Total RNA in tulips was extracted by Trizol method.Primers were designed according to the sequences of Tobacco rattle virus and 18S rRNA gene of plant.The corresponding sections were amplified by RT-PCR and the PCR pr...Total RNA in tulips was extracted by Trizol method.Primers were designed according to the sequences of Tobacco rattle virus and 18S rRNA gene of plant.The corresponding sections were amplified by RT-PCR and the PCR products were labeled by Cy3-dCTP.The probes of plant virus,18S rRNA gene and comparisons were designed and immobilized on chips.Labeled PCR products were hybridized with the probes and the signals were scanned by scanner and analyzed by GenePix Pro 4.0 software.Tobacco rattle virus was detected from tulips which were imported from Holand.The accuracy and sensitivity of the plant virus gene chip were proved.展开更多
以感染百合无症病毒(LSV)的百合叶片为试材,克隆LSV16 k D基因,连接到原核表达载体p ET-28a(+)上。将获得的重组质粒p ET-28a(+)+16 k D转化大肠杆菌BL21(DE3),经IPTG诱导得到了高效表达的16 k D蛋白,融合蛋白分子量约为20 k D。融合蛋...以感染百合无症病毒(LSV)的百合叶片为试材,克隆LSV16 k D基因,连接到原核表达载体p ET-28a(+)上。将获得的重组质粒p ET-28a(+)+16 k D转化大肠杆菌BL21(DE3),经IPTG诱导得到了高效表达的16 k D蛋白,融合蛋白分子量约为20 k D。融合蛋白经过镍柱纯化后作为抗原免疫注射小鼠,制备得到16 k D蛋白抗血清。Western blot分析显示所制备的抗血清与诱导表达的融合蛋白发生特异性反应;通过ELISA检测和RT-PCR检测百合样品,证实制备的抗血清与LSV侵染的百合叶片发生了相同的特异性反应。结果表明,目的蛋白表达成功,所制备的抗血清具有特异性,可用于LSV的快速检测、免疫组织化学以及16 k D蛋白功能研究。展开更多
文摘Total RNA in tulips was extracted by Trizol method.Primers were designed according to the sequences of Tobacco rattle virus and 18S rRNA gene of plant.The corresponding sections were amplified by RT-PCR and the PCR products were labeled by Cy3-dCTP.The probes of plant virus,18S rRNA gene and comparisons were designed and immobilized on chips.Labeled PCR products were hybridized with the probes and the signals were scanned by scanner and analyzed by GenePix Pro 4.0 software.Tobacco rattle virus was detected from tulips which were imported from Holand.The accuracy and sensitivity of the plant virus gene chip were proved.
文摘以感染百合无症病毒(LSV)的百合叶片为试材,克隆LSV16 k D基因,连接到原核表达载体p ET-28a(+)上。将获得的重组质粒p ET-28a(+)+16 k D转化大肠杆菌BL21(DE3),经IPTG诱导得到了高效表达的16 k D蛋白,融合蛋白分子量约为20 k D。融合蛋白经过镍柱纯化后作为抗原免疫注射小鼠,制备得到16 k D蛋白抗血清。Western blot分析显示所制备的抗血清与诱导表达的融合蛋白发生特异性反应;通过ELISA检测和RT-PCR检测百合样品,证实制备的抗血清与LSV侵染的百合叶片发生了相同的特异性反应。结果表明,目的蛋白表达成功,所制备的抗血清具有特异性,可用于LSV的快速检测、免疫组织化学以及16 k D蛋白功能研究。
