A Stochastic Cellular Automaton Modeling Gliding and Aggregation of Myxobacteria
A Stochastic Cellular Automaton Modeling Gliding and Aggregation of Myxobacteria
复制标题
粘细菌滑动和聚集的随机元胞自动机建模
DOI：
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发表时间：
2000
影响因子：
1.9
通讯作者：
A. Stevens
中科院分区：
文献类型：
--
作者：
A. Stevens
粘细菌是普遍存在的土壤细菌，它们在饥饿条件下聚集并形成子实体以生存。直到最近，它们的社会滑翔、聚集和子实体形成的机制还没有被很好地理解。在本文中，提出了一个随机元胞自动机模型来描述并提供对细菌如何设法构建更高组织结构的理解。在自动机中，粘细菌在具有周期性边界条件的方形网格上移动。它们主要通过两个因素对额叶细胞极的四个最近邻居做出反应：粘液和扩散的化学引诱剂；两者都是由细菌本身产生的。模拟显示了最终导致聚集的不同机制的相互依赖性。该模型的简化版本由偏微分方程组（趋化系统）形式近似。相关出版物 [SIAM J. Appl. Math., 61 (2000), pp. 183--212] 涉及第一个严格的...
The myxobacteria are ubiquitous soil bacteria which aggregate under starvation conditions and build fruiting bodies to survive. Until recently the mechanisms of their social gliding, aggregation, and fruiting body formation have not been well understood. In this paper a stochastic cellular automaton model is presented to describe and provide an understanding of how the bacteria manage to build higher organized structures. In the automaton myxobacteria move on a square grid with periodic boundary conditions. They respond to the four nearest neighbors of their frontal cell poles, mainly through two factors: slime and a diffusing chemoattractant; both are produced by the bacteria themselves. Simulations show the interdependence of the different mechanisms which finally cause aggregation. A simplified version of this model is formally approximated by a system of partial differential equations, a chemotaxis system. A related publication [SIAM J. Appl. Math., 61 (2000), pp. 183--212] deals with the first rigoro...
影响因子：
2.7
作者：
SHIMKETS, LJ;DWORKIN, M
通讯作者：
DWORKIN, M