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植物果实特异性启动子E8基因的克隆

DOI: 10.7668/hbnxb.2008.03.005, PP. 16-19

Keywords: 番茄,果实特异性E8启动子,基因克隆

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Abstract:

采用高盐低pH值法、分步离心法、SDS法、CTAB法、改良CTAB法提取毛粉802番茄幼苗基因组DNA,其中改良CTAB法提取的DNA效果最好,以此DNA为模板,用特异性引物进行PCR扩增,得到了预期大小的片段,将目的片段回收,克隆进pMD18-TSimpleVector载体,经PCR及酶切检测具有与目标片段长度相符的插入片段,构建的重组pMD18-E8载体经测序结果分析显示,番茄果实特异性E8启动子序列具有高度保守性,与GenBank上发表的E81.1启动子同源性为99.1%,说明成功获得了果实特异性E8启动子基因,为实现外源基因在转基因桃果实中特异性表达做准备。

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