Modeling of spatiotemporal patterns in bacterial colonies

Phys. Rev. E 59, 7036 – Published 1 June 1999
A. M. Lacasta, I. R. Cantalapiedra, C. E. Auguet, A. Peñaranda, and L. Ramírez-Piscina

Abstract

A diffusion-reaction model for the growth of bacterial colonies is presented. The often observed cooperative behavior developed by bacteria which increases their motility in adverse growth conditions is here introduced as a nonlinear diffusion term. The presence of this mechanism depends on a response which can present hysteresis. By changing only the concentrations of agar and initial nutrient, numerical integration of the proposed model reproduces the different patterns shown by Bacillus subtilis OG-01.

DOI: http://dx.doi.org/10.1103/PhysRevE.59.7036

  • Received 21 October 1998
  • Published in the issue dated June 1999

© 1999 The American Physical Society

Authors & Affiliations

A. M. Lacasta, I. R. Cantalapiedra, C. E. Auguet, A. Peñaranda, and L. Ramírez-Piscina

  • Departament de Física Aplicada, Universitat Politècnica de Catalunya, Avenida Dr. Marañon 44, E-08028 Barcelona, Spain

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