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绿藻Heterochlorella luteoviridis SAG211-2a叶绿体16S rRNA基因研究

文献类型: 中文期刊

作者: 陈强 1 ; 马帅 2 ; 谭德冠 2 ; 孙雪飘 2 ; 张家明 2 ;

作者机构: 1.海南大学农学院

2.中国热带农业科学院热带生物技术研究所/海南省热带生物质能源研究中心

关键词: 16S rRNA;16S rDNA;Ⅰ类内含子;双发夹结构

期刊名称: 广东农业科学

ISSN: 1004-874X

年卷期: 2014 年 41 卷 07 期

页码: 142-145

收录情况: 北大核心 ; CSCD

摘要: 为了研究绿藻Heterochlorella luteoviridis SAG211-2a叶绿体16S rRNA基因中内含子和双发夹结构在rRNA成熟过程中是否被切除,以来自德国歌德堡大学藻种库的绿藻藻株SAG 211-2a为材料,提取其基因组DNA作为模板,PCR扩增并测序叶绿体16S rRNA基因,与同源物种的16S rRNA基因进行比对;并提取SAG211-2a的总RNA,用一管法RT-PCR法扩增16S rDNA基因成熟转录子后,克隆至pMD19-T表达载体上,转化大肠杆菌DH5α,提取质粒并测序。结果表明,绿藻SAG211-2a叶绿体16S rRNA基因中存在1个长度为46 bp的双发夹结构(DHE)和1个长度为537 bp的Ⅰ类内含子,内含子在rRNA成熟过程中被切除,而双发夹结构却保留在rRNA中,从而验证了双发夹结构在rRNA成熟过程中没有被切除。

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