Collective chemotaxis and segregation of active bacterial colonies

Scientific Reports
Martine Ben Amar

Abstract

Still recently, bacterial fluid suspensions have motivated a lot of works, both experimental and theoretical, with the objective to understand their collective dynamics from universal and simple rules. Since some species are active, most of these works concern the strong interactions that these bacteria exert on a forced flow leading to instabilities, chaos and turbulence. Here, we investigate the self-organization of expanding bacterial colonies under chemotaxis, proliferation and eventually active-reaction. We propose a simple model to understand and quantify the physical properties of these living organisms which either give cohesion or on the contrary dispersion to the colony. Taking into account the diffusion and capture of morphogens complicates the model since it induces a bacterial density gradient coupled to bacterial density fluctuations and dynamics. Nevertheless under some specific conditions, it is possible to investigate the pattern formation as a usual viscous fingering instability. This explains the similarity and differences of patterns according to the physical bacterial suspension properties and explain the factors which favor compactness or branching.

References

Jan 1, 1976·Journal of Theoretical Biology·H P Greenspan
Feb 14, 1991·Nature·E O Budrene, H C Berg
Apr 17, 1998·Biophysical Journal·M P BrennerE O Budrene
Jun 1, 1989·Physical Review A: General Physics·G Caginalp
Jul 30, 2002·Physical Review Letters·R Aditi Simha, Sriram Ramaswamy
Apr 12, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J Lega, T Passot
Jul 28, 2004·Journal of Mathematical Biology·Helen M Byrne, Markus R Owen
Oct 22, 2005·Biophysical Journal·Eric LaugaHoward A Stone
Jul 20, 2006·Journal of the Royal Society, Interface·Eshel Ben-Jacob, Herbert Levine
May 16, 2007·Physical Review Letters·Andrey SokolovRaymond E Goldstein
Jan 9, 2009·Proceedings of the National Academy of Sciences of the United States of America·Avraham Be'erHarry L Swinney
Nov 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Andrey SokolovIgor S Aranson
Nov 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Brian M HainesDmitry A Karpeev
Nov 13, 2009·Physical Review Letters·Andrey Sokolov, Igor S Aranson
May 26, 2010·Proceedings of the National Academy of Sciences of the United States of America·M E CatesJ Tailleur
Sep 28, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·David Saintillan
Jan 10, 2012·Proceedings of the National Academy of Sciences of the United States of America·Alberto PuliafitoBoris I Shraiman
Mar 10, 2012·Physical Review Letters·T V Kasyap, Donald L Koch
Jun 4, 2013·Current Opinion in Cell Biology·Pere Roca-CusachsXavier Trepat
Jun 19, 2013·Physical Review Letters·Jörn DunkelRaymond E Goldstein
Jul 16, 2013·Physical Review Letters·Hugo WiolandRaymond E Goldstein
Jul 16, 2013·Physical Review Letters·Jérémie GachelinEric Clément
Jan 24, 2014·Journal of the Royal Society, Interface·M Ben Amar, M Wu
Feb 4, 2014·Physical Review Letters·Blaise BourdinPaul Sicsic
Feb 27, 2014·BMC Research Notes·José María Gómez-Gómez, Ricardo Amils
Jun 25, 2014·Proceedings of the National Academy of Sciences of the United States of America·Enkeleida LushiRaymond E Goldstein
Jul 22, 2014·Annals of Plastic Surgery·Paul DiEgidioRichard L Goodwin
Oct 15, 2014·PLoS Biology·Andrew J Muinonen-MartinRobert H Insall

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Citations

Sep 28, 2016·Scientific Reports·Martine Ben Amar, Carlo Bianca
Sep 15, 2016·Physical Review. E·Enkeleida Lushi

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Methods Mentioned

BETA
rheology

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