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  1. Extremophiles
  2. Year: 2010, Volume: 14
  3. Year: 2010, Volume: 14, Issue: 1
  4. Bacterial dissimilatory MnO2 reduction at extremely haloalkaline conditions
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Year: 2010, Volume: 14
Year: 2010, Volume: 14, Issue: 4
Year: 2010, Volume: 14, Issue: 3
Year: 2010, Volume: 14, Issue: 2
Year: 2010, Volume: 14, Issue: 1
Bacterial dissimilatory MnO2 reduction at extremely haloalkaline conditions
Cold-adapted yeasts from Antarctica and the Italian Alps—description of three novel species: Mrakia robertii sp. nov., Mrakia blollopis sp. nov. and Mrakiella niccombsii sp. nov.
Propionate and butyrate dependent bacterial sulfate reduction at extremely haloalkaline conditions and description of Desulfobotulus alkaliphilus sp. nov.
Comparative study of the extracellular proteome of Sulfolobus species reveals limited secretion
“Hot standards” for the thermoacidophilic archaeon Sulfolobus solfataricus
Year: 2009, Volume: 13
Year: 2008, Volume: 12

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Bacterial dissimilatory MnO2 reduction at extremely haloalkaline conditions

Content Provider PubMed Central
Author Sorokin, Dimitri Yu Muyzer, G.
Abstract A possibility of dissimilatory MnO2 reduction at extremely high salt and pH was studied in sediments from hypersaline alkaline lakes in Kulunda Steppe (Altai, Russia). Experiments with anaerobic sediment slurries demonstrated a relatively rapid reduction of colloidal MnO2 in the presence of acetate and formate as electron donor at in situ conditions (i.e., pH 10 and a salt content from 0.6 to 4 M total Na+). All reduced Mn at these conditions remained in the solid phase. A single, stable enrichment culture was obtained from the slurries consistently reducing MnO2 at pH 10 and 0.6 M total Na+ with formate. A pure culture of a haloalkaliphilic Mn-reducing bacterium obtained from the positive enrichment was phylogenetically closely related to the anaerobic haloalkaliphilic Bacillus arseniciselenatis isolated from Mono Lake (CA, USA). Bacillus sp. strain AMnr1 was obligately anaerobic, able to grow either by glucose fermentation, or respiring few nonfermentable substrates by using MnO2 as the electron acceptor. Optimal growth by dissimilatory MnO2 reduction was achieved with glycerol as electron donor at pH 9.5–10 and salt content between 0.4 and 0.8 M total Na+.
Related Links http://dx.doi.org/10.1007/s00792-009-0283-x
Ending Page 46
Page Count 6
Starting Page 41
File Format PDF
ISSN 14310651
e-ISSN 14334909
Journal Extremophiles
Issue Number 1
Volume Number 14
Language English
Publisher Springer Japan
Publisher Date 2010-01-01
Access Restriction Open
Rights Holder Springer Japan
Subject Keyword Molecular Medicine Microbiology Research in Higher Education
Content Type Text
Resource Type Article
Subject Medicine Molecular Medicine Microbiology
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