Molecular characterization of a novel polerovirus from bitter gourd plants and dynamic subcellular localization of the virus-encoded proteins
文献类型: 外文期刊
第一作者: Qiao, Rui
作者: Qiao, Rui;Pan, Mengjiao;Jiang, Shoulin;Liang, Wenxing;Li, Fangfang;Qiao, Rui;Ge, Linhao;Pan, Mengjiao;Jiang, Shoulin;Chen, Jieyin;Zhou, Xueping;Li, Fangfang;Zhou, Xueping
作者机构:
关键词: A novel polerovirus; Bitter gourd yellowing crumple virus; Dynamic subcellular localization; Silencing suppression activity
期刊名称:PHYTOPATHOLOGY RESEARCH ( 影响因子:3.4; 五年影响因子:4.2 )
ISSN: 2096-5362
年卷期: 2023 年 5 卷 1 期
页码:
收录情况: SCI
摘要: Viruses within the Polerovirus genus in the family of Solemoviridae have a single-stranded positive-sense RNA genome of about 5.6-6.2 kb in length. In this study, the bitter gourd leaves showing yellowing and crumple symptoms were collected for small RNAs (sRNAs) sequencing. Analysis of the contigs de novo assembled from sRNA-sequencing data, followed by RT-PCR and cloning, determined the complete viral genome to be 5665 nucleotides. This virus isolate contains conserved ORF3a, ORF3, ORF4, and other typical features of poleroviruses. The P0 protein of this virus isolate shares less than 74.80% amino acid sequence identity with any of the previously characterized poleroviruses, indicating that it should be a novel polerovirus. We name this virus as bitter gourd yellowing crumple virus (BYCV). We further revealed the dynamic subcellular localization and protein accumulation of seven proteins encoded by BYCV in Nicotiana benthamiana plants over time, and these viral proteins displayed specific subcellular localization. Expressing the BYCV P0 protein using a potato virus X vector caused severe symptoms in N. benthamiana plants, while P0 exhibited weak RNA silencing suppression activity. These findings provide an example for investigating the dynamic subcellular localizations of viral proteins and demonstrate that P0 is a critical protein potentially playing an important role in virus infection.
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