Evaluation of electron-shuttling compounds in microbial ferric iron reduction

Straub, Kristina Lotte; Schink, Bernhard

Evaluation of electron-shuttling compounds in microbial ferric iron reduction

Files

2003_Straub_229_233.pdf(195.88 KB)

Date

2003

Authors

Straub, Kristina Lotte

Schink, Bernhard

Publication type

Journal article

Published in

FEMS Microbiology Letters ; 220 (2003), 2. - pp. 229-233. - ISSN 0378-1097. - eISSN 1574-6968

Abstract

Iron-reducing bacteria can transfer electrons to ferric iron oxides which are barely soluble at neutral pH, and electron-shuttling compounds or chelators are discussed to be involved in this process. Experiments using semipermeable membranes for separation of ferric iron-reducing bacteria from ferric iron oxides do not provide conclusive results in this respect. Here, we used ferrihydrite embedded in 1% agar to check for electron-shuttling compounds in pure and in enrichment cultures. Geobacter sulfurreducens reduced spatially distant ferrihydrite only in the presence of anthraquinone-2,6-disulfonate, a small molecule known to shuttle electrons between the bacterial cell and ferrihydrite. However, indications for the production and excretion of electron-shuttling compounds or chelators were found in ferrihydrite-containing agar dilution cultures that were inoculated with ferric iron-reducing enrichment cultures.

Subject (DDC)

570 Biosciences, Biology

Keywords

Ferric iron-reducing bacteria,Geobacteraceae,electron-shuttling compounds,ferrihydrite in agar

Cite This

ISO 690

STRAUB, Kristina Lotte, Bernhard SCHINK, 2003. Evaluation of electron-shuttling compounds in microbial ferric iron reduction. In: FEMS Microbiology Letters. 220(2), pp. 229-233. ISSN 0378-1097. eISSN 1574-6968. Available under: doi: 10.1016/S0378-1097(03)00130-7

BibTex

@article{Straub2003Evalu-8626,
  year={2003},
  doi={10.1016/S0378-1097(03)00130-7},
  title={Evaluation of electron-shuttling compounds in microbial ferric iron reduction},
  number={2},
  volume={220},
  issn={0378-1097},
  journal={FEMS Microbiology Letters},
  pages={229--233},
  author={Straub, Kristina Lotte and Schink, Bernhard}
}

RDF

<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/8626">
    <dc:format>application/pdf</dc:format>
    <dc:rights>terms-of-use</dc:rights>
    <dc:contributor>Schink, Bernhard</dc:contributor>
    <dc:creator>Schink, Bernhard</dc:creator>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/8626"/>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:45:13Z</dcterms:available>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dcterms:bibliographicCitation>First publ. in: FEMS Microbiology Letters 220 (2003), pp. 229-233</dcterms:bibliographicCitation>
    <dcterms:title>Evaluation of electron-shuttling compounds in microbial ferric iron reduction</dcterms:title>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/8626/1/2003_Straub_229_233.pdf"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:contributor>Straub, Kristina Lotte</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/8626/1/2003_Straub_229_233.pdf"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:45:13Z</dc:date>
    <dcterms:abstract xml:lang="eng">Iron-reducing bacteria can transfer electrons to ferric iron oxides which are barely soluble at neutral pH, and electron-shuttling compounds or chelators are discussed to be involved in this process. Experiments using semipermeable membranes for separation of ferric iron-reducing bacteria from ferric iron oxides do not provide conclusive results in this respect. Here, we used ferrihydrite embedded in 1% agar to check for electron-shuttling compounds in pure and in enrichment cultures. Geobacter sulfurreducens reduced spatially distant ferrihydrite only in the presence of anthraquinone-2,6-disulfonate, a small molecule known to shuttle electrons between the bacterial cell and ferrihydrite. However, indications for the production and excretion of electron-shuttling compounds or chelators were found in ferrihydrite-containing agar dilution cultures that were inoculated with ferric iron-reducing enrichment cultures.</dcterms:abstract>
    <dcterms:issued>2003</dcterms:issued>
    <dc:language>eng</dc:language>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Straub, Kristina Lotte</dc:creator>
  </rdf:Description>
</rdf:RDF>

Bibliography of Konstanz

Yes