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A growing bacterial colony in two dimensions as an active nematic

hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
hal.structure.identifierDipartimento di Fisica [Roma La Sapienza]
dc.contributor.authorDELL'ARCIPRETE, D.
hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
dc.contributor.authorBLOW, M. L.
hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
dc.contributor.authorBROWN, A.T.
hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
hal.structure.identifierSchool of Life Sciences [Warwick]
dc.contributor.authorFARRELL, F. D. C.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorLINTUVUORI, Juho S
hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
dc.contributor.authorMCVEY, A. F.
hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
dc.contributor.authorMARENDUZZO, D.
hal.structure.identifierSUPA School of Physics and Astronomy [Edinburgh]
dc.contributor.authorPOON, Wilson C. K.
dc.date.created2017-09-29
dc.date.issued2018
dc.identifier.issn2041-1723
dc.description.abstractEnHow a single bacterium becomes a colony of many thousand cells is important in biomedicine and food safety. Much is known about the molecular and genetic bases of this process, but less about the underlying physical mechanisms. Here we study the growth of single-layer micro-colonies of rod-shaped Escherichia coli bacteria confined to just under the surface of soft agarose by a glass slide. Analysing this system as a liquid crystal, we find that growth-induced activity fragments the colony into microdomains of well-defined size, whilst the associated flow orients it tangentially at the boundary. Topological defect pairs with charges ±1/2 are produced at a constant rate, with the +1/2 defects being propelled to the periphery. Theoretical modelling suggests that these phenomena have different physical origins from similar observations in other extensile active nematics, and a growing bacterial colony belongs to a new universality class, with features reminiscent of the expanding universe.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enA growing bacterial colony in two dimensions as an active nematic
dc.typeArticle de revue
dc.identifier.doi10.1038/s41467-018-06370-3
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Physique [physics]/Biophysique [physics.bio-ph]
dc.subject.halSciences du Vivant [q-bio]/Microbiologie et Parasitologie/Bactériologie
dc.description.sponsorshipEuropeThe Physics of Active Particle Suspensions
dc.description.sponsorshipEuropeDynamics of Confined Complex Suspensions
bordeaux.journalNature Communications
bordeaux.page4190
bordeaux.volume9
bordeaux.peerReviewedoui
hal.identifierhal-01989743
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01989743v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Communications&rft.date=2018&rft.volume=9&rft.spage=4190&rft.epage=4190&rft.eissn=2041-1723&rft.issn=2041-1723&rft.au=DELL'ARCIPRETE,%20D.&BLOW,%20M.%20L.&BROWN,%20A.T.&FARRELL,%20F.%20D.%20C.&LINTUVUORI,%20Juho%20S&rft.genre=article


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