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田葛缕子叶绿体基因组微卫星特征分析

Characterization Analysis of Microsatellite in Chloroplast Genome of Carum buriaticum Turcz.

  • 摘要: 以田葛缕子幼嫩叶片为试材,采用CTAB法提取叶绿体DNA,测定并分析田葛缕子叶绿体全基因组序列(153 697 bp),旨在研究田葛缕子叶绿体基因组微卫星(cpSSR)特征,为田葛缕子资源分子鉴定及遗传多样性研究提供参考依据。结果表明:MISA软件在田葛缕子叶绿体基因组序列中共识别出183个SSR位点,位点间平均分布距离为839.90 bp。其中109个cpSSR(占SSR位点总数的59.60%)主要集中于大单拷贝区(LSC),57.69%的SSR位点的重复序列主要以单碱基重复序列为主,且主要由A、T碱基组成。cpSSR长度主要为8~15 bp(占78.69%),大于15 bp的cpSSR共有31个,田葛缕子叶绿体基因组上的cpSSR位点具有多态性潜能。

     

    Abstract: The chloroplast DNA was extracted by CTAB method from the young leaves of Carum buriaticum Turcz.,and the whole chloroplast genome sequence(153 697bp)of C.buriaticum Turcz.was determined and analyzed,in order to study the characteristics of chloroplast microsatellite(cpSSR)of C.buriaticum Turcz.chloroplast genome,and to provide theoretical reference for the molecular identification and genetic diversity of C.buriaticum Turcz.resources.The results showed that a total of 183SSR loci were identified by MISA software in the chloroplast genome sequence of C.buriaticum Turcz.and the average distribution distance between loci was 839.90bp.cpSSR was mainly distributed in the large single-copy region(LSC),and the number of cpSSR in this region was109,accounting for 59.60% of the total.The most common repeat type of the cpSSR was mononucleotide repeat,accounting for 57.69%.The length of cpSSR distributed from 8-15bp and accounted for 78.69%.There were 31cpSSR of length greater than 15bp,indicating that the cpSSR of C.buriaticum Turcz.had the potency of high polymorphism.The cpSSR loci in chloroplast genome of C.buriaticum Turcz.had potential of polymorphism.

     

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