杨树叶绿体3′rps12基因,rps7基因和ndhB基因片段的克隆及序列分析

被引:7
作者
周奕华
侯丙凯
石东乔
肖宇红
石锐
胡赞民
陈正华
机构
[1] 中国科学院遗传研究所!北京,中国科学院遗传研究所!北京,中国科学院遗传研究所!北京,中国科学院遗传研究所!北京,中国科学院遗传研究所!北京,中国科学院遗传研究所!北京,中国科学院遗传研究所!北京
关键词
杨树; 叶绿体; 3′rps12基因; rps7基因; ndhB基因; 基因克隆; 序列分析;
D O I
10.13865/j.cnki.cjbmb.2001.05.015
中图分类号
Q949.733 [杨柳目];
学科分类号
071001 ;
摘要
通过烟草叶绿体相关序列设计引物 ,从杨树的叶绿体基因组中克隆出 2个相邻的DNA片段 .经分析发现 ,这 2个DNA片段包含核糖体蛋白 3′rps12、rps7基因和NADH脱氢酶第二亚基ndhB基因片段 .利用DNAMAN等软件 ,将扩增到的杨树叶绿体DNA片段与烟草、拟南芥、玉米和黑松的相关序列进行比较 ,证实所扩增的片段具有较高的保守性 ,尤其是在这 3个基因的编码区 ,同源性均在 90 %以上 .插入或缺失常发生在基因间隔区 ,同源性在 80 %左右 ;对其编码区所推导的氨基酸序列进行了比较 ,同源性均在 92 %以上 .首次克隆了杨树叶绿体的部分DNA序列 ,详细报道并分析了杨树 3′rps12、rps7基因和ndhB基因片段及其边界序列信息 .所报告的基因序列均已登录GenBank .
引用
收藏
页码:606 / 616
页数:11
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