Kinematic Characteristics Analysis of Magnetotactic Bacteria under Magnetic Field Reversal and Its Relationship with Flagella
Chen Haitao1,2,3, Chen Linjie1, Shi Hongkai1,2,3, Du Junwei1, Song Tao1,3
1. Beijing Key Laboratory of Bioelectromagnetism Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 2. University of Chinese Academy of Sciences Beijing 100049 China; 3. France-China International Laboratory of Evolution and Development of Magnetotactic Multicellular Organisms Beijing 100190 China
Abstract：Magnetotactic bacteria are special bacteria that can move in the direction of a magnetic field, but their magnetotactic mechanism is still controversial. In this paper, by establishing the kinematic equation of magnetotactic bacteria, the kinematic characteristics of Magnetospirillum magneticum AMB-1 under the action of reversal magnetic field were analyzed. Combined with the AMB-1 dynamic modeling analysis and experimental results, it is shown that the motility characteristics of the wild-type strain are basically consistent with the prolate ellipsoid with flagella, the response of methyl-accepting chemotaxis like Amb0994 protein deleted mutant strain to abrupt reversals of magnetic field is faster than that of the wild-type strain, similar to an ellipsoid without flagella. This behavior difference may be caused by changes in flagella function. It is indicated that, Amb0994 can participate in the cellular response to magnetic torque changes by controlling flagella. This paper helps to understand the magnetotaxis mechanism in magnetotactic bacteria and provides a theoretical analysis method for exploring the function of bacterial flagella.
陈海涛, 陈林杰, 石宏开, 杜军渭, 宋涛. 磁场反转下趋磁细菌运动学特性分析及与鞭毛的关系[J]. 电工技术学报, 2021, 36(4): 717-723.
Chen Haitao, Chen Linjie, Shi Hongkai, Du Junwei, Song Tao. Kinematic Characteristics Analysis of Magnetotactic Bacteria under Magnetic Field Reversal and Its Relationship with Flagella. Transactions of China Electrotechnical Society, 2021, 36(4): 717-723.
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2021, Vol. 36 
