Earth's near space(20-100 km above sea level(ASL))is one of the most extreme environments on Earth due to a combination of high radiation,low atmospheric pressure,extreme cold and hyper aridity[1].Investigations of the survival strategies of microorganisms in near space are of great interest in respect of understanding the limits of life on Earth,identifying the upper boundary of Earth's biosphere,testing the panspermia hypothesis,and assessing long-distance microbial transfer[2].High-altitude balloon based research on microorganisms in near space dates back to the 1930's[3].Ultraviolet(UV)radiation has been shown to be one of the main causes of biological mortality in near space.Thus to date many extremophilic microorganisms including bacte-ria,archaea and fungi have been tested for their tolerance to extreme conditions in the stratosphere region of lower near space[4].

Jia Liu;Wensi Zhang;Kuang He;Li Liu;Chao Wang;Yuanda Jiang;Shijiao Ma;Jiesheng Tian;Ying Li;Tongwei Zhang;Lanxiang Tian;Fei He;Greig A.Paterson;Yong Wei;Yongxin Pan;Wei Lin

Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;CAS Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;France-China Joint Laboratory for Evolution and Development of Magnetotactic Multicellular Organisms,Chinese Academy of Sciences,Beijing 100029,China;Frontiers Science Center for Deep Ocean Multispheres and Earth System,Key Lab of Submarine Geosciences and Prospecting Techniques(Ministry of Education),College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Electronics and Information Technology for Space Systems,National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China;State Key Laboratories for Agro-biotechnology,College of Biological Sciences,China Agricultural University,Beijing 100193,China;Department of Earth,Ocean and Ecological Sciences,University of Liverpool,Liverpool L69 7ZE,UK

科学通报（英文版）

[1]Jia Liu;Wensi Zhang;Kuang He;Li Liu;Chao Wang;Yuanda Jiang;Shijiao Ma;Jiesheng Tian;Ying Li;Tongwei Zhang;Lanxiang Tian;Fei He;Greig A.Paterson;Yong Wei;Yongxin Pan;Wei Lin-.Survival of the magnetotactic bacterium Magnetospirillum gryphiswaldense exposed to Earth's lower near space)[J].科学通报（英文版）,2022(13):1335-1339

magnetotactic,Magnetospirillum,gryphiswaldense,panspermia,extremophilic

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