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Indications for a genetic basis for big bacteria and description of the giant cable bacterium **Candidatus Electrothrix gigas sp. nov.** Universiteit Antwerpen
Bacterial cells can vary greatly in size, from a few hundred nanometers to hundreds of micrometers in diameter. Filamentous cable bacteria also display substantial size differences,differences, with filament diameters ranging from 0.4 to 8 mu m. We analyzed diameters ranging from 0.4 to 8 mu m. We analyzed the genomes of cable bacterium filaments from 11 coastal environments of which the resulting 23 new genomes represent 10 novel species-level ...
Persistent flocks of diverse motile bacteria in long-term incubations of electron-conducting cable bacteria, Candidatus Electronema aureum Universiteit Antwerpen
Cable bacteria are centimeters-long filamentous bacteria that oxidize sulfide in anoxic sediment layers and reduce oxygen at the oxic-anoxic interface, connecting these reactions via electron transport. The ubiquitous cable bacteria have a major impact on sediment geochemistry and microbial communities. This includes diverse bacteria swimming around cable bacteria as dense flocks in the anoxic zone, where the cable bacteria act as chemotactic ...
Centimeter-long electrical transport in cable bacteria - structural and electro-optical properties Universiteit Hasselt
This thesis is the result of the first PhD research project within the research group X-LAB, which has the main objective of performing interdisciplinaryand exploratory research with the aim on a creative and sustainable future. The interdisciplinary research of this PhD project explores the boundary between microelectrobiology and bio- and organic electronics by bridging the gap between different disciplines (biology, physics, chemistry, ...
An Ordered and Fail‐Safe Electrical Network in Cable Bacteria Universiteit Hasselt Universiteit Antwerpen
Cable bacteria are an emerging class of electroactive organisms that sustain unprecedented long-range electron transport across centimeter-scale distances. The local pathways of the electrical currents in these filamentous microorganisms remain unresolved. Here, the electrical circuitry in a single cable bacterium is visualized with nanoscopic resolution using conductive atomic force microscopy. Combined with perturbation experiments, it is ...
Impact of cable bacteria on sedimentary iron and manganese dynamics in a seasonally-hypoxic marine basin Vrije Universiteit Brussel KU Leuven Universiteit Antwerpen
Enhanced Laterally Resolved ToF-SIMS and AFM Imaging of the Electrically Conductive Structures in Cable Bacteria Universiteit Hasselt Universiteit Antwerpen
Cable bacteria are electroactive bacteria that form a long, linear chain of ridged cylindrical cells. These filamentous bacteria conduct centimeter-scale long-range electron transport through parallel, interconnected conductive pathways of which the detailed chemical and electrical properties are still unclear. Here, we combine time-of-flight secondary-ion mass spectrometry (ToF-SIMS) and atomic force microscopy (AFM) to investigate the ...
Abundance and biogeochemical impact of cable bacteria in Baltic sea sediments Universiteit Antwerpen
Oxygen depletion in coastal waters may lead to release of toxic sulfide from sediments. Cable bacteria can limit sulfide release by promoting iron oxide formation in sediments. Currently, it is unknown how widespread this phenomenon is. Here, we assess the abundance, activity, and biogeochemical impact of cable bacteria at 12 Baltic Sea sites. Cable bacteria were mostly absent in sediments overlain by anoxic and sulfidic bottom waters, ...
Quantification of cable bacteria in marine sediments via qPCR Universiteit Antwerpen
Cable bacteria (Deltaproteobacteria,Desulfobulbaceae) are long filamentous sulfur-oxidizing bacteria that generate long-distance electric currents running through the bacterial filaments. This way, they couple the oxidation of sulfide in deeper sediment layers to the reduction of oxygen or nitrate near the sediment-water interface. Cable bacteria are found in a wide range of aquatic sediments, but an accurate procedure to assess their abundance ...
Mineral formation induced by cable bacteria performing long-distance electron transport in marine sediments Universiteit Antwerpen
Cable bacteria are multicellular, filamentous microorganisms that are capable of transporting electrons over centimeter-scale distances. Although recently discovered, these bacteria appear to be widely present in the seafloor, and when active they exert a strong imprint on the local geochemistry. In particular, their electrogenic metabolism induces unusually strong pH excursions in aquatic sediments, which induces considerable mineral ...