| NASA Astrobiology InstituteDiese Seite übersetzen

    These results suggest that FeOB which specialize in oxidation of insoluble Fe(II)-bearing phyllosilicates are distinct from well-recognized aqueous Fe(II)-oxidizing FeOB such as Gallionella, Sideroxydans, Leptothrix, and Sphaerotilus (Emerson et al., 2010).

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    Biological Fe(II) and As(III) oxidation immobilizes ...Diese Seite übersetzen

    However, compared with the As(III) treatments, higher rates of Fe(II) oxidation and Fe precipitation were observed in the soil treatments, suggesting that As(III) inhibited microbial Fe(II) oxidation and that the arsenic-oxidizing bacteria were more active than the FeOB in the As(III) treatments.

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    Draft Genome Sequence of Chlorobium sp. Strain .Diese Seite übersetzen

    Here, we present the draft genome sequence of the halotolerant photoferrotroph Chlorobium sp. strain N1. This draft genome provides insights into the genomic potential of the only marine Fe(II)-oxidizing green sulfur bacterium (GSB) available in culture and expands our views on the metabolic capabilities of Fe(II)-oxidizing GSB more generally.

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    Potential Role of Nitrite for Abiotic Fe(II) Oxidation and ...

    INTRODUCTION. Iron(II)-oxidizing bacteria play a significant role in geochemical element cycling and are involved in iron redox transformation under oxic, microoxic, and anoxic conditions in the environment (1 – 4).Their use of Fe(II) as electron donor at neutral pH leads to the formation of Fe(III) and rapid precipitation of poorly soluble Fe(III) (oxyhydr)oxide minerals.

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    Anaerobic Fe(II)-Oxidizing Bacteria Show As Resistance and ...

    Neutrophilic Fe(II)-oxidizing bacteria produce Fe(III) minerals and therefore have the potential to affect arsenic mobility. In the present study, we demonstrate that the metabolism of anaerobic nitrate-reducing and phototrophic Fe(II)-oxidizing bacteria is not significantly affected by arsenate concentrations of up to 500 μM (37.5 mg/L).

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    | NASA Astrobiology Institute

    These results significantly expand our knowledge of the diversity of FeOB, and provide a wealth of new targets for genomics-based analysis of the evolutionary relationships, molecular mechanisms, and environmental regulation of solid-phase Fe(II)-oxidizing chemolithotrophs. References

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    Review of high temperature corrosion of metals .Diese Seite übersetzen

    A review ofthe corrosion ofalloys in oxidizing/sulphidizing environments is presented,with specialemphasis on high temperature alloys. As in part I * of this work which dealt with corrosion in pure metals, the simultaneous formation ofoxide and sulphide is considered in detail by describing possible reaction paths and transport phenomena of sulphur through oxide scales.

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    Diversity of Mn oxides produced by Mn(II)-oxidizing fungi · PDF Datei

    The oxidizing and sorption capacity of Mn oxide phases, however, is highly dependent upon their size, composition, and structure. The precipitation of Mn oxide minerals in nature is be­ lieved to be largely driven by microbiological activity. Mn(II)-oxidizing bacteria and fungi have been isolated

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    Review of high temperature corrosion of metals and alloys ...

    A review ofthe corrosion ofalloys in oxidizing/sulphidizing environments is presented,with specialemphasis on high temperature alloys. As in part I * of this work which dealt with corrosion in pure metals, the simultaneous formation ofoxide and sulphide is considered in detail by describing possible reaction paths and transport phenomena of sulphur through oxide scales.

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    Microorganisms pumping iron: anaerobic .Diese Seite übersetzen

    01.10.2006 · In support of this, previous studies using the known FOM D. agitata and A. suillum demonstrated the involvement of c-type cytochrome(s) when grown under Fe(II) .

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    Diverse manganese(II)‐oxidizing bacteria are prevalent in ...

    Although Mn(II)‐oxidizing bacteria are known to catalyze the formation of Mn oxides, little is known about the organisms responsible for Mn oxidation in situ, especially in engineered environments. Mn(II)‐oxidizing bacteria are important in drinking water systems, including in biofiltration and water distribution systems.

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    Frontiers | Characterization of pH dependent Mn(II ...

    Jul 17, 2015 · Despite the ubiquity of Mn oxides in natural environments, there are only a few observations of biological Mn(II) oxidation at pH < 6. The lack of low pH Mn-oxidizing bacteria (MOB) isolates limits our understanding of how pH influences biological Mn(II) oxidation in extreme environments.

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    Mn(II)-oxidizing fungi in metal contaminated environments

    Mn(II)-oxidizing fungi in metal contaminated environments Article (PDF Available) in Geochmica et Cosmochimica Acta 73 · June 2009 with 167 Reads How we measure 'reads'

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    Chemolithotrophic nitrate-dependent Fe(II) .Diese Seite übersetzen

    Fe(II) oxidation in natural environments occurs at the oxic-anoxic interface by chemically reacting with atmospheric O 2 or by aerobic Fe(II)-oxidizing bacteria (Emerson and Revsbech, 1994 ...

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    Microbial formation of minerals by communities .Diese Seite übersetzen

    fp7,microfox,erc-sg-pe10,eberhard karls universitaet tuebingen(de)

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    Physiology of phototrophic iron(II)-oxidizing .Diese Seite übersetzen

    01.11.2008 · Phototrophic iron(II) [Fe(II)]-oxidizing bacteria are present in modern environments and evidence suggests that this metabolism was present already o We use cookies to enhance your experience on our website.By continuing to use our website, you are agreeing to our use of cookies.

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    Redox cycling of Fe(II) and Fe(III) in magnetite by Fe ...

    Mar 27, 2015 · Iron acts as both a source and sink of electrons for microorganisms in the environment. Some anaerobic bacteria use oxidized Fe(III) as an electron acceptor, whereas phototrophic bacteria can use reduced Fe(II) as an electron donor. Byrne et al. show that the iron-bearing mineral magnetite, which contains both Fe(II) and Fe(III), can serve as both an electron acceptor and donor. Cocultures of ...

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    Water | Free Full-Text | Natural Attenuation of .Diese Seite übersetzen

    Nonetheless, regardless of which mechanism is involved in microbial Mn(II) oxidation, the activity of such Mn(II)-oxidizing bacteria have been widely observed not only in natural open environments, but also within artificial structures, such as freshwater pipelines and sewage treatment plants [16,17,18,19].

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    Eisenoxidierende Mikroorganismen – Wikipedia

    Die Bezeichnung Eisenoxidierende Mikroorganismen umfasst Bakterien und Archaeen, welche Energie durch die Oxidation von zweiwertigem Eisen (Fe(II)) gewinnen. Bakterien mit einem solchen Energiestoffwechsel werden oft verkürzt Eisenbakterien genannt, diese Gruppe stellt jedoch keine phylogenetisch nahe verwandte Einheit dar. Als Oxidationsmittel für die Eisenoxidation dient .

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    Fe(II)-Oxidizing Prokaryotes | SpringerLinkDiese Seite übersetzen

    Fe(II)-oxidizing prokaryotes.Diverse species of the prokaryotic domains Bacteria and Archaea have the ability to oxidize Fe(II), ferrous iron, to Fe(III), ferric iron. The electrons obtained from the oxidation of Fe(II) are utilized for energy generation in aerobic or anaerobic respiration and/or for assimilative reduction reactions.

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    Geomicrobiology of manganese(II) oxidation - .Diese Seite übersetzen

    Mn(II)-oxidizing microbes have an integral role in the biogeochemical cycling of manganese, iron, nitrogen, carbon, sulfur, and several nutrients and trace metals. There is great interest in mechanistically understanding these cycles and defining the importance of Mn(II)-oxidizing bacteria in modern and ancient geochemical environments.

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