiological and phylogenetic differences, strain T1 18(T) (=ATCC BAA-621(T) = DSM 15236(T)) is proposed as a novel species, Rhodoferax ferrireducens sp. nov.},
	keywords = {Acetates, Anaerobiosis, Bacterial Typing Techniques, Betaproteobacteria, Cold Temperature, Culture Media, DNA, Ribosomal, Electron Transport, Ferric Compounds, Fresh Water, Molecular Sequence Data, Oxidation-Reduction, Phylogeny, RNA, Ribosomal, 16S, Sequence Analysis, DNA},
	issn = {1466-5026},
	author = {Finneran, Kevin T and Johnsen, Claudia V and Lovley, Derek R}
}
@article {577,
	title = {Multiple influences of nitrate on uranium solubility during bioremediation of uranium-contaminated subsurface sediments.},
	journal = {Environ Microbiol},
	volume = {4},
	year = {2002},
	month = {2002 Sep},
	pages = {510-6},
	abstract = {Microbiological reduction of soluble U(VI) to insoluble U(IV) has been proposed as a remediation strategy for uranium-contaminated groundwater. Nitrate is a common co-contaminant with uranium. Nitrate inhibited U(VI) reduction in acetate-amended aquifer sediments collected from a uranium-contaminated site in New Mexico. Once nitrate was depleted, both U(VI) and Fe(III) were reduced concurrently. When nitrate was added to sediments in which U(VI) had been reduced, U(VI) reappeared in solution. Parallel studies with the dissimilatory Fe(III)-, U(VI)- and nitrate-reducing microorganism, Geobacter metallireducens, demonstrated that nitrate inhibited reduction of Fe(III) and U(VI) in cell suspensions of cells that had been grown with nitrate as the electron acceptor, but not in Fe(III)-grown cells. Suspensions of nitrate-grown G. metallireducens oxidized Fe(II) and U(IV) with nitrate as the electron acceptor. U(IV) oxidation was accelerated when Fe(II) was also added, presumably due to the Fe(III) being formed abiotically oxidizing U(IV). These studies demonstrate that although the presence of nitrate is not likely to be an impediment to the bioremediation of uranium contamination with microbial U(VI) reduction, it is necessary to reduce nitrate before U(VI) can be reduced. These results also suggest that anaerobic oxidation of U(IV) to U(VI) with nitrate serving as the electron acceptor may provide a novel strategy for solubilizing and extracting microbial U(IV) precipitates from the subsurface.},
	keywords = {Ferric Compounds, Ferrous Compounds, Geologic Sediments, Nitrates, Oxidation-Reduction, Proteobacteria, Soil Pollutants, Solubility, Uranium, Water Pollutants, Chemical},
	issn = {1462-2912},
	author = {Finneran, Kevin T and Housewright, Meghan E and Lovley, Derek R}
}
