Nielsen, Lars Peter


Publications
4

Indications for a genetic basis for big bacteria and description of the giant cable bacterium Candidatus Electrothrix gigas sp. nov

Citation
Geelhoed et al. (2023). Microbiology Spectrum 11 (5)
Names
“Electrothrix arhusiensis” “Electrothrix communis” “Electrothrix” “Electronema” “Electrothrix gigas”
Abstract
ABSTRACT 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, with filament diameters ranging from 0.4 to 8 µm. We analyzed the genomes of cable bacterium filaments from 11 coastal environments of which the resulting 23 new genomes represent 10 novel species-level clades of Candidatus Electrothrix and two clades that putat

Persistent flocks of diverse motile bacteria in long-term incubations of electron-conducting cable bacteria, Candidatus Electronema aureum

Citation
Lustermans et al. (2023). Frontiers in Microbiology 14
Names
“Electronema aureum”
Abstract
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 attractant. We hypothesized that flocking only appear

On the evolution and physiology of cable bacteria

Citation
Kjeldsen et al. (2019). Proceedings of the National Academy of Sciences 116 (38)
Names
“Electronema aureum” “Electrothrix arhusiensis” “Electrothrix communis” “Electrothrix” “Electronema”
Abstract
Cable bacteria of the family Desulfobulbaceae form centimeter-long filaments comprising thousands of cells. They occur worldwide in the surface of aquatic sediments, where they connect sulfide oxidation with oxygen or nitrate reduction via long-distance electron transport. In the absence of pure cultures, we used single-filament genomics and metagenomics to retrieve draft genomes of 3 marine Candidatus Electrothrix and 1 freshwater Ca.