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

Dateien

2003_Straub_229_233.pdfGröße: 195.88 KBDownloads: 374

Datum

2003

Autor:innen

Straub, Kristina Lotte

Schink, Bernhard

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

FEMS Microbiology Letters. 2003, 220(2), pp. 229-233. ISSN 0378-1097. eISSN 1574-6968. Available under: doi: 10.1016/S0378-1097(03)00130-7

Zusammenfassung

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.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

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

Zitieren

ISO 690

STRAUB, Kristina Lotte, Bernhard SCHINK, 2003. Evaluation of electron-shuttling compounds in microbial ferric iron reduction. In: FEMS Microbiology Letters. 2003, 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}
}

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