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00.074.0.06.001. Oat chlorotic stunt virus

Cite this publication as: ICTVdB Management (2006). 00.074.0.06.001. Oat chlorotic stunt virus. 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

Isolate Description

Location: Wales; the United Kingdom.

Host of Isolate and Habitat Details
Source of isolate: Avena sativa.

Natural host and symptoms
Avena sativa — pale green to bright yellow leaf streaking, then necrosis and severe stunting, no viable seed produced.

Reference to Isolation Report
Catherall (1986).

Classification

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

ICTVdB Virus Code: 00.074.0.06.001. Virus accession number: 74006001. Obsolete virus code: 74.0.1.T.DE.1; superceded accession number: 7401tde1.
NCBI Taxon Identifier NCBI Taxonomy ID: 146762.

Name, Synonyms and Lineage

The taxon has the accepted ICTV name.

ICTV approved acronym: OCSV. Virus is the type of the genus 00.074.0.06. Avenavirus in the family 00.074. Tombusviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 35 nm. Capsids appear hexagonal in outline.

Electron microscopic preparation and references: Virus preparation contains many virions.

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.36 g cm-3. There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 109 S20w. The thermal inactivation point (TIP) is at 80-85°C. The longevity in vitro (LIV) is 12-33 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 6-8.

Nucleic Acid

The Mr of the genome constitutes 18% 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 also found in virions. The encapsidated nucleic acid is mainly of genomic origin, but virions may also contain subgenomic RNA, that is mRNA. The genome is fully sequenced and complete sequence is 4114 nucleotides long. The genome has a base ratio of 22-25 % guanine; 24-26 % adenine; 15-16 % cytosine; 34-37 % uracil. The 5'-end of the genome has a methylated nucleotide cap; cap sequence type is m7G (7-methylguanosine) type 0. Each virion contains a single copy of the genome plus a subgenomic RNA (of 1100 nucleotides packed in low frequency). Reference to nucleotide sequence Boonham et al. (1995).

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 82% of the particle weight.

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

Lipids

Lipids are not reported.

Genome Organization and Replication

By itself, genomic nucleic acid is infectious.

Transcription: The genome expression is based on RNA production which can be analyzed by the dsRNA patterns found in the infected tissues. Usually there are 2 virus specified dsRNA species found in infected cells.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Transmission and Vector Relationships

Virus is transmitted by mechanical inoculation.

Experimental Hosts and Symptoms

Susceptible host species are found in the Family Gramineae. The following species were susceptible to experimental virus infection: Avena sativa.

Geographical Distribution

The virus occurs in the United Kingdom.

References

Boonham, N., Henry, C.M. and Wood, K.R. (1995). J. gen. Virol. 76: 2025.

Catherall, P.L. (1980). Rep. Welsh Pl. Breeding Stn. 1985, p. 132.

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

PubMed References. A description of this taxon in VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 525 by A.A. Brunt, 1995. A description of the virus is found in DPV, a database for plant viruses developed by the Association of Applied Biologists (AAB), with the number 388.

Taxonomic Proposals and Changes

A taxonomic proposal has been submitted to the ICTV by the Plant Virus Subcommittee, Study Group for Tombusviridae at the meeting in San Diego, March 1998 to include a new taxon (in the newly created genus Avenavirus). The proposal has been approved at the meeting of the Executive Committee in San Diego, 1998, the taxon has been designated as Species.



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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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Comments to ICTVdB Management
Last updated on 25 April 2006 by Cornelia Büchen-Osmond
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