Analysis of Cytogenetic Damage in Rice Seeds Induced by Energetic Heavy Ions On-ground and After Spaceflight
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概要
- 論文の詳細を見る
To analyze the biological effects of the space environment, we flew nine lines of rice seeds on the Chinese 20^<th> recoverable satellite for a duration of 18 days. The same lines of seeds were also irradiated to low doses (2.0mGy) of Carbon, or Neon or Iron ions (with different LET value of 13.3keV/μm, 31keV/μm and 500keV/μm respectively) at National Institute of Radiological Sciences in Chiba, Japan. The total number of mitotic cells and chromosomal aberrations were analyzed. The mitotic index (MI) and the frequency of chromosomal aberration were evaluated in order to compare the cytogenetic damages from spaceflight and from exposure to similar doses of charged particle on the ground. The results of the present study show that the space environment and heavy energy ion can alter cell growth, and induce various chromosome aberrations including micronuclei, chromosomal bridges, fragments and laggards. With all the lines combined, the frequency of chromosome aberrations and MI in seeds flown in space are the highest. The effectiveness of cytogenetic damage from spaceflight (SP) and the heavy ion irradiations is SP>Fe>Ne>C.
- 日本放射線影響学会の論文
著者
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SUN Ye-Qing
Department of Life Science and Engineering, Harbin Institute of Technology
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Sun Ye-qing
Department Of Life Science And Engineering Harbin Institute Of Technology:institute Of Environmental
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Sun Ye-qing
Department Of Life Science And Engineering Harbin Institute Of Technology
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YANG Qian
Department of Infectious Diseases, The First Hospital of Xi'an JiaoTong University
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FURUSAWA Yoshiya
National Institute of Radiological Sciences
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WEI Li-Jun
Department of Life Science and Engineering, Harbin Institute of Technology
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XIA Hong-Mei
Department of Life Science and Engineering, Harbin Institute of Technology
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GUAN Shuang-Hong
Department of Life Science and Engineering, Harbin Institute of Technology
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XIN Ping
Department of Life Science and Engineering, Harbin Institute of Technology
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Xin Ping
Department Of Life Science And Engineering Harbin Institute Of Technology
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Xia Hong-mei
Department Of Life Science And Engineering Harbin Institute Of Technology:research Institute Of Suga
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Xia Hong-mei
Department Of Life Science And Engineering Harbin Institute Of Technology
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Guan Shuang-hong
Department Of Life Science And Engineering Harbin Institute Of Technology
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Yang Qian
Department Of Infectious Diseases The First Hospital Of Xi'an Jiaotong University
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Wei Li-jun
Department Of Life Science And Engineering Harbin Institute Of Technology
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