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Identification of Mn(II)-Oxidizing Bacteria from a .

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However, little is known about Mn oxidation in low-pH environments, where metal contamination often is a problem as the result of mining activities. We isolated two Mn(II)-oxidizing bacteria (MOB) at pH 5.5 (Duganella isolate AB_14 and Albidiferax isolate TB-2) and .

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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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(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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Iron-oxidizing bacteria - Wikipedia

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Iron-oxidizing bacteria are chemotrophic bacteria that derive the energy they need to live and multiply by oxidizing dissolved ferrous iron.They are known to grow and proliferate in waters containing iron concentrations as low as 0.1 mg/L. However, at least 0.3 ppm .

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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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Geomicrobiology of manganese(II) oxidation.

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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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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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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Microbial Fe(II) oxidation: cell-mineral .

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An increase in temperature leads to a faster bacterial oxidation rate of Fe(II) and a decrease in silica precipitation while a decrease in temperature has opposite effects. Fe(II)-oxidizing bacteria are not only exposed to the threat of encrustation, high radical concentration due to the presence of Fe(II) is a constant threat for mutation.

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

Zetaproteobacteria: a novel class of marine Fe(II)-oxidizing bacteria. The discovery of Zetaproteobacteria is a story that began decades before the class was proposed. The unusual morphology of biogenic Fe(III) (oxyhydr)oxides have long been used to recognize microbial Fe(II) oxidation in terrestrial environments.

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Redox - Wikipedia

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In geology, redox is important to both the formation of minerals and the mobilization of minerals, and is also important in some depositional environments. In general, the redox state of most rocks can be seen in the color of the rock. The rock forms in oxidizing conditions, giving it a red color.

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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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| NASA Astrobiology Institute

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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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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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Water | Free Full-Text | Natural Attenuation of .

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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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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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However, information about anaerobic microbial iron metabolism in hypersaline environments is scarce. We studied the phylogenetic diversity, distribution, and metabolic activity of iron(II)-oxidizing and iron(III)-reducing Bacteria and Archaea in pH-neutral, iron-rich salt .

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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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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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Chemolithotrophic nitrate-dependent Fe(II) .

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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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