Silencing of NbXrn4 facilitates the systemic infection of Tobacco mosaic virus in Nicotiana benthamiana

文献类型: 外文期刊

第一作者: Yan, Fei

作者: Yan, Fei;Lu, Yuwen;Lin, Lin;Zheng, Hongying;Chen, Jianping;Yan, Fei;Lu, Yuwen;Lin, Lin;Zheng, Hongying;Chen, Jianping;Peng, Jiejun;Chen, Hairu;Yang, Jian;Jiang, Shanshan

作者机构:

关键词: RNA silencing;TMV;VIGS;Xrn4

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

ISSN: 0168-1702

年卷期: 2011 年 158 卷 1-2 期

页码:

收录情况: SCI

摘要: The 5'-3' exoribonucleases (Xrns) play key roles in degradation and processing pathways of several classes of RNAs including mRNA, rRNA, miRNA and other small RNAs. Recent work revealed that the cytoplasmic Xrn (Xrn1p in yeast and Xrn4 in plants) affected the stability of the viral RNA of tombusviruses in yeast and plants, which indicates that the cytoplasmic Xrn might be involved in plant defense against virus by degrading viral RNA. Here, we demonstrated that silencing of Nicotiana benthamiana cytoplasmic Xrn4 facilitated both local and systemic infection of Tobacco mosaic virus (TMV) in N. benthamiana. The results support the suggestion that cytoplasmic Xrn4 participates in the viral defense system of plants. (C) 2011 Elsevier B.V. All rights reserved.

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