Effect of motility on the transport of bacteria populations through a porous medium

Autores
Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments.
Fil: Creppy, Adama. Centre National de la Recherche Scientifique; Francia
Fil: Clément, Eric. Université Paris Diderot - Paris 7; Francia
Fil: Douarche, Carine. Centre National de la Recherche Scientifique; Francia
Fil: D'angelo, María Verónica. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Auradou, Harold. Centre National de la Recherche Scientifique; Francia
Materia
MOTILITY OF BACTERIA
TRANSPORT
POROUS MEDIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/117493
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Effect of motility on the transport of bacteria populations through a porous mediumCreppy, AdamaClément, EricDouarche, CarineD'angelo, María VerónicaAuradou, HaroldMOTILITY OF BACTERIATRANSPORTPOROUS MEDIAhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments.Fil: Creppy, Adama. Centre National de la Recherche Scientifique; FranciaFil: Clément, Eric. Université Paris Diderot - Paris 7; FranciaFil: Douarche, Carine. Centre National de la Recherche Scientifique; FranciaFil: D'angelo, María Verónica. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Auradou, Harold. Centre National de la Recherche Scientifique; FranciaAmerican Physical Society2019-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/117493Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold; Effect of motility on the transport of bacteria populations through a porous medium; American Physical Society; Physical Review Fluids; 4; 1; 1-2019; 1-162469-990XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevFluids.4.013102info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.4.013102info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:28:50Zoai:ri.conicet.gov.ar:11336/117493instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:28:50.961CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of motility on the transport of bacteria populations through a porous medium
title Effect of motility on the transport of bacteria populations through a porous medium
spellingShingle Effect of motility on the transport of bacteria populations through a porous medium
Creppy, Adama
MOTILITY OF BACTERIA
TRANSPORT
POROUS MEDIA
title_short Effect of motility on the transport of bacteria populations through a porous medium
title_full Effect of motility on the transport of bacteria populations through a porous medium
title_fullStr Effect of motility on the transport of bacteria populations through a porous medium
title_full_unstemmed Effect of motility on the transport of bacteria populations through a porous medium
title_sort Effect of motility on the transport of bacteria populations through a porous medium
dc.creator.none.fl_str_mv Creppy, Adama
Clément, Eric
Douarche, Carine
D'angelo, María Verónica
Auradou, Harold
author Creppy, Adama
author_facet Creppy, Adama
Clément, Eric
Douarche, Carine
D'angelo, María Verónica
Auradou, Harold
author_role author
author2 Clément, Eric
Douarche, Carine
D'angelo, María Verónica
Auradou, Harold
author2_role author
author
author
author
dc.subject.none.fl_str_mv MOTILITY OF BACTERIA
TRANSPORT
POROUS MEDIA
topic MOTILITY OF BACTERIA
TRANSPORT
POROUS MEDIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments.
Fil: Creppy, Adama. Centre National de la Recherche Scientifique; Francia
Fil: Clément, Eric. Université Paris Diderot - Paris 7; Francia
Fil: Douarche, Carine. Centre National de la Recherche Scientifique; Francia
Fil: D'angelo, María Verónica. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Auradou, Harold. Centre National de la Recherche Scientifique; Francia
description The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments.
publishDate 2019
dc.date.none.fl_str_mv 2019-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/117493
Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold; Effect of motility on the transport of bacteria populations through a porous medium; American Physical Society; Physical Review Fluids; 4; 1; 1-2019; 1-16
2469-990X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/117493
identifier_str_mv Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold; Effect of motility on the transport of bacteria populations through a porous medium; American Physical Society; Physical Review Fluids; 4; 1; 1-2019; 1-16
2469-990X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevFluids.4.013102
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.4.013102
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083428175314944
score 13.22299

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