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Descriptions are generated automatically from the ICTVdB database including links. Some descriptions are only very basic and links may point to documents that are not yet published on the Web.

00.039.0.02. Polerovirus

Cite this publication as: ICTVdB Management (2006). 00.039.0.02. Polerovirus. 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: 00.039.0.02. Virus accession number: 039002GE. Obsolete virus code: 39.0.2.; superceded accession number: 39020000.
NCBI Taxon Identifier NCBI Taxonomy ID: 119164.

Name, Synonyms and Lineage

Virus is of the family 00.039. Luteoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 24 nm. Capsids appear hexagonal in outline. The capsomer arrangement is not obvious.

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

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.38-1.42 g cm-3. The density of virions is 1.34 g/cm3 in Cs2SO4. There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 115 S20w. The thermal inactivation point (TIP) is at 70-80°C. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 4. The infectivity is not changed by treatment with ether; retained when deproteinized with proteases; retained when deproteinized with phenol or detergent.

Nucleic Acid

The Mr of the genome constitutes 30% of the virion by weight. The genome is segmented; bipartite, segements are distributed among 2 particle types of linear, positive-sense, single-stranded RNA. 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 complete genome is 5880-5990 nucleotides long. Genome is sequenced, but only an estimate is available, complete sequence is 5880-5990 nucleotides long.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 70% of the particle weight.

The viral genome encodes structural proteins and non-structural proteins. Virions consist of 2 structural protein(s).

Non-Structural Proteins: Virus-coded non-structural proteins have been isolated and 3 non-structural protein(s) are found.

Lipids

Lipids are absent.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is not transmitted by mechanical inoculation; transmitted by grafting; not transmitted by seeds; not transmitted by pollen.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae.

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in several families. Susceptible host species are found in the Family Amaranthaceae, Cruciferae, Portulacaceae, Solanaceae. The following species were susceptible to experimental virus infection: Amaranthus caudatus, Capsella bursa-pastoris, Celosia argentea, Datura stramonium, Gomphrena globosa, Lycopersicon esculentum, Montia perfoliata, Nicotiana clevelandii, Physalis floridana, Solanum tuberosum, Solanum tuberosum ssp. andigena, Solanum tuberosum ssp. tuberosum.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Compositae, Cruciferae, or Leguminosae-Papilionoideae. Species inoculated with virus that do not show signs of susceptibility: Brassica campestris ssp. pekinensis, Brassica oleracea var. capitata, Pisum sativum, Raphanus sativus, Senecio vulgaris, Vicia faba.

Histopathology: Virions are found in the cytoplasm and cell vacuole.

Geographical Distribution

The virus occurs in China.

Taxonomic Structure of the Genus

Type species 00.039.0.02.001. Potato leaf roll virus .

Species in the Genus

List of Species in the Genus.

References

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

PubMed References.

Taxonomic Proposals and Changes

A taxonomic proposal has been submitted to the ICTV by the Plant Virus Subcommittee, Study Group for Luteoviridae at the meeting in San Diego, March 1998, to change the position of the taxon. The proposal has been approved at the meeting of the Executive Committee in San Diego, 1998, the taxon has been designated as Genus (in the newly created family Luteoviridae).

Images

Taxon images: • courtesy of A.J. Gibbs and VIDE.



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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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