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Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated aquifer

Coates, J D ; Ellis, D J ; Gaw, C V ; Lovley, D R

International journal of systematic and evolutionary microbiology, 1999-10, Vol.49 Pt 4 (4), p.1615-1622 [Periódico revisado por pares]

England

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Título:
Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated aquifer
Autor: Coates, J D ; Ellis, D J ; Gaw, C V ; Lovley, D R
Assuntos: Biodegradation, Environmental ; DNA, Bacterial - genetics ; DNA, Ribosomal - genetics ; Ferric Compounds - metabolism ; Geologic Sediments - microbiology ; Geothrix fermentans ; Gram-Negative Anaerobic Bacteria - classification ; Gram-Negative Anaerobic Bacteria - isolation & purification ; Gram-Negative Anaerobic Bacteria - metabolism ; Gram-Negative Anaerobic Bacteria - physiology ; iron-reducing bacteria ; Molecular Sequence Data ; Oxidation-Reduction ; Petroleum - metabolism ; Phylogeny ; RNA, Ribosomal, 16S - genetics ; Water Microbiology ; Water Pollutants, Chemical - metabolism ; Water Supply
É parte de: International journal of systematic and evolutionary microbiology, 1999-10, Vol.49 Pt 4 (4), p.1615-1622
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: In an attempt to understand better the micro-organisms involved in anaerobic degradation of aromatic hydrocarbons in the Fe(III)-reducing zone of petroleum-contaminated aquifers, Fe(III)-reducing micro-organisms were isolated from contaminated aquifer material that had been adapted for rapid oxidation of toluene coupled to Fe(III) reduction. One of these organisms, strain H-5T, was enriched and isolated on acetate/Fe(III) medium. Strain H-5T is a Gram-negative strict anaerobe that grows with various simple organic acids such as acetate, propionate, lactate and fumarate as alternative electron donors with Fe(III) as the electron acceptor. In addition, strain H-5T also oxidizes long-chain fatty acids such as palmitate with Fe(III) as the sole electron acceptor. Strain H-5T can also grow by fermentation of citrate or fumarate in the absence of an alternative electron acceptor. The primary end-products of citrate fermentation are acetate and succinate. In addition to various forms of soluble and insoluble Fe(III), strain H-5T grows with nitrate, Mn(IV), fumarate and the humic acid analogue 2,6-anthraquinone disulfonate as alternative electron acceptors. As with other organisms that can oxidize organic compounds completely with the reduction of Fe(III), cell suspensions of strain H-5T have absorbance maxima indicative of a c-type cytochrome(s). It is proposed that strain H-5T represents a novel genus in the Holophaga-Acidobacterium phylum and that it should be named Geothrix fermentans sp. nov., gen. nov.
Editor: England
Idioma: Inglês

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Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated aquifer

Coates, J D ; Ellis, D J ; Gaw, C V ; Lovley, D R

England

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