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http://hdl.handle.net/1942/43656
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DC Field | Value | Language |
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dc.contributor.author | BONNE, Robin | - |
dc.contributor.author | Marshall, Ian P. G. | - |
dc.contributor.author | Bjerg, Jesper J. | - |
dc.contributor.author | Marzocchi, Ugo | - |
dc.contributor.author | MANCA, Jean | - |
dc.contributor.author | Nielsen, Lars Peter | - |
dc.contributor.author | Aiyer, Kartik | - |
dc.contributor.editor | Rudi, Knut | - |
dc.date.accessioned | 2024-09-03T12:26:13Z | - |
dc.date.available | 2024-09-03T12:26:13Z | - |
dc.date.issued | 2024 | - |
dc.date.submitted | 2024-09-03T07:20:15Z | - |
dc.identifier.citation | Applied and environmental microbiology (Print), 90 (8) | - |
dc.identifier.uri | http://hdl.handle.net/1942/43656 | - |
dc.description.abstract | Cable bacteria are filamentous bacteria that couple the oxidation of sulfide in sediments to the reduction of oxygen via long-distance electron transport over centimeter distances through periplasmic wires. However, the capability of cable bacteria to perform extracellular electron transfer to acceptors, such as electrodes, has remained elusive. In this study, we demonstrate that living cable bacteria actively move toward electrodes in different bioelectrochemical systems. Carbon felt and carbon fiber electrodes poised at +200 mV attracted live cable bacteria from the sediment. When the applied potential was switched off, cable bacteria retracted from the electrode. qPCR and scanning electron microscopy corroborated this finding and revealed cable bacteria in higher abundance present on the electrode surface compared with unpoised controls. These experiments raise new possibilities to study metabolism of cable bacteria and cultivate them in bioelectrochemical devices for bioelectronic applications, such as biosensing and bioremediation.IMPORTANCEExtracellular electron transfer is a metabolic function associated with electroactive bacteria wherein electrons are exchanged with external electron acceptors or donors. This feature has enabled the development of several applications, such as biosensing, carbon capture, and energy recovery. Cable bacteria are a unique class of long, filamentous microbes that perform long-distance electron transport in freshwater and marine sediments. In this study, we demonstrate the attraction of cable bacteria toward carbon electrodes and demonstrate their potential electroactivity. This finding enables electronic control and monitoring of the metabolism of cable bacteria and may, in turn, aid in the development of bioelectronic applications. Extracellular electron transfer is a metabolic function associated with electroactive bacteria wherein electrons are exchanged with external electron acceptors or donors. This feature has enabled the development of several applications, such as biosensing, carbon capture, and energy recovery. Cable bacteria are a unique class of long, filamentous microbes that perform long-distance electron transport in freshwater and marine sediments. In this study, we demonstrate the attraction of cable bacteria toward carbon electrodes and demonstrate their potential electroactivity. This finding enables electronic control and monitoring of the metabolism of cable bacteria and may, in turn, aid in the development of bioelectronic applications. | - |
dc.description.sponsorship | We thank Jesper Wulff, Susanne Nielsen, Ronny M. Baaske, and Lars Borregaard Pedersen for their technical assistance with qPCR, 16S sequencing, and trench slide experiments, and Pia Bomholt Jensen for operation of the scanning electron microscope. This work was supported by Danish National Research Foundation (Center for Electromicrobiology, DNRF136; LPN), Villum Fonden (IM and 50414; UM) and the European Union’s Horizon research and innovation program under the Marie Sklodowska-Curie grant agreement (project 101109777; K.A.). All authors conceived the study. K.A. and R.B. performed the experiments and wrote the first draft. I.P.G.M. helped in analysis of the data. All authors contributed to the final version of the manuscript. | - |
dc.language.iso | en | - |
dc.publisher | AMER SOC MICROBIOLOGY | - |
dc.rights | 2024 Bonné et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license. | - |
dc.subject.other | cable bacteria | - |
dc.subject.other | cable bacteria | - |
dc.subject.other | bioelectrochemical system | - |
dc.subject.other | bioelectrochemical system | - |
dc.subject.other | electrode | - |
dc.subject.other | electrode | - |
dc.subject.other | extracellular electron transfer | - |
dc.subject.other | extracellular electron transfer | - |
dc.subject.other | microscopy | - |
dc.subject.other | microscopy | - |
dc.title | Interaction of living cable bacteria with carbon electrodes in bioelectrochemical systems | - |
dc.type | Journal Contribution | - |
dc.identifier.issue | 8 | - |
dc.identifier.volume | 90 | - |
local.format.pages | 12 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Aiyer, K (corresponding author), Aarhus Univ, Ctr Electromicrobiol, Dept Biol, Aarhus, Denmark. | - |
dc.description.notes | kartikaiyer@bio.au.dk | - |
local.publisher.place | 1752 N ST NW, WASHINGTON, DC 20036-2904 USA | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1128/aem.00795-24 | - |
dc.identifier.pmid | 39082847 | - |
dc.identifier.isi | 001281064300001 | - |
dc.contributor.orcid | Marzocchi, Ugo/0000-0002-4746-9944; Marshall, Ian/0000-0001-9264-4687; | - |
dc.contributor.orcid | Nielsen, Lars Peter/0000-0002-7269-4860; Bonne, | - |
dc.contributor.orcid | Robin/0000-0003-1659-1127 | - |
local.provider.type | wosris | - |
local.description.affiliation | [Bonne, Robin; Marshall, Ian P. G.; Bjerg, Jesper J.; Marzocchi, Ugo; Nielsen, Lars Peter; Aiyer, Kartik] Aarhus Univ, Ctr Electromicrobiol, Dept Biol, Aarhus, Denmark. | - |
local.description.affiliation | [Marzocchi, Ugo] Aarhus Univ, Ctr Water Technol WATEC, Dept Biol, Aarhus, Denmark. | - |
local.description.affiliation | [Manca, Jean] Hasselt Univ, X LAB, Diepenbeek, Belgium. | - |
local.uhasselt.international | yes | - |
item.fullcitation | BONNE, Robin; Marshall, Ian P. G.; Bjerg, Jesper J.; Marzocchi, Ugo; MANCA, Jean; Nielsen, Lars Peter & Aiyer, Kartik (2024) Interaction of living cable bacteria with carbon electrodes in bioelectrochemical systems. In: Applied and environmental microbiology (Print), 90 (8). | - |
item.fulltext | With Fulltext | - |
item.accessRights | Open Access | - |
item.contributor | BONNE, Robin | - |
item.contributor | Marshall, Ian P. G. | - |
item.contributor | Bjerg, Jesper J. | - |
item.contributor | Marzocchi, Ugo | - |
item.contributor | MANCA, Jean | - |
item.contributor | Nielsen, Lars Peter | - |
item.contributor | Aiyer, Kartik | - |
item.contributor | Rudi, Knut | - |
crisitem.journal.issn | 0099-2240 | - |
crisitem.journal.eissn | 1098-5336 | - |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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Interaction of living cable bacteria with carbon electrodes in bioelectrochemical systems.pdf | Published version | 838.02 kB | Adobe PDF | View/Open |
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