scholarly journals ICTV Virus Taxonomy Profile: Roniviridae

2020 ◽  
Author(s):  
Walker P. J. ◽  
Cowley J. A. ◽  
Dong X. ◽  
Huang J. ◽  
Moody N. ◽  
...  
Keyword(s):  
International Committee ◽  
Open Reading Frames ◽  
Virus Taxonomy ◽  
Highly Pathogenic ◽  
Ribosomal Frameshifting ◽  
Yellow Head Virus ◽  
The Family ◽  
Positive Sense ◽  
Membrane Spanning ◽  
Reading Frames

The family Roniviridae includes the genus Okavirus for three species of viruses with enveloped, rod-shaped virions. The monopartite, positive-sense ssRNA genome (26–27 kb) contains five canonical long open reading frames (ORFs). ORF1a encodes polyprotein pp1a containing proteinase domains. ORF1b is expressed as a large polyprotein pp1ab by ribosomal frameshifting from ORF1a and encodes replication enzymes. ORF2 encodes the nucleoprotein. ORF3 encodes two envelope glycoproteins. ORFX encodes a putative double membrane-spanning protein. Roniviruses infect shrimp but only yellow head virus is highly pathogenic. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Roniviridae, which is available at ictv.global/report/roniviridae.

scholarly journals ICTV Virus Taxonomy Profile: Redondoviridae

2020 ◽  
Author(s):  
Arwa Abbas ◽  
Louis J. Taylor ◽  
Ronald G. Collman ◽  
Frederic D. Bushman ◽  
Keyword(s):  
Critical Illness ◽  
Causative Agent ◽  
Human Subjects ◽  
International Committee ◽  
Open Reading Frames ◽  
Metagenomic Sequencing ◽  
Virus Taxonomy ◽  
Single Stranded Dna ◽  
The Family ◽  
Reading Frames

Viruses in the family Redondoviridae have a circular genome of 3.0 kb with three open reading frames. The packaged genome is inferred to be single-stranded DNA by analogy to related viruses. Redondoviruses were discovered through metagenomic sequencing methods in samples from human subjects and are inferred to replicate in humans. Evidence of redondovirus infection is associated with periodontitis and critical illness, but redondoviruses have not been shown to be the causative agent of any diseases. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Redondoviridae, which is available at ictv.global/report/redondoviridae.

scholarly journals ICTV Virus Taxonomy Profile: Solemoviridae 2021

2021 ◽  
Vol 102 (12) ◽  
Author(s):  
Merike Sõmera ◽  
Denis Fargette ◽  
Eugénie Hébrard ◽  
Cecilia Sarmiento ◽  
Keyword(s):  
Host Range ◽  
Vegetative Propagation ◽  
International Committee ◽  
Insect Vectors ◽  
Virus Taxonomy ◽  
Mechanical Wounding ◽  
Narrow Host Range ◽  
The Family ◽  
Positive Sense ◽  
Polycistronic Rna

The family Solemoviridae includes viruses with icosahedral particles (26–34 nm in diameter) assembled on T=3 symmetry with a 4–6 kb positive-sense, monopartite, polycistronic RNA genome. Transmission of members of the genera Sobemovirus and Polemovirus occurs via mechanical wounding, vegetative propagation, insect vectors or abiotically through soil; members of the genera Polerovirus and Enamovirus are transmitted by specific aphids. Most solemoviruses have a narrow host range. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Solemoviridae, which is available at ictv.global/report/solemoviridae.

scholarly journals Complete Nucleotide Sequence, Genome Organization, and Comparative Genomic Analyses of Citrus Yellow-Vein Associated Virus (CYVaV)

2021 ◽  
Vol 12 ◽  
Author(s):  
Sun-Jung Kwon ◽  
Sohrab Bodaghi ◽  
Tyler Dang ◽  
Kiran R. Gadhave ◽  
Thien Ho ◽  
...  
Keyword(s):  
Phylogenetic Analyses ◽  
Open Reading Frames ◽  
Yellow Vein ◽  
Comparative Genomic ◽  
Rna Seq ◽  
Ribosomal Frameshifting ◽  
The Family ◽  
Genomic Analyses ◽  
Vein Disease ◽  
Reading Frames

Citrus yellow-vein disease (CYVD) was first reported in California in 1957. We now report that CYVD is associated with a virus-like agent, provisionally named citrus yellow-vein associated virus (CYVaV). The CYVaV RNA genome has 2,692 nucleotides and codes for two discernable open reading frames (ORFs). ORF1 encodes a protein of 190 amino acid (aa) whereas ORF2 is presumably generated by a −1 ribosomal frameshifting event just upstream of the ORF1 termination signal. The frameshift product (717 aa) encodes the RNA-dependent RNA polymerase (RdRp). Phylogenetic analyses suggest that CYVaV is closely related to unclassified virus-like RNAs in the family Tombusviridae. Bio-indexing and RNA-seq experiments indicate that CYVaV can induce yellow vein symptoms independently of known citrus viruses or viroids.

scholarly journals ICTV Virus Taxonomy Profile: Arteriviridae 2021

2021 ◽  
Vol 102 (8) ◽  
Author(s):  
Margo A. Brinton ◽  
Anastasia A. Gulyaeva ◽  
Udeni B. R. Balasuriya ◽  
Magda Dunowska ◽  
Kay S. Faaberg ◽  
...  
Keyword(s):  
Rna Viruses ◽  
Viral Proteins ◽  
International Committee ◽  
Wild Rodents ◽  
Virus Taxonomy ◽  
Independent Manner ◽  
The Family ◽  
Positive Sense ◽  
Median Diameter ◽  
Overt Disease

The family Arteriviridae comprises enveloped RNA viruses with a linear, positive-sense genome of approximately 12.7 to 15.7 kb. The spherical, pleomorphic virions have a median diameter of 50–74 nm and include eight to eleven viral proteins. Arteriviruses infect non-human mammals in a vector-independent manner. Infections are often persistent and can either be asymptomatic or produce overt disease. Some arteriviruses are important veterinary pathogens while others infect particular species of wild rodents or African non-human primates. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Arteriviridae, which is available at ictv.global/report/arteriviridae.

scholarly journals ICTV Virus Taxonomy Profile: Marnaviridae 2021

2021 ◽  
Vol 102 (8) ◽  
Author(s):  
Andrew S. Lang ◽  
Marli Vlok ◽  
Alexander I. Culley ◽  
Curtis A. Suttle ◽  
Yoshitake Takao ◽  
...  
Keyword(s):  
International Committee ◽  
Virus Taxonomy ◽  
Enveloped Viruses ◽  
Link Type ◽  
The Family ◽  
Positive Sense ◽  
Freshwater Environments

The family Marnaviridae comprises small non-enveloped viruses with positive-sense RNA genomes of 8.6–9.6 kb. Isolates infect marine single-celled eukaryotes (protists) that come from diverse lineages. Some members are known from metagenomic studies of ocean virioplankton, with additional unclassified viruses described from metagenomic datasets derived from marine and freshwater environments. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Marnaviridae, which is available at ictv.global/report/marnaviridae.

scholarly journals ICTV Virus Taxonomy Profile: Inoviridae

2021 ◽  
Vol 102 (7) ◽  
Author(s):  
Petar Knezevic ◽  
Evelien M. Adriaenssens ◽  
Keyword(s):  
Bacterial Genome ◽  
International Committee ◽  
Gram Negative Bacteria ◽  
Virus Taxonomy ◽  
Rolling Circle ◽  
The Family ◽  
Phage Dna ◽  
Positive Sense ◽  
Filamentous Bacteriophages ◽  
Rolling Circle Mechanism

Members of the family Inoviridae are non-enveloped flexible filamentous bacteriophages (600–2500×6–10 nm) with supercoiled, circular, positive-sense, single-stranded DNA genomes of 5.5–10.6 kb, encoding 7–15 proteins. They absorb to the pili of Gram-negative bacteria and replicate their DNA by a rolling-circle mechanism with progeny released from cells by extrusion without killing the host. Phage DNA can persist extra-chromosomally or integrate into the bacterial genome. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Inoviridae, which is available at ictv.global/report/inoviridae.

Molecular characterization of a novel mycovirus isolated from Rhizoctonia solani AG-1 IA 9-11

2021 ◽  
Author(s):  
Yang Sun ◽  
Yan qiong Li ◽  
Wen han Dong ◽  
Ai li Sun ◽  
Ning wei Chen ◽  
...  
Keyword(s):  
Rhizoctonia Solani ◽  
Rna Virus ◽  
Dsrna Virus ◽  
Open Reading Frames ◽  
The Family ◽  
Significant Amino Acid Sequence ◽  
Overlapping Open Reading Frames ◽  
Significant Amino Acid ◽  
Reading Frames

Abstract The complete genome of the dsRNA virus isolated from Rhizoctonia solani AG-1 IA 9–11 (designated as Rhizoctonia solani dsRNA virus 11, RsRV11 ) were determined. The RsRV11 genome was 9,555 bp in length, contained three conserved domains, SMC, PRK and RT-like super family, and encoded two non-overlapping open reading frames (ORFs). ORF1 potentially coded for a 204.12 kDa predicted protein, which shared low but significant amino acid sequence identities with the putative protein encoded by Rhizoctonia solani RNA virus HN008 (RsRV-HN008) ORF1. ORF2 potentially coded for a 132.41 kDa protein which contained the conserved motifs of the RNA-dependent RNA polymerase (RdRp). Phylogenetic analysis indicated that RsRV11 was clustered with RsRV-HN008 in a separate clade independent of other virus families. It implies that RsRV11, along with RsRV-HN008 possibly a new fungal virus taxa closed to the family Megabirnaviridae, and RsRV11 is a new member of mycoviruses.

scholarly journals Molecular Characterization and Geographic Distribution of a Mymonavirus in the Population of Botrytis cinerea

Viruses ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 432 ◽  
Author(s):  
Fangmin Hao ◽  
Mingde Wu ◽  
Guoqing Li
Keyword(s):  
Botrytis Cinerea ◽  
Sclerotinia Sclerotiorum ◽  
Cdna Sequence ◽  
Rna Virus ◽  
Open Reading Frames ◽  
Phytopathogenic Fungus ◽  
Rna Dependent Rna Polymerase ◽  
Rdrp Domain ◽  
The Family ◽  
Reading Frames

Here, we characterized a negative single-stranded (−ss)RNA mycovirus, Botrytis cinerea mymonavirus 1 (BcMyV1), isolated from the phytopathogenic fungus Botrytis cinerea. The genome of BcMyV1 is 7863 nt in length, possessing three open reading frames (ORF1–3). The ORF1 encodes a large polypeptide containing a conserved mononegaviral RNA-dependent RNA polymerase (RdRp) domain showing homology to the protein L of mymonaviruses, whereas the possible functions of the remaining two ORFs are still unknown. The internal cDNA sequence (10-7829) of BcMyV1 was 97.9% identical to the full-length cDNA sequence of Sclerotinia sclerotiorum negative stranded RNA virus 7 (SsNSRV7), a virus-like contig obtained from Sclerotinia sclerotiorum metatranscriptomes, indicating BcMyV1 should be a strain of SsNSRV7. Phylogenetic analysis based on RdRp domains showed that BcMyV1 was clustered with the viruses in the family Mymonaviridae, suggesting it is a member of Mymonaviridae. BcMyV1 may be widely distributed in regions where B. cinerea occurs in China and even over the world, although it infected only 0.8% of tested B. cinerea strains.

scholarly journals Genome Sequence of Grapevine Virus T, a Novel Foveavirus Infecting Grapevine

2017 ◽  
Vol 5 (37) ◽  
Author(s):  
Yeonhwa Jo ◽  
Myung-Kyu Song ◽  
Hoseong Choi ◽  
Jae-Seong Park ◽  
Jae-Wung Lee ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Rna Virus ◽  
Open Reading Frames ◽  
Grapevine Virus ◽  
The Family ◽  
Putative Member ◽  
Reading Frames

ABSTRACT Here, we report the genome sequence of grapevine virus T (GVT), a novel single-stranded RNA virus identified from a transcriptome of grapevine. The genome of GVT is 8,701 nucleotides in length and encodes five open reading frames. GVT is a putative member of the genus Foveavirus in the family Betaflexiviridae.

scholarly journals First Report of a Mesonivirus and Its Derived Small RNAs in an Aphid Species Aphis citricidus (Hemiptera: Aphididae), Implying Viral Infection Activity

2020 ◽  
Vol 20 (2) ◽  
Author(s):  
Tengyu Chang ◽  
Mengmeng Guo ◽  
Wei Zhang ◽  
Jinzhi Niu ◽  
Jin-Jun Wang
Keyword(s):  
Viral Infection ◽  
Small Rnas ◽  
Rna Virus ◽  
Aphid Species ◽  
Open Reading Frames ◽  
First Report ◽  
The Family ◽  
Interfering Rna ◽  
Unassigned Genus ◽  
Reading Frames

Abstract We report a new positive-sense single-stranded RNA (ss RNA+) virus from the brown citrus aphid Aphis citricidus. The 20,300 nucleotide (nt)-long viral genome contains five open-reading frames and encodes six conserved domains (TM2, 3CLpro, TM3, RdRp, Zm, and HEL1). Phylogenetic analysis and amino acid sequence analysis revealed this virus might belong to an unassigned genus in the family Mesoniviridae. The presence of the virus was also confirmed in the field population. Importantly, analysis of the virus-derived small RNAs showed a 22-nt peak, implying that viral infection triggers the small interfering RNA pathway as antiviral immunity in aphids. This is the first report of a mesonivirus in invertebrates other than mosquitoes.

Sign in / Sign up

Export Citation Format

Share Document