TRAIL FOLLOWING AND AGGREGATION OF MYXOBACTERIA

TRAIL FOLLOWING AND AGGREGATION OF MYXOBACTERIA
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粘细菌的踪迹追踪和聚集

DOI：
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发表时间：
1995
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通讯作者：
A. Stevens
A. Stevens
中科院分区：
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文献类型：
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作者：
A. Stevens

文献摘要

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本文讨论了黏菌是否会因黏液跟随而聚集的问题。起点是一个随机元胞自动机模型，其中细菌是粒子，由于跳跃过程的规则而移动。这种自动机的一个简化情况表明，黏液必须以极高的量产生才能引起聚集。这个简化的元胞自动机连接到一个随机的多粒子系统，从中可以导出一个偏微分方程系统，即所谓的趋化系统。这里必须考虑粒子之间适度的相互作用。最后对该系统进行了数值分析，看它是否反映了简化元胞自动机的结果。
This paper deals with the question whether myxobacteria can aggregate due to slime trail following. The starting point is a stochastic cellular automaton model where the bacteria are particles moving due to the rules of a jump process. A simplified case of this automaton shows that the slime has to be produced in an extremely high amount to account for aggregation. This simplified cellular automaton is connected to a stochastic many particle system from which a system of partial differential equations can be derived, a so-called chemotaxis-system. Here a moderate interaction between the particles has to be taken into account. In the last part this system is analyzed numerically to see whether it reflects the results of the simplified cellular automaton.