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Diversity of Sulfur Isotope Fractionations by Sulfate-Reducing Prokaryotes

TLDR
The species-specific physiology of each sulfate reducer thus needs to be taken into account to understand the regulation of sulfur isotope fractionation during dissimilatory sulfate reduction.
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Iron corrosion by novel anaerobic microorganisms

TLDR
Novel marine, corrosive types of SRB obtained via an isolation approach with metallic iron as the only electron donor are described, suggesting that the novel surface-attached cell type obtained electrons from metallic iron in a more direct manner than via free hydrogen.
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Molecular analysis of the distribution and phylogeny of the soxB gene among sulfur-oxidizing bacteria - evolution of the Sox sulfur oxidation enzyme system.

TLDR
The soxB gene was detected in all investigated photo- and chemotrophic species that form sulfur globules during thiosulfate oxidation, and the SoxB phylogeny reflected the major 16S rRNA gene-based phylogenetic lineages of the investigated SOB, although topological discrepancies indicated several events of lateral sox B gene transfer among the SOB.
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Molecular Analysis of the Diversity of Sulfate-Reducing and Sulfur-Oxidizing Prokaryotes in the Environment, Using aprA as Functional Marker Gene

  • B. MeyerJ. Kuever
  • Environmental Science
    Applied and Environmental Microbiology
  • 5 October 2007
TLDR
The new aprA gene-targeting assay was applied in comparison with the 16S rRNA gene-based analysis to investigate the microbial diversity of the sulfur cycle in sediment, seawater, and manganese crust samples from four study sites in the area of the Lesser Antilles volcanic arc, Caribbean Sea.
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Phylogeny of the alpha and beta subunits of the dissimilatory adenosine-5'-phosphosulfate (APS) reductase from sulfate-reducing prokaryotes--origin and evolution of the dissimilatory…

TLDR
Analysis of genome data indicated that this phylogenetic separation is also reflected in the differing presence of the putative proteins functionally associated with Apr, QmoABC complex (quinone-interacting membrane-bound oxidoreductase) and AprM (transmembrane protein).
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The influence of ultramafic rocks on microbial communities at the Logatchev hydrothermal field, located 15 degrees N on the Mid-Atlantic Ridge.

The ultramafic-hosted Logatchev hydrothermal field (LHF) on the Mid-Atlantic Ridge is characterized by high hydrogen and methane contents in the subseafloor, which support a specialized microbial…
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Proposal to reclassify the proteobacterial classes Deltaproteobacteria and Oligoflexia, and the phylum Thermodesulfobacteria into four phyla reflecting major functional capabilities.

TLDR
This work systematically explore the phylogeny of taxa currently assigned to these classes using 120 conserved single-copy marker genes as well as rRNA genes and indicates the independent acquisition of predatory behaviour in the phyla Myxococcota and Bdellovibrio, which is consistent with their distinct modes of action.
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Denitratisoma oestradiolicum gen. nov., sp. nov., a 17beta-oestradiol-degrading, denitrifying betaproteobacterium.

TLDR
A Gram-negative, motile, denitrifying bacterium isolated from activated sludge of a municipal wastewater treatment plant using 17beta-oestradiol (E2) as sole source of carbon and energy was isolated and placed in a new genus Denitratisoma gen. nov.
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Molecular analysis of the distribution and phylogeny of dissimilatory adenosine-5'-phosphosulfate reductase-encoding genes (aprBA) among sulfur-oxidizing prokaryotes.

TLDR
The correlation between the AprBA tree topology and the composition/arrangement of the apr gene loci indicates putative lateral aprBA gene transfer from SRP to the respective SOB lineages and the putative functional role of the SRP-related APS reductases in photo- and chemotrophic SOP is discussed.
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Steroidobacter denitrificans gen. nov., sp. nov., a steroidal hormone-degrading gammaproteobacterium.

TLDR
Based on the high 16S rRNA gene sequence divergence and different phenotypic properties from previously described gammaproteobacteria in combination with chemotaxonomic data, strain FS(T) is considered to represent a new genus and species, for which the name Steroidobacter denitrificans gen. nov., sp.
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