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Isolation and characterization of polymorphic microsatellite DNA markers of Anopheles sinensis (Diptera: Culicidae)
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 17
- DOI:
- 10.3321/j.issn:1000-2790.2008.17.001
- Key Word:
- 中华按蚊;微卫星DNA
Abstract： 目的:对中华按蚊多态的微卫星DNA位点进行分离和筛选,并阐明其特征.方法:应用中华按蚊基因组DNA的酶切片段与生物素标记的寡核苷酸探针杂交,亲合素富集和超滤离心浓缩目的片段,扩增放大,克隆并测序,构建中华按蚊微卫星DNA库.在其中挑选合适的微卫星位点,建立扩增体系.应用中华按蚊现场样本扩增不同的微卫星位点,聚丙烯酰胺凝胶电泳筛选具有多态性的微卫星位点.结果:构建的中华按蚊微卫星DNA库中包含252条序列,GenBank注册登记号为EF620047～EF620298.其中,双核苷酸重复最为常见,三核苷酸重复次之,多核苷酸重复少见;含(CA)和(GT)重复的序列最多,重复次数最多可达56次;完整序列占35.3%,非完整序列占20.2%,复合序列占18.7%,其余为非典型序列.设计了22对引物扩增不同的微卫星位点,其中20个位点产生特异的PCR产物,PAGE结果显示其中15个位点具有多态性.结论:获得了中华按蚊新的多态微卫星位点共15个,为中华按蚊群体遗传和其他相关研究提供了分子标志.
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