Growth-mediated autochemotactic pattern formation in self-propelling bacteria.

Growth-mediated autochemotactic pattern formation in self-propelling bacteria.
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自推进细菌中生长介导的自趋化模式形成。

DOI:
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发表时间:
2018
期刊:
影响因子:
2.4
通讯作者:
Pushpita Ghosh
Pushpita Ghosh
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Mrinmoy Mukherjee;Pushpita Ghosh

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细菌在形成多细胞菌落或生物膜的同时,可以通过各种复杂的机制进行模式形成。其中一个途径是朝向或远离自我分泌或外部使用的化学物质的定向运动或趋化性。在一些细菌中,自身产生的信号化学物质或自身诱导物本身充当化学引诱物或化学排斥物,从而调节殖民地中细胞的定向运动。此外,细菌遵循一定的生长动力学,其整合在菌落发育过程中。在这里,我们研究的相互作用的细菌生长动力学,细胞运动,和自动趋化运动相对于自我分泌的扩散信号化学物质的空间格局的形成。使用一个连续模型的能动细菌,我们表明增长可以作为一个关键的调整参数,在确定的时空动态的殖民地。在生长动力学的作用中,虽然对自诱导物的化学吸引产生了停滞的相分离,但对于固定的化学排斥强度,可以发生模式转换和抑制。
Bacteria, while developing a multicellular colony or biofilm, can undergo pattern formation by diverse intricate mechanisms. One such route is directional movement or chemotaxis toward or away from self-secreted or externally employed chemicals. In some bacteria, the self-produced signaling chemicals or autoinducers themselves act as chemoattractants or chemorepellents and thereby regulate the directional movements of the cells in the colony. In addition, bacteria follow a certain growth kinetics which is integrated in the process of colony development. Here, we study the interplay of bacterial growth dynamics, cell motility, and autochemotactic motion with respect to the self-secreted diffusive signaling chemicals in spatial pattern formation. Using a continuum model of motile bacteria, we show growth can act as a crucial tuning parameter in determining the spatiotemporal dynamics of a colony. In action of growth dynamics, while chemoattraction toward autoinducers creates arrested phase separation, pattern transitions and suppression can occur for a fixed chemorepulsive strength.
DOI: 10.1103/revmodphys.85.1143
发表时间: 2013-07-19
影响因子: 44.1
作者:
Marchetti, M. C.;Joanny, J. F.;Simha, R. Aditi
通讯作者: Simha, R. Aditi
DOI: 10.1038/ncomms12984
发表时间: 2016-09-30
影响因子: 16.6
作者:
Laganenka, Leanid;Colin, Remy;Sourjik, Victor
通讯作者: Sourjik, Victor