鲫鱼基因组DNA的扩增及在SSR分析中的验证

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【目的】优化鲫鱼全基因组DNA扩增方法。【方法】使用内切酶酶切初孵仔鱼的基因组DNA,酶切片段连接寡核苷酸接头,根据酶切位点序列与接头序列设计引物,采用PCR法扩增酶切片段,增加基因组DNA的数量。【结果】使用Taq I内切酶酶切鲫鱼基因组DNA,酶切片段连接寡核苷酸接头后PCR扩增,获得扩增产物集中于250~1 500 bp。以扩增的滇池高背鲫鱼基因组DNA为模板,PCR扩增滇池高背鲫鱼的微卫星分子标记(SSR)位点,获得预期的扩增片段,电泳图谱与对照组(未扩增的基因组DNA为PCR模板)无差异。【结论
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