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Surface conversion of the dynamics of bacteria escaping chemorepellents.
Braham, Asma; Lemelle, Laurence; Ducasse, Romain; Toukabri, Houyem; Mottin, Eleonore; Fabrèges, Benoit; Calvez, Vincent; Place, Christophe.
Afiliación
  • Braham A; Laboratoire de Géologie de Lyon-Terre Planètes Et Environnement, ENS de Lyon, University Claude Bernard, CNRS, 69342, Lyon, France.
  • Lemelle L; Laboratoire de Physique, ENS de Lyon, CNRS, 69342, Lyon, France.
  • Ducasse R; Laboratoire de Géologie de Lyon-Terre Planètes Et Environnement, ENS de Lyon, University Claude Bernard, CNRS, 69342, Lyon, France. laurence.lemelle@ens-lyon.fr.
  • Toukabri H; Laboratoire Jacques-Louis Lions, Université Paris Cité, Sorbonne University, CNRS, 75005, Paris, France.
  • Mottin E; Laboratoire de Géologie de Lyon-Terre Planètes Et Environnement, ENS de Lyon, University Claude Bernard, CNRS, 69342, Lyon, France.
  • Fabrèges B; Centre for Genomic Regulation, C/ Dr Aiguader, 88, 08003, Barcelone, Spain.
  • Calvez V; Laboratoire de Géologie de Lyon-Terre Planètes Et Environnement, ENS de Lyon, University Claude Bernard, CNRS, 69342, Lyon, France.
  • Place C; Institut Camille Jordan, University Claude Bernard, CNRS, 69100, Villeurbanne, France.
Eur Phys J E Soft Matter ; 47(9): 56, 2024 Sep 15.
Article en En | MEDLINE | ID: mdl-39278991
ABSTRACT
Flagellar swimming hydrodynamics confers a recognized advantage for attachment on solid surfaces. Whether this motility further enables the following environmental cues was experimentally explored. Motile E. coli (OD ~ 0.1) in a 100 µm-thick channel were exposed to off-equilibrium gradients set by a chemorepellent Ni(NO3)2-source (250 mM). Single bacterial dynamics at the solid surface was analyzed by dark-field videomicroscopy at a fixed position. The number of bacteria indicated their congregation into a wave escaping from the repellent source. Besides the high velocity drift in the propagation direction within the wave, an unexpectedly high perpendicular component drift was also observed. Swimming hydrodynamics CW-bends the bacteria trajectories during their primo approach to the surface (< 2 µm), and a high enough tumbling frequency likely preserves a notable lateral drift. This comprehension substantiates a survival strategy tailored to toxic environments, which involves drifting along surfaces, promoting the inception of colonization at the most advantageous sites.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Escherichia coli / Hidrodinámica Idioma: En Revista: Eur Phys J E Soft Matter Asunto de la revista: BIOFISICA Año: 2024 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Francia
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Escherichia coli / Hidrodinámica Idioma: En Revista: Eur Phys J E Soft Matter Asunto de la revista: BIOFISICA Año: 2024 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Francia