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Updated: Jun 20, 2026

High-throughput Method for Observing Motility Phenotypes in Pseudomonas aeruginosa
Published on: June 20, 2025
"Candidatus Ovobacter propellens": a large conspicuous prokaryote with an unusual motility behaviour
1Marine Biological Laboratory, University of Copenhagen, Strandpromenaden 5, Helsingør, Denmark. tfenchel@zi.ku.dk
Abstract:
A new type of bacterium "Candidatus Ovobacter propellens" is described. It is a large ovoid species with a number of unusual features including special intracellular membrane systems and a huge flagellar tuft consisting of about 400 flagella. "Ovobacter" lives in oxygen gradients in the surface layer of sulphidic marine sediments at an O(2)-tension of about 0.5% atmospheric saturation. It swims continuously and very fast (up to 1 mm s(-1)). Its mode of swimming and its chemosensory behaviour towards O(2) are described in detail.
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