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Stochastic Cellular Automata Modeling on Biofilm Growth in Allelopathy
S.-H. Lee,전태수,박혁규,J. H. Park,K.-H. Choi 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.II
Under the hypothesis of correlation between biofilm growth and nutrient availability, the growth of bacterial populations under the constraint of allelopathy was simulated by using stochastic cellular automata. Local rules governing reproduction and mortality were proposed to elucidate the interactions between toxin-producing and toxin-sensitive bacteria in competition over nutrients. The population size of simulated biofilms was mainly dependent on the magnitude of nutrient concentrations Cn. When Cn = Cn,critical (critical nutrient concentration), the population size of toxin-producing bacteria abruptly increased, while the size of toxin-sensitive bacteria correspondingly decreased. If Cn was lower than the critical nutrient concentration (Cn < Cn,critical), biofilm produced an irregular interface between the solid and liquid phase, while the interface appeared to be highly flat when Cn > Cn,critical.DW