Areca Palm Necrotic Ringspot Virus, Classified Within a Recently Proposed Genus Arepavirus of the Family Potyviridae, Is Associated With Necrotic Ringspot Disease in Areca Palm
文献类型： 外文期刊
作者： Yang, Ke 1 ; Shen, Wentao 3 ; Li, Ye 4 ; Li, Zengping 1 ; Miao, Weiguo 1 ; Wang, Aiming 5 ; Cui, Hongguang 1 ;
作者机构： 1.Hainan Univ, Minist Educ, Key Lab Green Prevent & Control Trop Plant Dis &, Haikou 570228, Hainan, Peoples R China
2.Hainan Univ, Coll Plant Protect, Haikou 570228, Hainan, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China
4.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
5.Agr & Agri Food Canada, London Res & Dev Ctr, London, ON N5V 4T3, Canada
关键词： Areca catechu; HC-Pro; Potyviridae
期刊名称：PHYTOPATHOLOGY （ 影响因子：4.025； 五年影响因子：4.394 ）
ISSN： 0031-949X
年卷期： 2019 年 109 卷 5 期
页码：
收录情况： SCI
摘要： Areca palm (Areca catechu), one of the two most important commercial crops in Hainan, China, has been severely damaged by a variety of pathogens and insects. Here, we report a new disease, tentatively referred to as areca palm necrotic ringspot disease (ANRSD), which is highly epidemic in the main growing regions in Hainan. Transmission electron microscopy observation and small RNA deep sequencing revealed the existence of a viral agent of the family Potyviridae in a diseased areca palm plant (XC1). The virus was tentatively named areca palm necrotic ringspot virus (ANRSV). Subsequently, the positive-sense single-stranded genome of ANRSV isolate XC1 was completely determined. The genome annotation revealed the existence of two cysteine proteinases in tandem (HC-Pro1 and HC-Pro2) in the genomic 5' terminus of ANRSV. Sequence comparison and phylogenetic analysis suggested the taxonomic classification of ANRSV into the recently proposed genus Arepavirus in the family Potyviridae. Given the close relationship of ANRSV with another newly reported arepavirus (areca palm necrotic spindle-spot virus), the exact taxonomic status of ANRSV needs to be further investigated. In this study, a reverse transcription polymerase chain reaction assay for ANRSV-specific detection was developed and a close association between ANRSV and ANRSD was found.
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