Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1899203 | Physica D: Nonlinear Phenomena | 2016 | 9 Pages |
Abstract
Bacteria develop complex patterns depending on growth condition. For example, Bacillus subtilis exhibit five different patterns depending on substrate hardness and nutrient concentration. We present a unified integro-differential model that reproduces the entire experimentally observed morphology diagram at varying nutrient concentrations and substrate hardness. The model allows a comprehensive and quantitative comparison between experimental and numerical variables and parameters, such as colony growth rate, nutrient concentration and diffusion constants. As a result, the role of the different physical mechanisms underlying and regulating the growth of the colony can be evaluated.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Deborah Schwarcz, Herbert Levine, Eshel Ben-Jacob, Gil Ariel,