Dissimilatory metal reduction.

Microorganisms can enzymatically reduce a variety of metals in metabolic processes that are not related to metal assimilation. Some microorganisms can conserve energy to support growth by coupling the oxidation of simple organic acids and alcohols, H2, or aromatic compounds to the reduction of Fe(III) or Mn(IV). This dissimilatory Fe(III) and Mn(IV) reduction influences the organic as well as the inorganic geochemistry of anaerobic aquatic sediments and ground water. Microorganisms that use U(VI) as a terminal electron acceptor play an important role in uranium geochemistry and may be a useful tool for removing uranium from contaminated environments. Se(VI) serves as a terminal electron acceptor to support anaerobic growth of some microorganisms. Reduction of Se(VI) to Se(O) is an important mechanism for the precipitation of selenium from contaminated waters. Enzymatic reduction of Cr(VI) to the less mobile and less toxic Cr(III), and reduction of soluble Hg(II) to volatile Hg(O) may affect the fate of these compounds in the environment and might be used as a remediation strategy. Microorganisms can also enzymatically reduce other metals such as technetium, vanadium, molybdenum, gold, silver, and copper, but reduction of these metals has not been studied extensively.

[1]  J. R. Trabalka,et al.  Behavior of the Long-Lived Synthetic Elements and Their Natural Analogs in Food Chains , 1983 .

[2]  P. Bos,et al.  Energy Transduction by Anaerobic Ferric Iron Respiration in Thiobacillus ferrooxidans , 1991, Applied and environmental microbiology.

[3]  R. Oremland,et al.  Dissimilatory Selenate Reduction Potentials in a Diversity of Sediment Types , 1990, Applied and environmental microbiology.

[4]  K. Kino,et al.  Biological Reduction of Ferric Iron by Iron- and Sulfur-oxidizing Bacteria , 1982 .

[5]  B. Olson,et al.  Distribution of DNA Sequences Encoding Narrow- and Broad-Spectrum Mercury Resistance , 1991, Applied and environmental microbiology.

[6]  H. Whiteley,et al.  REDUCTION OF INORGANIC COMPOUNDS WITH MOLECULAR HYDROGEN BY MICROCOCCUS LACTILYTICUS I , 1962, Journal of bacteriology.

[7]  R. Oremland,et al.  Measurement of in situ rates of selenate removal by dissimilatory bacterial reduction in sediments , 1990 .

[8]  P. Bos,et al.  Anaerobic Growth of Thiobacillus ferrooxidans , 1992, Applied and environmental microbiology.

[9]  T. Barkay,et al.  Environmental significance of the potential for mer(Tn21)-mediated reduction of Hg2+ to Hg0 in natural waters , 1989, Applied and environmental microbiology.

[10]  O. Tuovinen,et al.  Mechanisms of microbial resistance and detoxification of mercury and organomercury compounds: physiological, biochemical, and genetic analyses. , 1984, Microbiological reviews.

[11]  W. Sand.  Ferric iron reduction by Thiobacillus ferrooxidans at extremely low pH-values , 1989 .

[12]  K. Nealson,et al.  Respiration-linked proton translocation coupled to anaerobic reduction of manganese(IV) and iron(III) in Shewanella putrefaciens MR-1 , 1990, Journal of bacteriology.

[13]  R. Blakemore,et al.  Redox Cycling of Iron Supports Growth and Magnetite Synthesis by Aquaspirillum magnetotacticum , 1992, Applied and environmental microbiology.

[14]  G. W. Bailey,et al.  Sorption of heavy metals by the soil fungi Aspergillus niger and Mucor rouxii , 1992 .

[15]  K. Nealson,et al.  Bacterial Manganese Reduction and Growth with Manganese Oxide as the Sole Electron Acceptor , 1988, Science.

[16]  K. Takamizawa,et al.  NAD(P)H-dependent chromium (VI) reductase of Pseudomonas ambigua G-1: a Cr(V) intermediate is formed during the reduction of Cr(VI) to Cr(III) , 1992, Journal of bacteriology.

[17]  K. Inagaki,et al.  The Mechanism of Copper Leaching by Intact Cells of Thiobacillus ferrooxidans , 1990 .

[18]  Membrane-bound respiratory system of Enterobacter cloacae strain HO1 grown anaerobically with chromate. , 1991, FEMS microbiology letters.

[19]  H. Veeh.  DEPOSITION OF URANIUM FROM THE OCEAN. , 1967 .

[20]  Edward R. Landa,et al.  Microbial reduction of uranium , 1991, Nature.

[21]  Beda A. Hofmann,et al.  Reduction spheroids from northern Switzerland: Mineralogy, geochemistry and genetic models , 1990 .

[22]  R. Murray,et al.  Uptake and retention of metals by cell walls of Bacillus subtilis , 1976, Journal of bacteriology.

[23]  D. Lovley,et al.  Novel Mode of Microbial Energy Metabolism: Organic Carbon Oxidation Coupled to Dissimilatory Reduction of Iron or Manganese , 1988, Applied and environmental microbiology.

[24]  R. J. Bartlett.  Chromium cycling in soils and water: links, gaps, and methods. , 1991, Environmental health perspectives.

[25]  Tsukasa Mori,et al.  Isolation and Characterization of an Enterobacter cloacae Strain That Reduces Hexavalent Chromium under Anaerobic Conditions , 1989, Applied and environmental microbiology.

[26]  R. McPherson,et al.  Accumulation of elemental gold on the alga Chlorella vulgaris , 1986 .

[27]  W. R. Fischer,et al.  Microbiological Reactions of Iron in Soils , 1988 .

[28]  J. Watterson.  Preliminary evidence for the involvement of budding bacteria in the origin of Alaskan placer gold , 1992 .

[29]  G. Zavarzin,et al.  [Anaerobic reduction of ferric iron by hydrogen bacteria]. , 1979, Mikrobiologiia.

[30]  R. Garrels,et al.  Transportation and precipitation of uranium and vanadium at low temperatures, with special reference to sandstone-type uranium deposits , 1962 .

[31]  W. Ingledew,et al.  The reductive reactions of Thiobacillus ferrooxidans on sulphur and selenium , 1989 .

[32]  Derek R. Lovley,et al.  Anaerobic production of magnetite by a dissimilatory iron-reducing microorganism , 1987, Nature.

[33]  Derek R. Lovley,et al.  Enzymatic versus nonenzymatic mechanisms for Fe(III) reduction in aquatic sediments , 1991 .

[34]  D. Lovley,et al.  Manganese inhibition of microbial iron reduction in anaerobic sediments , 1988 .

[35]  J. Hurley,et al.  Mercury cycling in a northern wisconsin seepage lake: The role of particulate matter in vertical transport , 1991 .

[36]  H. Ohtake,et al.  Effects of oxygen stress on chromate reduction in Enterobacter cloacae strain HO1 , 1990 .

[37]  K. Toda,et al.  Membrane-associated chromate reductase activity from Enterobacter cloacae , 1990, Journal of bacteriology.

[38]  Derek R. Lovley,et al.  Oxidation of aromatic contaminants coupled to microbial iron reduction , 1989, Nature.

[39]  N. Brown.  Bacterial resistance to mercury — reductio ad absurdum? , 1985 .

[40]  L. Pignolet,et al.  Role of various microorganisms on Tc behavior in sediments. , 1989, Health physics.

[41]  T. DiChristina.  Effects of nitrate and nitrite on dissimilatory iron reduction by Shewanella putrefaciens 200 , 1992, Journal of bacteriology.

[42]  O. Regnell.  Conversion and Partitioning of Radio-Labelled Mercury Chloride in Aquatic Model Systems , 1990 .

[43]  R. Blakemore,et al.  A Hydrogen-Oxidizing, Fe(III)-Reducing Microorganism from the Great Bay Estuary, New Hampshire , 1992, Applied and environmental microbiology.

[44]  C. Palmer,et al.  Processes affecting the remediation of chromium-contaminated sites. , 1991, Environmental health perspectives.

[45]  V. E. Levine.  THE REDUCING PROPERTIES OF MICROÖRGANISMS WITH SPECIAL REFERENCE TO SELENIUM COMPOUNDS , 1925, Journal of bacteriology.

[46]  T. D. Brock,et al.  Ferric iron reduction by sulfur- and iron-oxidizing bacteria , 1976, Applied and environmental microbiology.

[47]  Lovley DerekR..  Organic matter mineralization with the reduction of ferric iron: A review , 1987 .

[48]  Kenji Inagaki,et al.  Reduction of Cupric Ions with Elemental Sulfur by Thiobacillus ferrooxidans , 1990, Applied and environmental microbiology.

[49]  K. Toda,et al.  Biological removal of toxic chromium using an Enterobacter cloacae strain that reduces chromate under anaerobic conditions. , 1990, Biotechnology and bioengineering.

[50]  J. Lester,et al.  Toxic element contamination and the occurrence of mercury-resistant bacteria in Hg-Contaminated soil, sediments, and sludges , 1991 .

[51]  T. Barkay,et al.  Genes encoding mercuric reductases from selected gram-negative aquatic bacteria have a low degree of homology with merA of transposon Tn501 , 1990, Applied and environmental microbiology.

[52]  D. Lovley,et al.  Hydrogen and Formate Oxidation Coupled to Dissimilatory Reduction of Iron or Manganese by Alteromonas putrefaciens , 1989, Applied and environmental microbiology.

[53]  Hardoyo,et al.  EFFECTS OF HEAVY METAL CATIONS ON CHROMATE REDUCTION BY ENTEROBACTER CLOACAE STRAIN HO1 , 1991 .

[54]  K. Inagaki,et al.  Purification and some properties of sulfur:ferric ion oxidoreductase from Thiobacillus ferrooxidans , 1987, Journal of bacteriology.

[55]  K. Toda,et al.  Reduction of toxic chromate in an industrial effluent by use of a chromate-reducing strain of Enterobacter cloacae. , 1990 .

[56]  C. Myers,et al.  Localization of cytochromes to the outer membrane of anaerobically grown Shewanella putrefaciens MR-1 , 1992, Journal of bacteriology.

[57]  J. Jones,et al.  Bacterial Reduction of Ferric Iron in a Stratified Eutrophic Lake , 1983 .

[58]  K. Inagaki,et al.  Actual substrate for elemental sulfur oxidation by sulfur:ferric ion oxidoreductase purified from Thiobacillus ferrooxidans , 1989 .

[59]  J. Macy,et al.  Selenate reduction by a Pseudomonas species: a new mode of anaerobic respiration. , 1989, FEMS microbiology letters.

[60]  D. Lovley,et al.  Reduction of uranium by Desulfovibrio desulfuricans , 1992, Applied and environmental microbiology.

[61]  S. Benson,et al.  Selenium Immobilization in a Pond Sediment at Kesterson Reservoir , 1990 .

[62]  R. Oremland,et al.  Determination of selenium bioavailability to a benthic bivalve from particulate and solute pathways , 1992 .

[63]  M. Alexander,et al.  Reduction of Inorganic Compounds by Soil Microorganisms1 , 1972 .

[64]  Derek R. Lovley,et al.  Bioremediation of uranium contamination with enzymatic uranium reduction , 1992 .

[65]  A. Bourg,et al.  Aqueous geochemistry of chromium: A review , 1991 .

[66]  A. Summers.  Untwist and shout: a heavy metal-responsive transcriptional regulator , 1992, Journal of bacteriology.

[67]  G. W. Bailey,et al.  Bacterial sorption of heavy metals , 1989, Applied and environmental microbiology.

[68]  K. Inagaki,et al.  Synthesis of an Iron-Oxidizing System during Growth of Thiobacillus ferrooxidans on Sulfur-Basal Salts Medium , 1988, Applied and environmental microbiology.

[69]  T. Gold,et al.  The deep, hot biosphere. , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[70]  S. Silver,et al.  Chromium reduction in Pseudomonas putida , 1990, Applied and environmental microbiology.

[71]  K. Inagaki,et al.  Existence of a new type of sulfite oxidase which utilizes ferric ions as an electron acceptor in Thiobacillus ferrooxidans , 1988, Applied and environmental microbiology.

[72]  D. Lovley.  Microbial oxidation of organic matter coupled to the reduction of Fe(III) and Mn(IV) oxides. , 1992 .

[73]  D. Thompson,et al.  Selenate reduction by bacteria from a selenium-rich environment , 1988, Applied and environmental microbiology.

[74]  D. Lovley,et al.  Fe(III)-reducing bacteria in deeply buried sediments of the Atlantic Coastal Plain , 1990 .

[75]  K. Nealson,et al.  Microbial reduction of manganese oxides - Interactions with iron and sulfur , 1988 .

[76]  D. Lovley,et al.  Anaerobic Oxidation of Toluene, Phenol, and p-Cresol by the Dissimilatory Iron-Reducing Organism, GS-15 , 1990, Applied and environmental microbiology.

[77]  D. Langmuir,et al.  Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposits , 1978 .

[78]  J. Champine,et al.  Acetate catabolism in the dissimilatory iron-reducing isolate GS-15 , 1991, Journal of bacteriology.

[79]  K. Bertine.  The deposition of molybdenum in anoxic waters , 1972 .

[80]  K. Inagaki,et al.  Reduction of Mo6+ with elemental sulfur by Thiobacillus ferrooxidans , 1988, Journal of bacteriology.

[81]  H. Ehrlich.  Manganese oxide reduction as a form of anaerobic respiration , 1987 .

[82]  M. Fleisher,et al.  Uranium deposition in saanich inlet sediments, vancouver island , 1989 .

[83]  C. Hansen,et al.  Bacterial removal of mercury from sewage , 1984, Biotechnology and bioengineering.

[84]  G. A. Burton,et al.  High incidence of selenite-resistant bacteria from a site polluted with selenium , 1987, Applied and environmental microbiology.

[85]  R. Delaune,et al.  Chromium Redox Chemistry in a Lower Mississippi Valley Bottomland Hardwood Wetland , 1992 .

[86]  H. Ohtake,et al.  Bacterial Reduction of Hexavalent Chromium: Kinetic Aspects of Chromate Reduction by Enterobacter cloacae HO1 , 1990 .

[87]  D. Lovley,et al.  Competitive Exclusion of Sulfate Reduction by Fe(lll)‐Reducing Bacteria: A Mechanism for Producing Discrete Zones of High‐Iron Ground Water , 1992 .

[88]  J. Stolz,et al.  Evidence for a novel nitrate reductase in the dissimilatory iron-reducing bacterium Geobacter metallireducens , 1993 .

[89]  M. Palmer,et al.  Uranium in the oceans: Where it goes and why , 1991 .

[90]  R. Oremland,et al.  Reduction of Selenate to Selenide by Sulfate-Respiring Bacteria: Experiments with Cell Suspensions and Estuarine Sediments , 1987 .

[91]  Derek R. Lovley,et al.  Enzymic uranium precipitation , 1992 .

[92]  M. L. Jensen.  Sulfur isotopes and the origin of sandstone-type uranium deposits [Colorado Plateau and Wyoming] , 1958 .

[93]  Marsha I. Sheppard,et al.  A novel method used to examine variation in Tc sorption among 34 soils, aerated and anoxic. , 1990 .

[94]  H. Horitsu,et al.  Enzymatic Reduction of Hexavalent Chromium by Hexavalent Chromium Tolerant Pseudomonas ambigua G-1 , 1987 .

[95]  R. Oremland,et al.  Nitrate Is a Preferred Electron Acceptor for Growth of Freshwater Selenate-Respiring Bacteria , 1992, Applied and environmental microbiology.

[96]  S. Silver,et al.  Gene regulation of plasmid- and chromosome-determined inorganic ion transport in bacteria. , 1992, Microbiological reviews.

[97]  F. Boogerd,et al.  Manganese reduction by a marine Bacillus species , 1986, Journal of bacteriology.

[98]  H. W. Bledsoe,et al.  The Influence of Microbial Activity and Sedimentary Organic Carbon on the Isotope Geochemistry of the Middendorf Aquifer , 1992 .

[99]  J. Henrot,et al.  Bioaccumulation and chemical modification of Tc by soil bacteria. , 1989, Health physics.

[100]  E. Roden,et al.  Dissimilatory Fe(III) Reduction by the Marine Microorganism Desulfuromonas acetoxidans , 1993, Applied and environmental microbiology.

[101]  S. Mann.  Bacteria and the Midas touch , 1992, Nature.

[102]  T. Barkay.  Adaptation of Aquatic Microbial Communities to Hg2+ Stress , 1987, Applied and environmental microbiology.

[103]  R. Oremland,et al.  In situ bacterial selenate reduction in the agricultural drainage systems of western Nevada , 1991, Applied and environmental microbiology.

[104]  T. Barkay,et al.  Hybridization of DNA probes with whole-community genome for detection of genes that encode microbial responses to pollutants: mer genes and Hg2+ resistance , 1989, Applied and environmental microbiology.

[105]  W. Kabsch,et al.  Structure of the detoxification catalyst mercuric ion reductase from Bacillus sp. strain RC607 , 1991, Nature.

[106]  B. Olson,et al.  Conceptual model of genetic regulation of mercury biogeochemical cycling , 1988 .

[107]  R. Oremland,et al.  Selenate Reduction to Elemental Selenium by Anaerobic Bacteria in Sediments and Culture: Biogeochemical Significance of a Novel, Sulfate-Independent Respiration , 1989, Applied and environmental microbiology.