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Çѱ¹½Ä¹°ÇÐȸ / v.43, no.4, 2000³â, pp.226-231
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( DNA Endonuclease- and Active Oxygen-Associated Degradation of Chloroplast DNA in Response to Paraquat-Induced Oxidative Stress ) |
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| Activity of chloroplast-localized DNA endonuclease was observed in detached tobacco leaves that had been treated with paraquat and light. The DNA endonuclease was able to cleave the chloroplast, plasmid, and single-stranded DNA, as estimated on an agarose gel. Activity was sensitive to two endonuclease inhibitors: aurintricarboxylic acid and ZnSO$_4$. The time course for activity showed a peak 4 h after the stress treatment. These results suggest that this enzyme plays a specific physiological role during oxidative stress. Probable roles for this enzyme are also discussed. |
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| DNA endonuclease;oxidative stress;paraquat; |
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Journal of Plant Biology / v.43, no.4, 2000³â, pp.226-231
Çѱ¹½Ä¹°ÇÐȸ
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011921106751)
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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