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김진규,김원록,이영근,김재성,송희섭,정철영,김기남,서원선,홍광표 ( Jin Kyu Kim,Won Rok Kim,Young Keun Lee,Jae Sung Kim,Hi Sup Song,Cheorl Young Jeong,Ki Nam Kim,One Sun Suh,Kwang Phyo Hong ) 한국환경생물학회 1998 환경생물 : 환경생물학회지 Vol.16 No.2
Tradescantia in BNL 4430 is a hybrid clone heterozygous for its flower color and extremely sensitive to ionizing radiation. Such a fact made people around nuclear power plants be interested in Tradescantia, a botanical tester of radiation effects. The pur pose of this study is to provide the botanical supplement to physical radiation monitor systems and also to ascertain biological safety regarding environmental radiation around nuclear power plants. Flowers collected periodically from three Tradescantia gardens (in Youngkwang NPP Jeonsigwan. City office and KAERI. respectively) were scored for pink mutation frequencies in stamen hair cells. Pink mutation frequencies in the study area were in the range of 0.82∼1.14. which were slightly lower than the annual mean background mutation frequency of 1.16. Statistical analysis of scoring data showed that there was no significant difference between three Tradescantia gardens (p>0.05). From the result, the environmental radiation level around Youngkwang nuclear power plant can be said biologically safe. Further study for verifying safety will make a role for improving public acceptance related to the peaceful use of nuclear power.
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NaCl 처리와 감마선조사가 자주달개비 수술털 세포의 분홍돌연변이 유기에 미치는 영향
김진규(Jin Kyu Kim),김원록(Won Rok Kim),김재성(Jae Sung Kim),김기남(Ki Nam Kim),홍광표(Kwang Phyo Hong) 한국환경농학회 1999 한국환경농학회지 Vol.18 No.1
To investigate the combined effect of gamma ray irradiation and NaCl treatment on Tradescantia somatic cell pink mutations, potted plants of Tradescantia 4430 were evenly sprayed with NaCl solution(170mM) 24 hours before irradiation(NaCl+γ) and after irradiation(γ+NaCl). Irradiation doses were 0.3, 0.5, 1.0 and 2.0 Gy of gamma-ray. The plants irradiated only with gamma radiation were used as control group(CT). Frequency of pink mutation increased linearly with irradiation close and the peak interval of elevated mutation frequencies appeared during 6∼12 days aver irradiation in all the experimental groups. The slope of dose-response curve in CT was 5.99(r²=0.99), while it were 4.55(r²=0.98) in NaCl+γ and 4.33(r²=0.99) in γ+NaCl. It seemed that pre- and post-treatment of NaCl had a protective effect it against radiation-induced cell damages since it decreased the slope value by more than 24%. It is suggested that protective effect on DNA damages can be invoked in irradiated stamen hair cells by NaCl treatment.
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