Thladiantha Dubia Mosaic Virus: A Novel Potyvirus Infecting Manchurian Tubergourd (Thladiantha dubia) in Northeast China
文献类型： 外文期刊
作者： Zhao, Na 1 ; Zheng, Baojiang 1 ; Lin, Baoxiang 3 ; Zhao, Min 1 ; Jiang, Lude 4 ;
作者机构： 1.Northeast Forestry Univ, Coll Life Sci, Harbin, Heilongjiang, Peoples R China
2.Baicheng Normal Univ, Coll Life Sci, Baicheng, Jilin, Peoples R China
3.Heilongjiang Acad Agr Sci, Hort Branch, Harbin, Heilongjiang, Peoples R China
4.Baicheng Ordnance Test Ctr, Baicheng, Jilin, Peoples R China
关键词： Potyvirus; Thladiantha dubia; Thladiantha dubia mosaic virus (ThDMV); biological characterization; complete nucleotide sequence; field survey
期刊名称：PLANT DISEASE （ 影响因子：4.438； 五年影响因子：4.7 ）
ISSN： 0191-2917
年卷期： 2019 年 103 卷 11 期
页码：
收录情况： SCI
摘要： A new virus with flexuous, filamentous particles approximately 650 nm long was discovered in Manchurian tubergourd (Thladiantha dubia Bunge) leaves exhibiting severe mosaic symptoms. The whole genome sequence of the virus was determined by reverse transcriptionpolymerase chain reaction (RT-PCR) and rapid amplification of cDNA ends (RACE). The entire genome consisted of 10,112 nucleotides (nt) excluding the poly (A) tail, which shared the highest nucleotide sequence identity (73.8%) with that of papaya leaf distortion mosaic virus Hainan-DF isolate (PLDMV-Hainan-DF). A phylogenetic analysis showed that this virus clustered with PLDMV isolates in a subbranch within the potyviral Glade. Of the 23 species of indicator plants tested, only potato and its original host were systemically infected by the virus tested upon mechanical inoculation. A field survey showed that the virus was widely distributed on T. dubia and potatoes in Northeast China. Moreover, this virus displayed a high degree of genetic variation as evaluated by the sequences of the coat protein (CP) gene. Based on these results, the name Thladiantha dubia mosaic virus (ThDMV) is proposed for this new potyvirus.
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