NS3 Protein from Rice stripe virus affects the expression of endogenous genes in Nicotiana benthamiana
文献类型： 外文期刊
作者： Wu, Gentu 2 ; Zheng, Guixian 2 ; Hu, Qiao 2 ; Ma, Mingge 2 ; Li, Mingjun 2 ; Su, Xianchao 2 ; Yan, Fei 1 ; Qing, Ling 2 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Breading Base Sustainable Control P, Key Lab Biotechnol Plant Protect MOA China & Zhej, Hangzhou 310021, Zhejiang, Peoples R China
2.Southwest Univ, Coll Plant Protect, Chongqing Key Lab Plant Dis Biol, Chongqing 400716, Peoples R China
关键词： Rice stripe virus; NS3; Suppressor of RNA silencing; Nicotiana benthamiana; Transcriptomes
期刊名称：VIROLOGY JOURNAL （ 影响因子：4.099； 五年影响因子：3.719 ）
ISSN： 1743-422X
年卷期： 2018 年 15 卷
页码：
收录情况： SCI
摘要： Background: Rice stripe virus (RSV) belongs to the genus Tenuivirus. It is transmitted by small brown planthoppers in a persistent and circulative-propagative manner and causes rice stripe disease (RSD). The NS3 protein of RSV, encoded by the viral strand of RNA3, is a viral suppressor of RNA silencing (VSR). NS3 plays a significant role in viral infection, and NS3-transgenic plants manifest resistance to the virus. Methods: The stability and availability of NS3 produced by transgenic Nicotiana benthamiana was investigated by northern blot analysis. The accumulation of virus was detected by western blot analysis. Transcriptome sequencing was used to identify differentially expressed genes (DEGs) in NS3-transgenic N. benthamiana. Results: When the host plants were inoculated with RSV, symptoms and viral accumulation in NS3-transgenic N. benthamiana were reduced compared with the wild type. Transcriptome analysis identified 2533 differentially expressed genes (DEGs) in the NS3-transgenic N. benthamiana, including 597 upregulated genes and 1936 downregulated genes. These DEGs were classified into three Gene Ontology (GO) categories and were associated with 43 GO terms. KEGG pathway analysis revealed that these DEGs were involved in pathways associated with ribosomes (ko03010), photosynthesis (ko00195), photosynthesis-antenna proteins (ko00196), and carbon metabolism (ko01200). More than 70 DEGs were in these four pathways. Twelve DEGs were selected for RT-qPCR verification and subsequent analysis. The results showed that NS3 induced host resistance by affecting host gene expression. Conclusion: NS3, which plays dual roles in the process of infection, may act as a VSR during RSV infection, and enable viral resistance in transgenic host plants. NS3 from RSV affects the expression of genes associated with ribosomes, photosynthesis, and carbon metabolism in N. benthamiana. This study enhances our understanding of the interactions between VSRs and host plants.
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