PMID: 9642178Jun 27, 1998Paper

A complex pattern of traveling stripes is produced by swimming cells of Bacillus subtilis

Journal of Bacteriology
N H Mendelson, J Lega

Abstract

Motile cells of Bacillus subtilis inadvertently escaped from the surface of an agar disk that was surrounded by a fluid growth medium and formed a migrating population in the fluid. When viewed from above, the population appeared as a cloud advancing unidirectionally into the fresh medium. The cell population became spontaneously organized into a series of stripes in a region behind the advancing cloud front. The number of stripes increased progressively until a saturation value of stripe density per unit area was reached. New stripes arose at a fixed distance behind the cloud front and also between stripes. The spacing between stripes underwent changes with time as stripes migrated towards and away from the cloud front. The global pattern appeared to be stretched by the advancing cloud front. At a time corresponding to approximately two cell doublings after pattern formation, the pattern decayed, suggesting that there is a maximum number of cells that can be maintained within the pattern. Stripes appear to consist of high concentrations of cells organized in sinking columns that are part of a bioconvection system. Their behavior reveals an interplay between bacterial swimming, bioconvection-driven fluid motion, and cell concen...Continue Reading

References

Feb 14, 1991·Nature·E O Budrene, H C Berg
Feb 1, 1971·Journal of Theoretical Biology·E F Keller, L A Segel
Nov 28, 1994·Physical Review Letters·J LegaA C Newell
Jan 1, 1988·Journal of Fluid Mechanics·T J PedleyJ O Kessler

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Citations

Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·J Lega, N H Mendelson
Jan 29, 2020·Journal of Evolutionary Biology·Gurdip Uppal, Dervis Can Vural
Dec 26, 2001·Proceedings of the National Academy of Sciences of the United States of America·O A IgoshinG Oster
Sep 28, 2004·Physical Review Letters·Christopher DombrowskiJohn O Kessler
Dec 17, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Oleg A IgoshinGeorge Oster
Apr 7, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·V N Biktashev, M A Tsyganov
Jul 13, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Joe Yuichiro WakanoYukio Yamaguchi
Nov 7, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Elias Putzig, Aparna Baskaran
Sep 26, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Arvind GopinathAparna Baskaran
Feb 10, 2004·Mathematical Biosciences·Oleg A Igoshin, George Oster

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