详细信息
日本落叶松咖啡酸-O-甲基转移酶基因LkCOMT的克隆及单核苷酸多态性分析 被引量:2
Isolation and Single Nucleotide Polymorphisms Analysis of Caffeic Acid O-methyltransferase (LkCOMT) in Lar/x kaempferi
文献类型:期刊文献
中文题名:日本落叶松咖啡酸-O-甲基转移酶基因LkCOMT的克隆及单核苷酸多态性分析
英文题名:Isolation and Single Nucleotide Polymorphisms Analysis of Caffeic Acid O-methyltransferase (LkCOMT) in Lar/x kaempferi
第一作者:易敏
机构:[1]林木遗传育种国家重点实验室,中国林业科学研究院林业研究所,北京100091
年份:2013
卷号:26
期号:F10
起止页码:52-59
中文期刊名:林业科学研究
外文期刊名:Forest Research
收录:CSTPCD;;Scopus;北大核心:【北大核心2011】;CSCD:【CSCD2013_2014】;
基金:国家“973”计划项目(2009CB119100);国家863项目(2011AA100203)
语种:中文
中文关键词:日本落叶松;咖啡酸-O-甲基转移酶基因;基因克隆;单核苷酸多态性
外文关键词:Larix kaempferi ; caffeic acid O-methyltransferase; gene cloning; single nucleotide polymorphism
分类号:S791.223
摘要:依据日本落叶松转录组数据库检测到的咖啡酸-O-甲基转移酶(COMT)基因ESTs序列设计引物,分离得到一个编码该酶的新基因。其cDNA克隆全长为1350bp,包含长度为1092bp的开放阅读框,可编码364个氨基酸残基。序列分析显示,所推导的蛋白质氨基酸序列包含COMT基因5个所特有的保守元件,与海岸松PpCOMT的蛋白质氨基酸序列同源性达94%。在此基础上,利用DnaSP5.0软件对日本落叶松加株基因型个体的LkCOMT序列进行了单核苷酸多样性SNPs分析,共检测到92个SNP位点,SNP发生频率为1/17bp,多样性指数1T,为0.00780。在这些SNPs中,65个属于转换,27个属于颠换。在外显子区域,共检测到58个SNP位点,其中37个为错义突变,21个为同义突变。研究结果为Et本落叶松基因标记辅助育种提供了理论基础。
The ESTs sequences of caffeic acid O-methyhransferase from Larix kaempferi transcriptome database, an cDNA clone encoding COMT, was isolated from L. kaempferi by gene-specific PCR amplification. The COMT clone was 1 350 bp in length with an open reading frame ( ORF, 1 092 bp) which would be capable to encode a protein of 364 AA. The sequence indicated that the deduced amino acid contained five highly conserved regions of COMT family, and shared 94% identity with PpCOMT from Pinus pinaster. The genomic sequences of LkCOMT in 40 indi- viduals were sequenced, and single nucleotide polymorphisms (SNPs) diversity of LkCOMT was analyzed using the software DnaSP5.0. A total of 92 SNPs were detected, and the frequency and diversity of SNPs (~rT) were 1/17 bp and 0. 007 80, respectively. There were 65 transition and 27 transversion of mutation types. A total of 58 SNPs were detected in the coding regions of LkCOMT, of which 15 were synonymous mutation and 37 were missense mutation.
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