How the motility pattern of bacteria affects their dispersal and chemotaxis.
How the motility pattern of bacteria affects their dispersal and chemotaxis.
复制标题
细菌的运动模式如何影响它们的分散和趋化性。
DOI：
10.1371/journal.pone.0081936
复制
发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Zaburdaev V
中科院分区：
文献类型：
--
作者：
Taktikos J;Stark H;Zaburdaev V
大多数处于生命周期特定阶段的细菌能够主动移动；它们可以在液体中游泳或在不同的表面爬行。移动细胞的典型路径通常类似于随机行走的轨迹。然而，细菌能够改变它们表面上的随机运动，以应对不断变化的环境条件。因此，细菌可以向营养来源迁移，或者远离有害化学物质。令人惊讶的是，许多被研究的细菌物种都有几种不同的运动模式，理论上可以用统一的随机行走方法来建模。我们使用这种方法来量化细胞在均匀环境中的扩散过程，并展示细菌向吸引化学物质来源的漂移速度如何受到细菌运动模式的影响。我们的结果打开了通过对细菌在不均匀环境中运动的宏观观察来获取有关细胞内在反应的额外信息的可能性。
Most bacteria at certain stages of their life cycle are able to move actively; they can swim in a liquid or crawl on various surfaces. A typical path of the moving cell often resembles the trajectory of a random walk. However, bacteria are capable of modifying their apparently random motion in response to changing environmental conditions. As a result, bacteria can migrate towards the source of nutrients or away from harmful chemicals. Surprisingly, many bacterial species that were studied have several distinct motility patterns, which can be theoretically modeled by a unifying random walk approach. We use this approach to quantify the process of cell dispersal in a homogeneous environment and show how the bacterial drift velocity towards the source of attracting chemicals is affected by the motility pattern of the bacteria. Our results open up the possibility of accessing additional information about the intrinsic response of the cells using macroscopic observations of bacteria moving in inhomogeneous environments.
登录
查看更多内容
影响因子：
10.5
作者：
Hazelbauer GL
通讯作者：
Hazelbauer GL
DOI：
10.1088/1742-5468/2007/08/p08001
发表时间：
2007-08-01
影响因子：
2.4
作者：
Barkai, E.;Sokolov, I. M.
通讯作者：
Sokolov, I. M.
影响因子：
3.4
作者：
Altindal, Tuba;Xie, Li;Wu, Xiao-Lun
通讯作者：
Wu, Xiao-Lun
影响因子：
64.8
作者：
BERG, HC;BROWN, DA
通讯作者：
BROWN, DA
影响因子：
1.4
作者：
Johansen, JE;Pinhassi, J;Hagström, Å
通讯作者：
Hagström, Å