View in EDS PDF Full Text

Sulfur-mediated electron shuttling during bacterial iron reduction.

Saved in:
Bibliographic Details
Title: Sulfur-mediated electron shuttling during bacterial iron reduction.
Authors: Flynn, Theodore M., O'Loughlin, Edward J., Mishra, Bhoopesh, DiChristina, Thomas J., Kemner, Kenneth M.
Source: Science (pre-March 2025). 5/30/2014, Vol. 344 Issue 6187, p1039-1042. 4p.
Subjects: Electrophiles, Thermodynamic cycles, Goethite, Aquifers, Shewanella oneidensis
Abstract: Microbial reduction of ferric iron [Fe(III)] is an important biogeochemical process in anoxic aquifers. Depending on groundwater pH, dissimilatory metal-reducing bacteria can also respire alternative electron acceptors to survive, including elemental sulfur (S0). To understand the interplay of Fe/S cycling under alkaline conditions, we combined thermodynamic geochemical modeling with bioreactor experiments using Shewanella oneidensis MR-1. Under these conditions, S. oneidensis can enzymatically reduce S0 but not goethite (α-FeOOH). The HS- produced subsequently reduces goethite abiotically. Because of the prevalence of alkaline conditions in many aquifers, Fe(III) reduction may thus proceed via S0-mediated electron-shuttling pathways. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: pbh
DbLabel: Psychology and Behavioral Sciences Collection
An: 96377397
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Sulfur-mediated electron shuttling during bacterial iron reduction.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Flynn%2C+Theodore+M%2E%22">Flynn, Theodore M.</searchLink><br /><searchLink fieldCode="AR" term="%22O'Loughlin%2C+Edward+J%2E%22">O'Loughlin, Edward J.</searchLink><br /><searchLink fieldCode="AR" term="%22Mishra%2C+Bhoopesh%22">Mishra, Bhoopesh</searchLink><br /><searchLink fieldCode="AR" term="%22DiChristina%2C+Thomas+J%2E%22">DiChristina, Thomas J.</searchLink><br /><searchLink fieldCode="AR" term="%22Kemner%2C+Kenneth+M%2E%22">Kemner, Kenneth M.</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 5/30/2014, Vol. 344 Issue 6187, p1039-1042. 4p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electrophiles%22">Electrophiles</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamic+cycles%22">Thermodynamic cycles</searchLink><br /><searchLink fieldCode="DE" term="%22Goethite%22">Goethite</searchLink><br /><searchLink fieldCode="DE" term="%22Aquifers%22">Aquifers</searchLink><br /><searchLink fieldCode="DE" term="%22Shewanella+oneidensis%22">Shewanella oneidensis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Microbial reduction of ferric iron [Fe(III)] is an important biogeochemical process in anoxic aquifers. Depending on groundwater pH, dissimilatory metal-reducing bacteria can also respire alternative electron acceptors to survive, including elemental sulfur (S0). To understand the interplay of Fe/S cycling under alkaline conditions, we combined thermodynamic geochemical modeling with bioreactor experiments using Shewanella oneidensis MR-1. Under these conditions, S. oneidensis can enzymatically reduce S0 but not goethite (α-FeOOH). The HS- produced subsequently reduces goethite abiotically. Because of the prevalence of alkaline conditions in many aquifers, Fe(III) reduction may thus proceed via S0-mediated electron-shuttling pathways. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=96377397
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1126/science.1252066
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 4
        StartPage: 1039
    Subjects:
      – SubjectFull: Electrophiles
        Type: general
      – SubjectFull: Thermodynamic cycles
        Type: general
      – SubjectFull: Goethite
        Type: general
      – SubjectFull: Aquifers
        Type: general
      – SubjectFull: Shewanella oneidensis
        Type: general
    Titles:
      – TitleFull: Sulfur-mediated electron shuttling during bacterial iron reduction.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Flynn, Theodore M.
      – PersonEntity:
          Name:
            NameFull: O'Loughlin, Edward J.
      – PersonEntity:
          Name:
            NameFull: Mishra, Bhoopesh
      – PersonEntity:
          Name:
            NameFull: DiChristina, Thomas J.
      – PersonEntity:
          Name:
            NameFull: Kemner, Kenneth M.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 30
              M: 05
              Text: 5/30/2014
              Type: published
              Y: 2014
          Identifiers:
            – Type: issn-print
              Value: 00368075
          Numbering:
            – Type: volume
              Value: 344
            – Type: issue
              Value: 6187
          Titles:
            – TitleFull: Science (pre-March 2025)
              Type: main
ResultId 1