趋化细菌游动带的模型。
A model for traveling bands of chemotactic bacteria.
作者信息
Lapidus I R, Schiller R
出版信息
Biophys J. 1978 Apr;22(1):1-13. doi: 10.1016/S0006-3495(78)85466-6.
Abstract
A theoretical model is used to study band formation by chemotactic populations of Escherichia coli. The model includes the bacterial response to attractant gradients, the chemotactic sensitivity of the bacteria to the concentration of the attractant, and population growth. For certain values of the parameters in the model, traveling bands of bacteria form and propagate with or without growth. Under specific growth conditions the band profile is maintained and the band propagates at constant speed. These predictions are in general agreement with the experiment results of J. Adler and earlier theoretical work by L. Segel and his collaborators. However, our theory differs in several important respects from the latter efforts. Suggestions are made for further experiments to test the proposed model and to clarify the nature of the processes which lead to band formation.
摘要
一个理论模型被用于研究大肠杆菌趋化群体的条带形成。该模型包括细菌对引诱剂梯度的反应、细菌对引诱剂浓度的趋化敏感性以及群体生长。对于模型中某些参数值，细菌的移动条带会形成并在有或没有生长的情况下传播。在特定生长条件下，条带轮廓得以维持，且条带以恒定速度传播。这些预测总体上与J. 阿德勒的实验结果以及L. 西格尔及其合作者早期的理论工作一致。然而，我们的理论在几个重要方面与后者的研究有所不同。文中提出了进一步实验的建议，以测试所提出的模型并阐明导致条带形成的过程的本质。
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本文引用的文献
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Chemotaxis in bacteria.细菌的趋化性。
Science. 1966 Aug 12;153(3737):708-16. doi: 10.1126/science.153.3737.708.
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Traveling bands of chemotactic bacteria: a theoretical analysis.趋化细菌的游动带：理论分析
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A numerical study of the formation and propagation of traveling bands of chemotactic bacteria.趋化细菌行波带形成与传播的数值研究。
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The range of attractant concentrations for bacterial chemotaxis and the threshold and size of response over this range. Weber law and related phenomena.细菌趋化性的引诱剂浓度范围以及该范围内反应的阈值和大小。韦伯定律及相关现象。
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Chemotaxis in Escherichia coli analysed by three-dimensional tracking.通过三维追踪分析大肠杆菌中的趋化性。
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Letter: traveling bands of chemotactic bacteria revisited.
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