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한국식물학회 / v.7, no.3, 1964년, pp.9-14 
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Chlorella의 생리적, 생화학적 제활성에 미치는${gamma}-선의 영향$
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| 이영록; 고려대학교 이공대학 생물학과;
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| The sensitivities of Chlorella ellipsoidea to ${gamma}$-ray from Cobalt-60 were determined by measuring the photosynthetic and respiratory activities and the changes in phosphate contents in various fractions of the irradited cells, which were further grown in a standard medium after irradiation, were compared to those of non-irradiated normal cells. The photosynthetic and repiratory activities of the cells were almost inversely proportional to the dose of ${gamma}$-ray irradiated and the photosynthetic activity was more sensitive than the respiratory activity of the cells. The most sensitive to ${gamma}$-ray was growth activity, followed by photosynthesis, exogenous and endogenous respirations of the cells in decreasing order. Chlorella cells were so resistant to ${gamma}$-ray comapred with other organisms that about 280,000 r dose of ${gamma}$-ray irradiaton was necessary to reduce as much as half the subsequent photosynthetic activity. When the irradiated algae were further cultured in a standard medium, the phosphate contents in the fraction of DNA, RNA and phosphoprotein decreased considerably compared with those of non-irradiated normal cells, while the phosphate contents in the fraction of polyphosphates increased than those of control. Therefore, it was deduced that ${gamma}$-ray inhibited the synthesis of DNA from polyphosphates, that the growth of Chlorella cells were consequently retarded. |
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Journal of Plant Biology / v.7, no.3, 1964년, pp.9-14
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO196411920110747)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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