Modelling of spatio-temporal patterns in bacterial colonies
arXiv:cond-mat/9904367 · doi:10.1103/PhysRevE.59.7036
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 {\it Bacillus subtilis} OG-01.
1 tex file and 6 ps figures. Accepted in Phys.Rev.E
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