Characterization of a Novel Tombusviridae Species Isolated From Paris polyphylla var. yunnanensis

Author(s):  
Mingfu Zhao ◽  
Lu Chen ◽  
Rex Frimpong Anane ◽  
Zhe Wang ◽  
Zeli Chen ◽  
...  

Abstract A novel virus, Paris virus 2 (ParV2), was isolated from diseased Paris polyphylla var. yunnanensis, and its complete genome sequence was determined and analyzed. ParV2 is a positive-sense single-stranded RNA (+ssRNA) virus with a genome size of 4118 nucleotides. The ParV2 genome contains six putative open reading frames (ORFs) that encode proteins with predicted molecular weights of 40.14, 100.26, 7.31, 7.85, 26.09, and 8.77 kDa. The first ORF (ORF1) of ParV2 encodes a putative protein of 40.14 kDa (p40, nt: 20-1096), whiles the second ORF (ORF2, 888 aa) containing the GDD motif encodes the highly conserved RNA-dependent RNA polymerase protein (RdRP, nt:20-2683, p100, 100.26 kDa) of viruses in the family Tombusviridae. Multiple sequence alignments analysis showed that the complete genome sequence of ParV2 shares 31.7-55.5% nucleotide sequence identities with viruses in the family Tombusviridae. Ginger chlorotic fleck-associated tombusvirus (GCFaV-1,Accession No.QKE30557) had the highest sequence identity (55.5%) with ParV2, and also shares 59.2% RdRp and 34.9% CP amino acid sequence identity with GCFaV-1.Sequence comparisons and phylogenetic analysis of RdRp suggested that ParV2 is a novel member of the family Tombusviridae, and its closest known relative is GCFaV-1.

2021 ◽  
Author(s):  
Zeli Chen ◽  
Lu Chen ◽  
Rex Frimpong Anane ◽  
Zhe Wang ◽  
Like Gao ◽  
...  

Abstract Paris mitovirus 1 (ParMV1) is a positive-sense RNA virus isolated from diseased Paris polyphylla var. yunnanensis plants in Wenshan, Yunnan. The complete genome sequence of ParMV1 consists of 2,751 nucleotides with a genome structure typical of the mitoviruses. ParMV1 genome has a single open reading frame (ORF: 358-2,637 nt) that encodes RNA-dependent RNA polymerase (RdRp) with a molecular mass of 86.42 kDa. ParMV1 contains six conserved motifs (Ι-VΙ) that are unique to mitoviruses. In addition, the 5′and 3′ terminals of the genome have a stable secondary structure, and the reverse complementary sequence forms a panhandle structure. Comparative genome analysis revealed that ParMV1 shares 23.1–40.6% amino acid (aa) and 32.3–45.7% nucleotide (nt) sequence identities with the RdRp of other mitoviruses. The phylogenetic tree inferred from RdRp aa sequence showed that ParMV1 clusters with mitoviruses, and hence should be considered as a new member of the genus Mitovirus in the family Motiviridae. This is the first report of a novel mitovirus infecting Paris polyphylla var. yunnanensis.


2005 ◽  
Vol 79 (16) ◽  
pp. 10690-10700 ◽  
Author(s):  
Philippa J. M. Jack ◽  
David B. Boyle ◽  
Bryan T. Eaton ◽  
Lin-Fa Wang

ABSTRACT J virus (J-V) was isolated from feral mice (Mus musculus) trapped in Queensland, Australia, during the early 1970s. Although studies undertaken at the time revealed that J-V was a new paramyxovirus, it remained unclassified beyond the family level. The complete genome sequence of J-V has now been determined, revealing a genome structure unique within the family Paramyxoviridae. At 18,954 nucleotides (nt), the J-V genome is the largest paramyxovirus genome sequenced to date, containing eight genes in the order 3′-N-P/V/C-M-F-SH-TM-G-L-5′. The two genes located between the fusion (F) and attachment (G) protein genes, which have been named the small hydrophobic (SH) protein gene and the transmembrane (TM) protein gene, encode putative proteins of 69 and 258 amino acids, respectively. The 4,401-nt J-V G gene, much larger than other paramyxovirus attachment protein genes sequenced to date, encodes a putative attachment protein of 709 amino acids and distally contains a second open reading frame (ORF) of 2,115 nt, referred to as ORF-X. Taken together, these novel features represent the most significant divergence to date from the common six-gene genome structure of Paramyxovirinae. Although genome analysis has confirmed that J-V can be classified as a member of the subfamily Paramyxovirinae, it cannot be assigned to any of the five existing genera within this subfamily. Interestingly, a recently isolated paramyxovirus appears to be closely related to J-V, and preliminary phylogenetic analyses based on putative matrix protein sequences indicate that these two viruses will likely represent a new genus within the subfamily Paramyxovirinae.


Viruses ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 257
Author(s):  
E Meng ◽  
Baozhen Tang ◽  
Francisco Sanchez-Garcia ◽  
Ting Qiao ◽  
Lang Fu ◽  
...  

The complete sequence of a novel RNA virus isolated from Tetrastichus brontispae (TbRV-1) was determined to be 12,239 nucleotides in length with five non-overlapping, linearly arranged coding sequences (CDS), potentially encoding nucleoproteins, hypothetical proteins, matrix proteins, glycoproteins, and RNA-dependent RNA polymerases. Sequence analysis indicated that the RNA-dependent RNA polymerase of TbRV-1 shares a 65% nucleotide and 67% amino acid sequence identity with Hubei dimarhabdovirus 2, suggesting that TbRV-1 is a member of the dimarhabdovirus supergroup. This corresponded to the result of the phylogenetic analysis. The affiliation of TbRV-1 with members of the family Rhabdoviridae was further validated by similar transcription termination motifs (GGAACUUUUUUU) to the Drosophila sigmavirus. The prevalence of TbRV-1 in all tissues suggested that the virus was constitutive of, and not specific to, any wasp tissue. To our knowledge, this is the first report on the complete genome sequence of a dimarhabdovirus in parasitoids.


2015 ◽  
Vol 3 (5) ◽  
Author(s):  
Guangyuan Zhao ◽  
Pu Yan ◽  
Wentao Shen ◽  
Decai Tuo ◽  
Xiaoying Li ◽  
...  

The complete genome sequence (10,326 nucleotides) of a papaya ringspot virus isolate infecting genetically modified papaya in Hainan Island of China was determined through reverse transcription (RT)-PCR. The virus shares 92% nucleotide sequence identity with the isolate that is unable to infect PRSV-resistant transgenic papaya.


2016 ◽  
Vol 4 (4) ◽  
Author(s):  
Daniel R. Reuß ◽  
Andrea Thürmer ◽  
Rolf Daniel ◽  
Wim J. Quax ◽  
Jörg Stülke

Bacillus subtilis ∆6 is a genome-reduced strain that was cured from six prophages and AT-rich islands. This strain is of great interest for biotechnological applications. Here, we announce the full-genome sequence of this strain. Interestingly, the conjugative element ICE Bs 1 has most likely undergone self-excision in B. subtilis ∆6.


Author(s):  
Zilong Zhang ◽  
Danlei Liu ◽  
Zilei Zhang ◽  
Peng Tian ◽  
Shenwei Li ◽  
...  

AbstractNorovirus is recognized as one of the leading causes of acute gastroenteritis outbreaks. Genotype GII.9 was first detected in Norfolk, VA, USA, in 1997. However, the complete genome sequence of this genotype has not yet been determined. In this study, a complete genome sequence of GII.9[P7] norovirus, SCD1878_GII.9[P7], from a patient was determined using high-throughput sequencing and rapid amplification of cDNA ends (RACE) technology. The complete genome sequence of SCD1878_GII.9[P7] is 7544 nucleotides (nt) in length with a 3’ poly(A) tail and contains three open reading frames. Sequence comparisons indicated that SCD1878_GII.9[P7] shares 92.1%-92.3% nucleotide sequence identity with GII.P7 (AB258331 and AB039777) and 96.7%-97.4% identity with GII.9 (AY038599 and DQ379715). The results suggested that SCD1878_GII.9[P7] is a member of P genotype GII.P7 and G genotype GII.9. This viral sequence fills a gap at the whole-genome level for the GII.9 genotype.


2020 ◽  
Vol 165 (3) ◽  
pp. 753-756 ◽  
Author(s):  
Feng Wang ◽  
Yao Xiao ◽  
Yan Xiong ◽  
Yunjian Jiao ◽  
Qilin Zhang ◽  
...  

2018 ◽  
Vol 7 (12) ◽  
Author(s):  
María Angélica Contreras-Gutiérrez ◽  
Hilda Guzman ◽  
Jedson F. Cardoso ◽  
Vsevolod L. Popov ◽  
Marcio R. T. Nunes ◽  
...  

We report here the complete genome sequence of a novel reovirus, designated Chiqui virus (CHQV) strain CoB38d, that was isolated from a pool of unidentified mosquitoes collected in northern Colombia in 2013. CHQV has nine double-stranded DNA (dsRNA) genome segments and has similarity to viruses belonging to the family Reoviridae, subfamily Spinareovirinae.


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