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与水稻K型细胞质雄性不育性特异的mtDNA片段的鉴定

Identifying the mtDNA Fragment Which Links to Cytoplasmic Male Sterility in Rice K Type CMS Germplasm

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【作者】 舒友菊蒲志刚蔡平钟向跃武王贵学倪先林郑家奎

【Author】 Su Youju 1,2,3 Pu Zhigang 1 Cai Pingzhong 1* Xiang Yuewu 1 Wang Guixue 3 Ni Xianlin 1 Zheng Jiakui 2,3* 1 Biotechnology and Nuclear Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066; 2 Rice and Sorghum Institute, Sichuan Academy of Agricultural Sciences, Luzhou, 646000; 3 Department of Biological Engineering, Chongqing University, Chongqing, 400044

【机构】 四川省农业科学院生物技术核技术研究所重庆大学生物工程学院四川省农业科学院水稻高粱研究所 成都610066四川省农业科学院水稻高粱研究所泸州646000重庆大学生物工程学院重庆400044成都610066

【摘要】 水稻K型雄性不育材料是新发现的一类核质互作不育类型。本研究以水稻K型雄性不育的不育系(K17A)、保持系(K17B)以及杂交F1代(K优17)为研究对象。采用SDS法提取各水稻材料的线粒体DNA(mtDNA),mtDNA经纯化后利用EcoRⅠ和MseⅠ进行双酶切,并进行AFLP分析。利用AFLP分子标记技术从上述材料的mtDNA中找到了K17A、K优17所共有的特异片段,回收并纯化该片段。特异片段经克隆测序后,得知该特异片段序列为442bp所组成。利用GenBank对其进行序列对比分析,表明该序列与水稻其他已知核质互作不育类型特异片段序列不相关,并且该序列与水稻的两种未知功能蛋白的表达相关。

【Abstract】 A new type material of male sterility lines named K type was detected recently. The sterility line (K17A), maintainer line (D17B) and F 1 hybrid (Kyou17) in K type cytoplamic male sterility of rice were studied. The mtDNA of each rice line was extracted by SDS method and recovery, purif ication and digestion by EcoR Ⅰ and Mse Ⅰ were carried out, and f inally they were detected by AFLP approach to fi nd the specifi c fragment linked to the CMS. The results indicated that the specifi c fragment of K17A and Kyou17 should be in common, which is 442 bp length. Sequencing analysis showed the fragment we got is not related to known specifi c fragment of nucleo

【关键词】 水稻K型雄性不育mtDNAAFLP标记
【Key words】 Rice K type male sterilitymtDNAAFLP marker
【基金】 四川省科技厅生物技术专项;四川省育种攻关专项;四川省农科院青年基金等项目资助。
  • 【文献出处】 分子植物育种 ,Molecular Plant Breeding , 编辑部邮箱 ,2007年01期
  • 【分类号】S511
  • 【被引频次】7
  • 【下载频次】195
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