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.
Original language | English |
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Pages (from-to) | 91-99 |
Number of pages | 9 |
Journal | Physica D: Nonlinear Phenomena |
Volume | 318-319 |
DOIs | |
State | Published - 1 Apr 2016 |
Keywords
- Bacterial colonies
- Pattern formation
- Random lattice
- Reaction-diffusion model
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Mathematical Physics
- Condensed Matter Physics
- Applied Mathematics