施氏鲟、西伯利亚鲟、达氏鳇及其杂交种种质鉴定方法的建立及其应用
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贵州省农业科学院水产研究所, 贵州省特种水产工程技术中心, 贵州 贵阳 550025

作者简介:

孔杰(1986-),女,助理研究员,研究方向为鱼类生物技术和遗传育种.E-mail:kellykj@126.com

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S96;S917

基金项目:

贵州省科技计划项目(黔科合支撑[2016]2584);现代农业产业技术体系专项(CARS-46);贵州省科研机构服务企业行动计划项目(黔科合平台人才[2016]5714);贵州省特色水产产业技术体系项目(GZ-CYTX2018-011).


Application of germplasm identification in Amur sturgeon (Acipenser schrenckii), Siberian sturgeon (Acipenser baerii), and Kaluga (Huso dauricus), and their hybrids
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Fisheries Research Institute of Guizhou Academy of Aquaculture Sciences, Guizhou Engineering Technology Center of Special Aquaculture, Guiyang 550025, China

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    摘要:

    以施氏鲟(Huso dauricus)为研究材料,分别从线粒体基因组及核基因组两个层面进行物种分子鉴定方法研究。在线粒体基因组层面,对3种鲟及未知鲟种类共计119个样品的D-Loop区进行测序,通过同源序列比对,构建NJ进化树、计算群体间遗传距离,以鉴定其中30尾未知种类。在核基因组层面,利用15对微卫星标记扩增3种鲟DNA,筛选出特异性标记Ls19和SX226。Ls19在施氏鲟中扩增出特异条带126 bp、130 bp,在西伯利亚鲟中扩增出特异条带139 bp、143 bp,在达氏鳇中扩增出特异条带124 bp、127 bp;SX226在施氏鲟中扩增出特异条带185 bp,在西伯利亚鲟中扩增出特异条带260 bp、273 bp、283 bp,在达氏鳇中扩增出特异条带180 bp、182 bp。通过特异条带对未知鲟进行鉴定,结果显示:30尾未知鲟种类中,有西伯利亚鲟17尾,施氏鲟1尾,达氏鳇1尾,达氏鳇×施氏鲟2尾,施氏鲟×达氏鳇1尾,施氏鲟×西伯利亚鲟8尾。结果表明,特异性微卫星引物Ls19和SX226可以应用于施氏鲟、西伯利亚鲟、达氏鳇的纯种及杂交种分子水平种质鉴定。

    Abstract:

    In this paper, we analyzed the mitochondrial and nuclear genomes of Amur sturgeon () and Kaluga () to establish genetic markers that can be used for germplasm identification. In the D-Loop region of the mitochondrial genome, 119 samples from the three known sturgeon species as well as samples from 30 unknown sturgeon species were sequenced. The unknown species were identified by multiple sequence alignment, constructing NJ phylogenetic trees, and calculating genetic distance. In the nuclear genome, fifteen microsatellite markers were used to analyze differences in the genomes of the three known species. Two primers were obtained, Ls19 and SX226, which amplified specific bands in the three known species. In Amur sturgeon, the specific bands of Ls19 amplification products were 126 bp and 130 bp. In Siberian sturgeon, they were 139 bp and 143 bp, and in Kaluga, they were 124 bp and 127 bp. For SX226, the specific band of amplification products was 185 bp in Amur sturgeon. In Siberian sturgeon, the specific bands of SX226 amplification products were 260 bp, 273 bp and 283 bp,and in Kaluga, they were 180 bp and 182 bp. Based on the above results, the unknown sturgeon germplasm samples were identified as:17 , 2 Huso dauricus, and 8 . These results show that the Ls19 and SX226 microsatellite primers can be used in the molecular identification of germplasm from Amur sturgeon, Siberian sturgeon, Kaluga, and their hybrids.

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孔杰,李世凯,王金乐,曾诗雨,刘霆.施氏鲟、西伯利亚鲟、达氏鳇及其杂交种种质鉴定方法的建立及其应用[J].中国水产科学,2020,27(7):771-778
KONG Jie, LI Shikai, WANG Jinle, ZENG Shiyu, LIU Ting. Application of germplasm identification in Amur sturgeon (Acipenser schrenckii), Siberian sturgeon (Acipenser baerii), and Kaluga (Huso dauricus), and their hybrids[J]. Journal of Fishery Sciences of China,2020,27(7):771-778

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  • 在线发布日期: 2020-07-15
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