Diverse Novel Viruses Coinfecting the Tropical Ornamental Plant Polyscias balfouriana in China
文献类型： 外文期刊
作者： Ma, Yuxin 1 ; Che, Haiyan 1 ; Gao, Shengfeng 3 ; Lin, Yating 1 ; Li, Shifang 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China
2.Guizhou Univ, State Key Lab Breeding Base Green Pesticide & Agr, Minist Educ, Key Lab, Guiyang 550025, Peoples R China
3.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Wanning 571533, Peoples R China
4.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
关键词： Polyscias balfouriana; virus discovery; coinfection; ornamental plant; Betaflexiviridae; Closteroviridae; Capillovirus; Citrivirus; Crinivirus
期刊名称：VIRUSES-BASEL （ 影响因子：5.818； 五年影响因子：5.811 ）
ISSN：
年卷期： 2022 年 14 卷 6 期
页码：
收录情况： SCI
摘要： The viromic profile of Polyscias balfouriana cv. Marginata, a perennial woody and ornamental plant, was determined using ribosomal RNA-depleted total RNA (rRNA-depleted totRNA) sequencing. Five viruses (i.e., polyscias mosaic virus, PoMV; one potential novel rhabdovirus; and three novel viruses of Betaflexiviridae and Closteroviridae) were detected and prevalence-surveyed in Hainan province, China. The genomes of polyscias capillovirus 1 (PCaV-1) and polyscias citrivirus 1 (PCiV-1) of family Betaflexiviridae were completed, and the genomes of polyscias crinivirus 1 (PCrV-1) of Closteroviridae were nearly completed lacking the 5 ' and 3 ' termini. PCaV-1 shares 68% genome nucleotide (nt) identity and 66% replicase (Rep) amino acid (aa) identity with homologues in apple stem grooving virus (ASGV). PCiV-1 shares 65% genome nt identity and 64% Rep aa identity with homologs in citrus leaf blotch virus (CLBV). Meeting the species demarcation criteria, PCaV-1 and PCiV-1 were considered to be new species in genera Capillovirus and Citrivirus, respectively. PCrV-1 shares high genome nt identity (62%), heat shock protein 70-like protein (HSP70h) and RNA-dependent RNA polymerase (RdRp) aa identity (78-80%) with homologues in tomato chlorosis virus (ToCV). We tentatively consider PCrV-1 to be an unclassified member of the Crinivirus genus. PoMV, PCaV-1, PCiV-1, and PCrV-1 are the prevalent viruses with >73% occurrence in the Xinglong Tropical Botanical Garden, Hainan, China.
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