Assessing bacterial magnetotactic behavior by using permanent magnet blocks

作     者：Tao Song Hong-Miao Pan Zheng Wang Tian Xiao Long-Fei Wu 

作者机构：Beijing Key Laboratory of BioelectromagnetismInstitute of Electrical EngineeringChinese Academy of Sciences France-China Bio-Mineralization and Nano-Structures Laboratory Key Laboratory of Marine Ecology & Environmental SciencesInstitute of OceanologyChinese Academy of Sciences Laboratory of Bacterial ChemistryUMR7283Institute of Mediterranean MicrobiologyAix-Marseille UniversityCNRSF-13402 Marseille Cedex 20France 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：2014年第59卷第17期

页      面：1929-1935页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Basic Research Program of China (51037006) the National Natural Science Foundation of China (41276170) 

主　　题：趋磁细菌 铁块 行为 评估 永久 细胞聚集 磁场计算 铁磁流体 

摘      要：Assessing the movement of magnetotactic bacteria(MTB)under magnetic fields is a key to exploring the function of the *** this study,a simple method was used to analyze the behavior of MTB,which was based on the accumulation of cells on the walls of a test tube when two permanent magnet blocks were applied on the *** results showed a significant difference among the movements of the polar MTB,axial MTB,and *** polar magnetotactic cells aggregated as spots above or below the two magnet blocks besides the aggregated spots underneath the magnet *** contrast,the axial magnetotactic cells aggregated only as two round spots underneath the magnet blocks,and more cells aggregated in the center than all around of the *** the ferrofluid,two spots were also formed underneath the magnet blocks,and the aggregated particles formed a ring *** calculation by finite element method was used to analyze the phenomenon,and the findings were reasonably explained by the MTB features and magnetic field theory.A scheme that differentiates polar MTB,axial MTB,and magnetic impurity could be developed,which would be beneficial to fieldworks involving MTB in the future.