In this work, we discuss the mechanisms of the ordered-pattern formation in the colonies of microorganisms, which are related to the instabilities of their collective motion. The nematic-order formation during the E.coli-bacterium growth inside an open microflow chamber is considered and intricate flower-like patterns, which emerge during the growth of the binary mixture of two types of bacteria (motile A. baylyi and non-motile E. coli) on the agar surface inside a Petri dish, are described. The experiments and the models, which explain the observed phenomena, are described in both cases.

中文翻译：

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在生长的微生物菌落中形成有序模式

在这项工作中，我们讨论了微生物菌落中有序模式形成的机制，这与其集体运动的不稳定性有关。大肠杆菌在开放微流室内生长过程中的向列顺序形成被认为是复杂的花状图案，在两种细菌（运动 A. baylyi 和非运动细菌）的二元混合物生长过程中出现大肠杆菌）在培养皿内的琼脂表面上进行了描述。在这两种情况下都描述了解释观察到的现象的实验和模型。