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00.057.0.02. Rymovirus

Cite this publication as: ICTVdB Management (2006). 00.057.0.02. Rymovirus. In: ICTVdB - The Universal Virus Database, version 4. Büchen-Osmond, C. (Ed), Columbia University, New York, USA

Cite this site as: ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/

Table of Contents

Classification

This is a description of a plant virus at the genus level.

ICTVdB Virus Code: 00.057.0.02. Virus accession number: 057002GE. Obsolete virus code: 57.0.2.; superceded accession number: 57020000.
NCBI Taxon Identifier NCBI Taxonomy ID: 39730.

Name, Synonyms and Lineage

Synonym(s): Mite-borne potyviruses. Virus is of the family 00.057. Potyviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped. Capsid/nucleocapsid is elongated with helical symmetry. Virus preparations contain one particle component. The capsid is filamentous, flexuous with a clear modal length with a length of 693-709.8-760 nm and a width of 11-13.7-15.5 nm. Axial canal is indistinct. Basic helix is obscure. Pitch of helix is 3.4 nm.

Electron microscopic preparation and references: Virus preparation contains few virions, or many virions.

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.3-1.32 g cm-3. There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 150-161.5-166 S20w. A260/A280 ratio is 1.33-1.35-1.37. The thermal inactivation point (TIP) is at 50-52.8-60°C. The longevity in vitro (LIV) is 1-8.75-56 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 3, or 4. The infectivity is retained when deproteinized with phenol or detergent.

Nucleic Acid

The Mr of the genome constitutes 5.3% of the virion by weight. The genome is monopartite. Only one particle size of linear, positive-sense, single-stranded RNA is recovered. Minor species of non-genomic nucleic acid are not found in virions. The genome is sequenced, and complete sequence is about 8500-9000-10000 nucleotides long. The genome has a base ratio of 31 % guanine; 23 % adenine; 24 % cytosine; 22 % uracil. The 5'-end of the genome has a genome-linked protein (VPg). The 3'-terminus has a poly (A) tract.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins and non-structural proteins. Virions consist of 1 structural protein(s).

Non-Structural Proteins: Virus-coded non-structural proteins have been isolated and 1 non-structural protein(s) are found.

Lipids

Lipids are not reported.

Transcription: Sub-genomic RNA is absent from infected cells.

Translation: The genome replicates in the cytoplasm.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms, Class Liliopsida (Monocotyledonae).

Class Liliopsida (Monocotyledonae)
Subclass COMMELINIDAE; Order Poales.

Severity and Occurrence of Disease

Host: Signs and symptoms persist, or vary seasonally.

Transmission and Vector Relationships

Virus is transmitted by a vector, or not transmitted by a vector. Virus is transmitted by mechanical inoculation; not transmitted by contact between hosts; transmitted by seeds, or not transmitted by seeds; not transmitted by pollen.

Vector Transmission:
Virus is transmitted by arthropods; arthropod-borne virus is transmitted by arachnids; arthropod-borne virus is transmitted by mites; arthropod-borne virus is transmitted by family Eriophyidae; Abacarus hystrix. Virus is not transmitted congenitally to the progeny of the vector.

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in few families. Susceptible host species are found in the Family Gramineae, Palmae. The following species were susceptible to experimental virus infection: Aegilops, Agropyron, Avena, Avena sativa, Bromus, Bromus mollis, Bromus secalinus, Chrysalidocarpus lutescens, Dactylis glomerata, Digitaria, Echinochloa, Echinochloa crus-galli, Elymus canadensis, Elymus trachycaulus, Elymus virginicus, Elytrigia intermedia, Elytrigia repens, Eragrostis, Festuca pratensis, Hordeum, Hordeum jubatum, Hordeum murinum, Hordeum vulgare, Lolium, Lolium multiflorum, Lolium multiflorum x L. perenne, Lolium perenne, Lophopyrum elongatum, Oryza sativa, Panicum, Phalaris, Poa, Poa canadensis, Poa compressa, Poa palustris, Poa pratensis, Secale cereale, Setaria, Setaria viridis, Spartina alternifolia, Spartina anglica, Spartina glabra, Spartina maritima, Spartina townsendii, Stipa, Triticum, Triticum aestivum, Triticum durum, Vulpia, Zea mays.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Chenopodiaceae, Cucurbitaceae, Gramineae, Leguminosae-Papilionoideae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Agrostis alba, Agrostis palustris, Agrostis tenuis, Avena sativa, Beta vulgaris, Bromus inermis, Chenopodium amaranticolor, Chloris gayana, Cucumis sativus, Cynodon dactylon, Dactylis glomerata, Echinochloa crus-galli, Elytrigia intermedia, Elytrigia repens, Festuca elatior, Festuca rubra, Hordeum jubatum, Hordeum vulgare, Lolium multiflorum, Lolium perenne, Lophopyrum elongatum, Nicotiana clevelandii, Nicotiana glutinosa, Nicotiana tabacum, Oryza sativa, Petunia x hybrida, Phaseolus vulgaris, Phleum pratense, Saccharum officinarum, Secale cereale, Setaria italica, Sorghum bicolor, Triticum aestivum, Zea mays.

Histopathology: Virions are found in the cytoplasm.

Cytopathology: Inclusions are present in infected cells. Inclusion bodies in the host cell are found in the cytoplasm. Cytoplasmic inclusions are pinwheels. Inclusions do not contain mature virions.

Geographical Distribution

The virus spreads in Eurasia, or North America. The virus occurs in Australia, or Canada, or Finland, or France, or Jordan, or Romania, or the United Kingdom, or the United States of America, or Yugoslavia.

Taxonomic Structure of the Genus

Type species 00.057.0.02.001. Ryegrass mosaic virus .

Species in the Genus

List of Species in the Genus.

Tentative Species in the Genus

Tentative Species in the Genus.

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Barnett OW, Adam G, Brunt AA, Dijkstra J, Dougherty WG, Edwardson JR, Goldbach R, Hammond J, Hill JH, Jordan RL, Kashiwazaki S, Lommel SA, Makkouk K, Morales FJ, Ohki ST, Purcifull D, Shikata E, Shukla DD, Uyeda I.

References

The following generic references are cited in the most recent ICTV Report.

PubMed References.



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DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia. ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses by Dr Cornelia Büchen-Osmond is written in DELTA. The virus descriptions in ICTVdB are coded by, or using data from experts in the field of virology or members ICTV. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations are automatically generated and formatted for display on the Web from the descriptions in DELTA-format. The description has been generated automatically from DELTA files. DELTA - DEscription Language for TAxonomy developed by Dr Mike Dallwitz, Toni Paine and Eric Zurcher, CSIRO Entomology, Canberra, Australia.

ICTVdB - The Universal Virus Database, developed for the International Committee on Taxonomy of Viruses (ICTV) by Dr Cornelia Büchen-Osmond, is written in DELTA. The virus descriptions in ICTVdB are coded by ICTV members and experts, or by the ICTVdB Management using data provided by the experts, the literature or the latest ICTV Report. The character list is the underlying code. All virus descriptions are based on the character list and natural language translations from the encoded descriptions are automatically generated and formatted for display on the Web.

Developer of the DELTA software: M. J. Dallwitz, T. Paine and E. Zurcher

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Last updated on 25 April 2006 by Cornelia Büchen-Osmond
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