Modelling of spatio-temporal patterns in bacterial colonies

Details Modelling of spatio-temporal patterns in bacterial colonies Modelling of spatio-temporal patterns in bacterial colonies

1999-04-26

arxiv.org/abs/cond-mat/9904367v1

Physics

Condensed Matter

1 tex file and 6 ps figures. Accepted in Phys.Rev.E

Scientific paper

10.1103/PhysRevE.59.7036

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 {\it Bacillus subtilis} OG-01.

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