Science China Materials

, Volume 60, Issue 11, pp 1079–1092 | Cite as

Collective motion of bacteria and their dynamic assembly behavior

Reviews
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Abstract

In recent years, active matter systems have attracted considerable attentions due to their complex dynamic behaviors in physical and material science. In particular, microorganism systems have served as model systems for observing dynamic assembly and collective motility of active particles and significant progresses have been made on in-depth understanding of how high density bacteria colony behaves in the non-equilibrium state. In this mini-review, we mainly focus on the collective motion of bacteria and their dynamic assembly from four aspects: (1) the general phenomenon and biological mechanism of bacterial collective motion; (2) the common experimental techniques for studying bacterial motility; (3) some active systems on exploring bacterial collective behavior, which include both non-restricted free suspensions and those in relative confined geometric space; (4) the phenomenological and descriptive statistical methods and physical models on the underlying laws that lead to large-scale coordinate patterns in multicellular systems. This review aims to give a general picture of the collective motion in bacterial active matter systems experimentally and theoretically in order to reflect the interplays between individuals among populations in motion. It is expected that the general regulation rules related to the boundary effects in the complex systems and materials can be elucidated to some extent.

Keywords

active matter bacterial swarming collective behavior 

细菌活性物质的集群行为以及动态组装

摘要

近年来由于活性物质体系表现出的复杂动态行为, 对活性物质的研究趋于热点. 细菌活性体系由于鞭毛驱动而产生的在非平衡状态下的特殊运动行为成为观察复杂体系整体动态组装及集群运动的较好的模型体系, 本综述主要从如下几个方面对细菌活性体系的动态组装行为进行了简要总结: (1)细菌集群行为的主要现象及生物学机制; (2)研究细菌集群行为的主要技术方法; (3)细菌动态集群行为的相关研究, 其中包括在相对非限制的空间体系和限制空间体系的研究; (4)在研究动态组装现象时的唯像描述方法以及一些简要的物理模型. 本文旨在呈现研究细菌动态集群组装行为的研究概貌, 以体现探究过程中所表现出的个体与群体组装行为的动态关联, 希望一窥复杂体系的整体在动态变化中的规律, 包括与周围环境的相互作用等.

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (21425519) and Tsinghua University Startup Fund.

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of ChemistryTsinghua UniversityBeijingChina

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