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大黄鱼耐低温性状相关微卫星标记的筛选
引用本文:高国强,常玉梅,韩启霞,池炳杰,李明云,薛良义,梁利群. 大黄鱼耐低温性状相关微卫星标记的筛选[J]. 遗传, 2010, 32(3): 248-253. DOI: 10.3724/SP.J.1005.2010.00248
作者姓名:高国强  常玉梅  韩启霞  池炳杰  李明云  薛良义  梁利群
作者单位:1. 中国水产科学研究院黑龙江水产研究所, 哈尔滨 150070; 2. 上海海洋大学水产与生命学院, 上海 201306; 3. 宁波大学生命学院, 宁波 315211
基金项目:国家高技术研究发展计划项目(863计划)(编号:2006AA10A405)资助
摘    要:鱼类的耐低温性状是一种重要的经济性状。为了初步分析大黄鱼的耐低温性状, 文章采用15对荧光微卫星标记, 以SSR-PCR方法对大黄鱼低温耐受组和正常对照组F1代共40个个体进行了耐低温性状遗传差异分析。结果显示, 标记LYC0002在两组样品中共扩增出5个等位基因(片段大小分别为112 bp、110 bp、108 bp、106 bp和104 bp), 其中LYC0002112 bp等位基因在低温耐受组的出现频率达60%, 而在正常对照组中的频率为零, 表明该等位基因对大黄鱼的温度敏感特性有较明显的偏好性, 可能与某种耐低温基因存在一定的连锁关系。此外, 对LYC0002106 bp、LYC0002108 bp、LYC0002110 bp 和 LYC0002112 bp 4个等位基因分别进行了回收、克隆及测序。序列比对结果显示, LYC0002112 bp等位基因含有10个(CA)重复单元, 而其他3个等位基因依次缺失1个(CA)重复单元, 说明LYC0002在本研究样本中的突变方式为微卫星逐步突变模型(Stepwise mutation model, SMM)。

关 键 词:大黄鱼  耐低温  微卫星  荧光染料  
收稿时间:2009-07-09
修稿时间:2009-10-27

Screening of microsatellite markers associated with cold tolerance of large yellow croaker (Pseudosciaena crocea R.)
GAO Guo-Qiang,CHANG Yu-Mei,HAN Qi-Xia,CHI Bing-Jie,LI Ming-Yun,XUE Liang-Yi,LIANG Li-Qun. Screening of microsatellite markers associated with cold tolerance of large yellow croaker (Pseudosciaena crocea R.)[J]. Hereditas, 2010, 32(3): 248-253. DOI: 10.3724/SP.J.1005.2010.00248
Authors:GAO Guo-Qiang  CHANG Yu-Mei  HAN Qi-Xia  CHI Bing-Jie  LI Ming-Yun  XUE Liang-Yi  LIANG Li-Qun
Affiliation:1. Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, China; 2. College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; 3. College of Life Sciences, Ningbo University, Ningbo 315211, China
Abstract:Cold tolerance is one of the major economic characters in fish. In order to discuss the cold tolerance of large yellow croaker (Pseudosciaena crocea R.), fifteen fluorescent dye-labeled microsatellite markers were applied to detect genetic differences between F1 offsprings of cold tolerance group and normal group of large yellow croaker by SSR-PCR. Each group contained 20 randomly and separately sampled individuals. As a result, marker LYC0002 five alleles (LYC0002104 bp, LYC0002106 bp, LYC0002108 bp, LYC0002110 bp, and LYC0002112 bp) were amplified with marker LYC0002 in both groups and 60% (12/20) of individuals had allele LYC0002112 bp in cold tolerance group exclusively, which indicated that this allele is probably sensitive to temperature and associated with gene for cold tolerance. In addition, four alleles (LYC0002106 bp, LYC0002108 bp, LYC0002110 bp, and LYC0002112 bp) were sequenced individually. Sequence alignments showed that LYC0002112 bp allele contains 10 (CA) repeats, the remaining three alleles lacked one (CA) one by one, corresponding to the stepwise mutation model (SMM) of microsatellite.
Keywords:large yellow croaker (Pseudosciaena crocea R.)  cold tolerance  microsatellite  fluorescent dye
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