Publication Date:
2012-10-30
Description:
Oxygen consumption in marine sediments is often coupled to the oxidation of sulphide generated by degradation of organic matter in deeper, oxygen-free layers. Geochemical observations have shown that this coupling can be mediated by electric currents carried by unidentified electron transporters across centimetre-wide zones. Here we present evidence that the native conductors are long, filamentous bacteria. They abounded in sediment zones with electric currents and along their length they contained strings with distinct properties in accordance with a function as electron transporters. Living, electrical cables add a new dimension to the understanding of interactions in nature and may find use in technology development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfeffer, Christian -- Larsen, Steffen -- Song, Jie -- Dong, Mingdong -- Besenbacher, Flemming -- Meyer, Rikke Louise -- Kjeldsen, Kasper Urup -- Schreiber, Lars -- Gorby, Yuri A -- El-Naggar, Mohamed Y -- Leung, Kar Man -- Schramm, Andreas -- Risgaard-Petersen, Nils -- Nielsen, Lars Peter -- England -- Nature. 2012 Nov 8;491(7423):218-21. doi: 10.1038/nature11586. Epub 2012 Oct 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Geomicrobiology, Department of Bioscience, Aarhus University, 8000 Aarhus C, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23103872" target="_blank"〉PubMed〈/a〉
Keywords:
Aquatic Organisms/cytology/metabolism/ultrastructure
;
Deltaproteobacteria/cytology/*metabolism/ultrastructure
;
Denmark
;
*Electric Conductivity
;
Electron Transport
;
Geologic Sediments/microbiology
;
Glass
;
Microspheres
;
Molecular Sequence Data
;
Molecular Typing
;
Oceans and Seas
;
Oxygen/metabolism
;
Porosity
;
RNA, Ribosomal, 16S/analysis/genetics
;
Sulfides/metabolism
Print ISSN:
0028-0836
Electronic ISSN:
1476-4687
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
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