The iron-oxidizing proteobacteria

The 'iron bacteria' are a collection of morphologically and phylogenetically heterogeneous prokaryotes. They include some of the first micro-organisms to be observed and described, and continue to be the subject of a considerable body of fundamental and applied microbiological research. Wh...

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Bibliographic Details
Published in:Microbiology (Society for General Microbiology) Vol. 157; no. Pt 6; p. 1551
Main Authors: Hedrich, Sabrina, Schlömann, Michael, Johnson, D Barrie
Format: Journal Article
Language:English
Published: England 01.06.2011
Subjects:
Biotechnology
Environmental Microbiology
Iron - metabolism
Oxidation-Reduction
Phylogeny
Proteobacteria - classification
Proteobacteria - genetics
Proteobacteria - physiology
ISSN:1465-2080, 1465-2080
Online Access:Get more information
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Summary:The 'iron bacteria' are a collection of morphologically and phylogenetically heterogeneous prokaryotes. They include some of the first micro-organisms to be observed and described, and continue to be the subject of a considerable body of fundamental and applied microbiological research. While species of iron-oxidizing bacteria can be found in many different phyla, most are affiliated with the Proteobacteria. The latter can be subdivided into four main physiological groups: (i) acidophilic, aerobic iron oxidizers; (ii) neutrophilic, aerobic iron oxidizers; (iii) neutrophilic, anaerobic (nitrate-dependent) iron oxidizers; and (iv) anaerobic photosynthetic iron oxidizers. Some species (mostly acidophiles) can reduce ferric iron as well as oxidize ferrous iron, depending on prevailing environmental conditions. This review describes what is currently known about the phylogenetic and physiological diversity of the iron-oxidizing proteobacteria, their significance in the environment (on the global and micro scales), and their increasing importance in biotechnology.
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ISSN:1465-2080
1465-2080
DOI:10.1099/mic.0.045344-0