On the origin of microbial magnetoreception  

作　　者：Wei Lin Joseph L.Kirschvink Greig A.Paterson Dennis A.Bazylinski Yongxin Pan 

机构地区：[1]Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [2]Institutions of Earth Science.Chinese Academy of Sciences,Beijing 100029.China [3]France-China Joint Laboratory for Evolution and Development of Magnetotactic Multicellular Organisms,Chinese Academy of Sciences,Beijing 100029,China [4]Division of Geological&Planetary Sciences,California Institute of Technology.Pasadena,CA 91125,USA [5]Earth-Life Science Institute,Tokyo Institute of Technology.Tokyo 152-8551.Japan [6]Department of Earth,Ocean and Ecological Sciences,University of Liverpool,Liverpool,L6972E,UK [7]School of Life Sciences,University of Nevada at Las Vegas,Las Vegas,NV 89154-4004,USA [8]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences.Beijing 100049,China

出　　处：《National Science Review》2020年第2期472-479,共8页国家科学评论（英文版）

基　　金：financial support from the Strategic Priority Research Program of Chinese Academy of Sciences(XDA17010501);the National Natural Science Foundation of China(NSFC)(41621004);support from the NSFC(41822704);the Youth Innovation Promotion Association of the Chinese Academy of Sciences;supported by the US National Aeronautics and Space Administration Exobiology(EXO14 2-0176);support from the NSFC(41574063);the Natural Environment Research Council(NERC)Independent Research Fellowship(NE/P017266/1);supported by the US National Science Foundation(NSF)(EAR-1423939).

摘　　要：A broad range of organisms;from prokaryotes to higher animals;have the ability to sense and utilize Earth's geomagnetic field-a behavior known as magnetoreception.Although our knowledge of the physiological mechanisms of magnetoreception has increased substantially over recent decades;the origin of this behavior remains a fundamental question in evolutionary biology.Despite this;there is growing evidence that magnetic iron mineral biosynthesis by prokaryotes may represent the earliest form ofbiogenic magnetic sensors on Earth.Here,we integrate new data from microbiology;geology and nanotechnology,and propose that initial biomineralization of intracellular iron nanoparticles in early life evolved as a mechanism for mitigating the toxicity of reactive oxygen species(ROS),as ultraviolet radiation and free-iron-generated ROS would have been a major environmental challenge for life on early Earth.This iron-based system could have later been co-opted as a magnetic sensor for magnetoreception in microorganisms;suggesting an origin of microbial magnetoreception as the result of the evolutionary process of exaptation.

关 键 词：MAGNETORECEPTION BIOMINERALIZATION magnetotactic BACTERIA EXAPTATION 

分 类 号：Q935[生物学—微生物学]