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Large amount of disease-specific protein(SP) accumulated in therice plant cells infected by rice grassy stunt virus(RGSV). It was deduced that the protein was encoded by NS6 gene on genomic vRNA6 and thus referred to as NS6 protein.But its function is unknown. In an effort to prove the above deduction and to elucidate the function of NS6 protein of RGSV, we constructed a bacterial expression plasmid pGTNS6 producing a fusion protein of glutathione S-transferase (GST) and NS6 protein, and a plant expression vector pCBTNSv6 containing NS6 gene. A recombinant plasmid pTNSv 6 containing the coding region of NS6 gene and the non-coding region at its 5' terminus, cloned by RT-PCR from purified RNAs of Shaxian isolate of RGSV, was used as the start point. Western blot analysis showed that the fusion protein reacted strongly with antisera raised against RGSV-SP, which served as evidence of the deduction.EHA105 of Agrobacterium tumefasciens containing pCBTNSv6 has been obtained and the transformation of rice is unde

作者:张春嵋;谢荔岩;林奇英;谢联辉

来源:病毒学报 2001 年 17卷 1期

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作者:
张春嵋;谢荔岩;林奇英;谢联辉
来源:
病毒学报 2001 年 17卷 1期
标签:
水稻草矮病毒 NS6基因 植物表达载体
Large amount of disease-specific protein(SP) accumulated in therice plant cells infected by rice grassy stunt virus(RGSV). It was deduced that the protein was encoded by NS6 gene on genomic vRNA6 and thus referred to as NS6 protein.But its function is unknown. In an effort to prove the above deduction and to elucidate the function of NS6 protein of RGSV, we constructed a bacterial expression plasmid pGTNS6 producing a fusion protein of glutathione S-transferase (GST) and NS6 protein, and a plant expression vector pCBTNSv6 containing NS6 gene. A recombinant plasmid pTNSv 6 containing the coding region of NS6 gene and the non-coding region at its 5' terminus, cloned by RT-PCR from purified RNAs of Shaxian isolate of RGSV, was used as the start point. Western blot analysis showed that the fusion protein reacted strongly with antisera raised against RGSV-SP, which served as evidence of the deduction.EHA105 of Agrobacterium tumefasciens containing pCBTNSv6 has been obtained and the transformation of rice is unde