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Viral suppressors from members of the family Closteroviridae combating antiviral RNA silencing: a tale of a sophisticated arms race in host-pathogen interactions

文献类型： 外文期刊

作者： Hussain, Muhammad Dilshad 1 ; Farooq, Tahir 3 ; Chen, Xi 1 ; Tariqjaveed, Muhammad 5 ; Jiang, Tong 1 ; Liu, Sijia 1 ; Zhou, Tao 1 ;

作者机构： 1.China Agr Univ, Dept Plant Pathol, State Key Lab Agrobiotechnol, Beijing 100193, Peoples R China

2.China Agr Univ, Dept Plant Pathol, Minist Agr & Rural Affairs, Key Lab Pest Monitoring & Green Management, Beijing 100193, Peoples R China

3.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangzhou 510640, Peoples R China

4.Guangdong Acad Agr Sci, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Peoples R China

5.China Agr Univ, Dept Plant Pathol, Beijing 100193, Peoples R China

6.China Agr Univ, Minist Agr & Rural Affairs, Key Lab Pest Monitoring & Green Management, Beijing 100193, Peoples R China

7.China Agr Univ, Minist Educ, Joint Lab Int Cooperat Crop Mol Breeding, Beijing 100193, Peoples R China

关键词： Closterovirids; Antiviral RNA silencing; Viral pathogenicity; Plant immunity; Crop disease

期刊名称：PHYTOPATHOLOGY RESEARCH （ 影响因子：3.955； 五年影响因子：3.955 ）

ISSN： 2096-5362

年卷期： 2021 年 3 卷 1 期

页码：

收录情况： SCI

摘要： RNA silencing is an evolutionarily homology-based gene inactivation mechanism and plays critical roles in plant immune responses to acute or chronic virus infections, which often pose serious threats to agricultural productions. Plant antiviral immunity is triggered by virus-derived small interfering RNAs (vsiRNAs) and functions to suppress virus further replication via a sequence-specific degradation manner. Through plant-virus arms races, many viruses have evolved specific protein(s), known as viral suppressors of RNA silencing (VSRs), to combat plant antiviral responses. Numerous reports have shown that VSRs can efficiently curb plant antiviral defense response via interaction with specific component(s) involved in the plant RNA silencing machinery. Members in the family Closteroviridae (closterovirids) are also known to encode VSRs to ensure their infections in plants. In this review, we will focus on the plant antiviral RNA silencing strategies, and the most recent developments on the multifunctional VSRs encoded by closterovirids. Additionally, we will highlight the molecular characters of phylogenetically-associated closterovirids, the interactions of these viruses with their host plants and transmission vectors, and epidemiology.

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