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种子特异表达启动子的克隆分析及其植物表达载体的构建

DOI: 10.3321/j.issn:1000-7091.2007.02.002, PP. 6-10

Keywords: 种子特异表达启动子,克隆,油菜

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Abstract:

根据GenBank已公布的种子特异性的Oleosin蛋白基因启动子序列设计合成引物,利用PCR技术从油菜总基因组DNA中扩增出Oleosin基因启动子序列(SOP),将该序列克隆到pGM-T载体中,经鉴定获得pGM-T-SOP重组载体。测序和序列分析表明,该启动子序列由899bp核苷酸组成,其核苷酸序列与GenBank中的Oleosin基因启动子序列同源性高达95.6%。分别用限制性内切酶HindⅢ和BamHI双酶切重组质粒pGMT-SOP和双元植物表达载体pBI121,分别回收pGMT-SOP重组质粒中的SOP小片段和pBI121植物表达载体中去掉CaMV35S组成型启动子的大片段,经连接、转化和鉴定,获得由SOP驱动报告基因GUS的新型植物表达载体pBI121-SOP,为外源基因在油菜种子中的定位表达研究奠定基础。

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