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RNA-dependent RNA polymerase 6 of rice (Oryza sativa) plays role in host defense against negative-strand RNA virus, Rice stripe virus

文献类型： 外文期刊

作者： Jiang, Lin 1 ; Qian, Dan 1 ; Zheng, Hong 1 ; Meng, Lin-Yan 1 ; Chen, Jie 2 ; Le, Wen-Jing 3 ; Zhou, Tong; Zhou, Yi-Jun;

作者机构： 1.Peking Univ, Coll Life Sci, Peking Yale Joint Ctr Plant Mol Genet & Agrobiote, State Key Lab Prot & Plant Gene Res, Beijing 100871, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Jiangsu, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanj

关键词： RDR;Rice stripe virus;RNA silencing;Viral siRNA

期刊名称：VIRUS RESEARCH （ 影响因子：3.303； 五年影响因子：3.445 ）

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收录情况： SCI

摘要： RNA-dependent RNA polymerases (RDRs) from fungi, plants and some invertebrate animals play fundamental roles in antiviral defense. Here, we investigated the role of RDR6 in the defense of economically important rice plants against a negative-strand RNA virus (Rice stripe virus, RSV) that causes enormous crop damage. In three independent transgenic lines (OsRDR6AS line A, B and C) in which OsRDR6 transcription levels were reduced by 70-80% through antisense silencing, the infection and disease symptoms of RSV were shown to be significantly enhanced. The hypersusceptibilities of the OsRDR6AS plants were attributed not to enhanced insect infestation but to enhanced virus infection. The rise in symptoms was associated with the increased accumulation of RSV genomic RNA in the OsRDR6AS plants. The deep sequencing data showed reduced RSV-derived siRNA accumulation in the OsRDR6AS plants compared with the wild type plants. This is the first report of the antiviral role of a RDR in a monocot crop plant in the defense against a negative-strand RNA virus and significantly expands upon the current knowledge of the antiviral roles of RDRs in the defense against different types of viral genomes in numerous groups of plants.

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[4]Analysis of rice stripe virus whole-gene expression in rice and in the small brown planthopper by real-time quantitative PCR. Li, S.,Li, X.,Sun, L.,Zhou, Y.,Li, S.,Sun, L.. 2012

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[7]Overexpression of OsCIPK30 Enhances Plant Tolerance to Rice stripe virus. Liu, Zhiyang,Li, Xuejuan,Sun, Feng,Zhou, Tong,Zhou, Yijun,Liu, Zhiyang,Li, Xuejuan,Sun, Feng,Zhou, Tong,Zhou, Yijun. 2017

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[9]Arabidopsis is Susceptible to Rice stripe virus Infections. Sun, Feng,Yuan, Xia,Zhou, Tong,Fan, Yongjian,Zhou, Yijun,Yuan, Xia. 2011

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