A simple and efficient method for cloning the flanking genomic sequences of a known DNA region is reported in this study. This method combined partial restriction endonuclease digestion, adaptor ligation, and a single...A simple and efficient method for cloning the flanking genomic sequences of a known DNA region is reported in this study. This method combined partial restriction endonuclease digestion, adaptor ligation, and a single round polymerase chain reaction. Total genomic DNA was partially digested with the frequent-cutting restriction enzyme Mse I. The partially digested products were ligated to an unphosphorylated adaptor. A hot start PCR amplification with Taq polymerase and dNTP was performed with a DNA-specific primer and the adaptor primer complementary to the adaptor and the Mse I recognition site. The amplified products were fractionated, cloned and sequenced. By this method, we cloned the downstream region of a gynoecious marker TG/CAC234 from cucumber （Cucumis sativus L.）.展开更多
基金partially supported by the Program 30470120,30671419,30700541 from the National Natural Science Foundation of Chinaby the 863 Programs 2006AA10Z108,2006AA100108 from the Ministry of Science and Technology of China+2 种基金by the Ph.D Funding 20050307009 from the Ministry of Education of Chinaby the Program BK2006139 from the Natural Science Foundation of Jiangsu Provinceby Research Fund KJ05006 from Nanjing Agricultural University,China.
文摘A simple and efficient method for cloning the flanking genomic sequences of a known DNA region is reported in this study. This method combined partial restriction endonuclease digestion, adaptor ligation, and a single round polymerase chain reaction. Total genomic DNA was partially digested with the frequent-cutting restriction enzyme Mse I. The partially digested products were ligated to an unphosphorylated adaptor. A hot start PCR amplification with Taq polymerase and dNTP was performed with a DNA-specific primer and the adaptor primer complementary to the adaptor and the Mse I recognition site. The amplified products were fractionated, cloned and sequenced. By this method, we cloned the downstream region of a gynoecious marker TG/CAC234 from cucumber （Cucumis sativus L.）.
