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(PDF) The Fe(II)-oxidizing Zetaproteobacteria: historical ...

Jan 30, 2019 · The Zetaproteobacteria are a class of bacteria typically associated with marine Fe(II)-oxidizing environments. First discovered in the hydrothermal vents at .

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Geomicrobiology of manganese(II) oxidation - .

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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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Physiology of phototrophic iron(II)-oxidizing .

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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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Fe(II)-Oxidizing Prokaryotes | SpringerLink

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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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Draft Genome Sequence of Chlorobium sp. Strain .

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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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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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Microorganisms pumping iron: anaerobic .

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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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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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Oxidizing/Reducing Environments - Ecology and the ...

Jul 19, 2011 · High up in the atmosphere, there is ozone, O3 and it is said to be able to "scrub" some chemicals in the atmosphere. so I think with the extra oxygen it could be oxidizing. For iron smelting, iron ores is heated to very high temperatures, and with coke or a carbon source. and after some processes, pure iron is obtained.

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Manganese(II)-Oxidizing Bacillus Spores in .

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Microbial oxidation and precipitation of manganese at deep-sea hydrothermal vents are important oceanic biogeochemical processes, yet nothing is known about the types of microorganisms or mechanisms involved. Here we report isolation of a number of diverse spore-forming Mn(II)-oxidizing Bacillus species from Guaymas Basin, a deep-sea hydrothermal vent environment in the Gulf of California ...

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Abundance, Distribution, and Activity of Fe(II)-Oxidizing ...

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saline environments is scarce, even less is known about Fe(II) oxidizers in these habitats. Previous reports indicated an inhibi-tory effect of Cl at seawater concentration on microaerophilic (4) and phototrophic (54) Fe(II) oxidizers. McBeth et al. (46) recently presented the first study of a microaerophilic Fe(II)-oxi-

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

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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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Mn(II,III) oxidation and MnO2 mineralization by an ...

Jul 16, 2013 · Reactive Mn(IV) oxide minerals are ubiquitous in the environment and control the bioavailability and distribution of many toxic and essential elements and organic compounds. Their formation is thought to be dependent on microbial enzymes, because spontaneous Mn(II) to Mn(IV) oxidation is slow. Several species of marine Bacillus spores oxidize Mn(II) on their exosporium, the .

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Review of high temperature corrosion of metals .

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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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Abundance, Distribution, and Activity of Fe(II) .

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Fe(II) released during oxidation of pyrite has been shown to also serve as an electron donor for microorganisms . The presence of bioavailable Fe(II) and Fe(III) mineral phases in various salt lake sediments could be indicative of both microaerophilic and anaerobic microbial Fe(II) oxidation and Fe(III) reduction in these environments.

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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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| 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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Frontiers | Metabolic Inactivity and Re-awakening .

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Microorganisms capable of anaerobic nitrate-dependent Fe(II) (ferrous iron) oxidation (ANDFO) contribute significantly to iron and nitrogen cycling in various environments. However, lab efforts in continuous cultivation of ANDFO strains suffer from loss of activity when ferrous iron is used as sole electron donor. Here, we used a novel strain of nitrate-dependent Fe(II)-oxidizing bacterium ...

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Aurantimonas manganoxydans, sp. nov. and .

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Several closely related Mn(II)-oxidizing alpha-Proteobacteria were isolated from very different marine environments: strain SI85-9A1 from the oxic/anoxic interface of a stratified Canadian fjord, strain HTCC 2156 from the surface waters off the Oregon coast, and strain AE01 from the dorsal surface of a hydrothermal vent tubeworm. 16S rRNA analysis reveals that these isolates are part of a ...

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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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Population Structure of Manganese-Oxidizing .

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Manganese-oxidizing bacteria in the aquatic environment have been comprehensively investigated. However, little information is available about the distribution and biogeochemical significance of these bacteria in terrestrial soil environments. In this study, stratified soils were initially examined to investigate the community structure and diversity of manganese-oxidizing bacteria. Total 344 ...

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