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  • [Int J Radiat Biol.] Suggested doses of proton ions and gamma-rays for mutation induction in 20 plant species 20가지 식물종의 돌연변이 유도를 위한 양성자 이온과 감마선의 적정 조사량

    KAERI / 김상훈, 강시용*

  • 출처
    Int J Radiat Biol.
  • 등재일
    2021
  • 저널이슈번호
    97(11):1624-1629. doi: 10.1080/09553002.2021.1969053. Epub 2021 Sep 7.
  • 내용

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    Abstract
    Purpose: Proton ions are expected to be used as a discriminative radiation source to induce different kinds of mutations than those produced by γ-rays and carbon ions; however, there is little systemic information about radiosensitivity in plants.

    Materials and methods: We analyzed the LD30, LD50, and RD50 values in response to proton ions and γ-rays using 20 plant species. Plant seeds were irradiated, and growth responses were measured one month after planting, except for cymbidium, for which in vitro rhizomes were irradiated. The rhizomes were analyzed at six and nine months after subculturing.

    Results: Resistance to proton ions and γ-rays was observed in Chinese cabbage, watermelon, and melon, while Japanese atractylodes, naked barley, and lentil were susceptible. Plants belonging to the Brassicaceae and Cucurbitaceae families were highly resistant to radiation, and plants belonging to the Compositae and Poaceae families were highly susceptible. In addition, plants with genome sizes greater than 8,000 Mbp were highly sensitive to radiation, but there was no clear relationship between radiosensitivity and genome size in plants with genomes smaller than 2,500 Mbp.

    Conclusions: The biological effectiveness of proton ions was greater than that of γ-rays in 16 plant species, indicating that they could be used as a discriminative radiation source to induce mutations compared with γ-rays.

     

     

    Affiliations

    Sang Hoon Kim  1 , Sun Young Kim  1 , Jaihyunk Ryu  1 , Yeong Deuk Jo  1 , Hong-Il Choi  1 , Jin-Baek Kim  1 , Si-Yong Kang  1   2
    1 Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea.
    2 Department of Horticulture, College of Industrial Sciences, Kongju National University, Yesan, Republic of Korea.

  • 키워드
    Radioresistance; gamma-ray; mutation; plant; proton; radiosensitivity.
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