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^(60)Co辐照对水稻基因组DNA诱变的分子生物学效应 被引量:21

Molecular Biological Effect of ^(60)Co Gamma-ray Irradiation on Rice Genome DNA
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摘要 水稻品种农林 8号及其60 Coγ射线辐照突变体农林 8号m为研究材料 ,选用 36 0个 10碱基寡核苷酸随机引物 ,利用随机扩增多态性DNA标记技术筛选出 1个引物OPG18在农林 8号和农林 8号m之间表现出共显性的多态性 .通过对该共显性标记的克隆和序列分析表明 ,突变体农林 8号m与农林 8号相比有 2 9bpDNA片段的缺失 .研究结果为60 Coγ射线辐照导致植物基因组DNA缺失提供了一个最直接明确的证据 . A total of 360 arbitrary 10 mer oligonucleotide primers were screened using RAPD (random amplified polymorphic DNA) technique on the genome DNA of Norin 8 and its 60 Co gamma ray irradiation mutant Norin 8m . One primer OPG18 produced co dominant polymorphic markers OPG18/972 and OPG18/943 from Norin 8 and Norin 8m. Based on the clones and sequences of the OPG18/972 and OPG18/943, it shows that a 29 bp DNA fragment in the genome DNA of Norin 8m is deleted. The results directly confirmed the fact that 60 Co gamma ray irradiation can induced a bigger DNA fragment deletion of plant genome DNA.
出处 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2002年第5期754-759,共6页 Progress In Biochemistry and Biophysics
基金 国家自然科学基金 (19890 3 0 0 ) 安徽省自然科学基金资助项目 (0 0 0 41110 )~~
关键词 ^60Co辐照 水稻 基因组DNA 诱变 分子生物学效应 DNA缺失 Co gamma ray irradiation, rice (oryza sative), genome DNA, mutagenesis, DNA fragment deletion
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