Run-to-Tumble Variability Controls the Surface Residence Times of E. coli Bacteria Article Swipe

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Flagellum Motility Escherichia coli Bacteria Residence time (fluid dynamics) Trapping Biofilm Surface (topology) Physics Biology Microbiology Biophysics Chemical physics Cell biology Ecology Genetics Mathematics Gene Engineering Geometry Geotechnical engineering

Gaspard Junot , Thierry Darnige , Anke Lindner , Vincent A. Martinez , Jochen Arlt , Angela Dawson , Wilson C. K. Poon , Harold Auradou , Éric Clément ·

YOU? · · 2022 · Open Access · · DOI: https://doi.org/10.1103/physrevlett.128.248101 · OA: W4282833944

Motile bacteria are known to accumulate at surfaces, eventually leading to changes in bacterial motility and biofilm formation. We use a novel two-color, three-dimensional Lagrangian tracking technique to follow simultaneously the body and the flagella of a wild-type Escherichia coli. We observe long surface residence times and surface escape corresponding mostly to immediately antecedent tumbling. A motility model accounting for a large behavioral variability in run-time duration reproduces all experimental findings and gives new insights into surface trapping efficiency.