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00.015.0.01.012. Thistle mottle virus

Cite this publication as: ICTVdB Management (2006). 00.015.0.01.012. Thistle mottle 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: Norwich; the United Kingdom.

Host of Isolate and Habitat Details
Source of isolate: Cirsium arvense.

Natural host and symptoms
Cirsium arvense — slight mottle.

Reference to Isolation Report
Donson and Hull (1983).

Classification

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

ICTVdB Virus Code: 00.015.0.01.012. Virus accession number: 15001012. Obsolete virus code: 15.0.1.0.012; superceded accession number: 15010012.

Name, Synonyms and Lineage

ICTV approved acronym: ThMoV. Virus is an ICTV approved species of the genus 00.015.0.01. Caulimovirus in the family 00.015. Caulimoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 50 nm. The capsid shells of virions are composed of multiple layers. Capsids appear round. The capsomer arrangement is not obvious.

Electron microscopic preparation and references: Virus preparation contains few virions. Reference for electron microscopic methods: Donson and Hull (1983).

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 210 S20w.

Nucleic Acid

The genome is not segmented and contains a single molecule of circular. The genome is -RT. The genome is double-stranded DNA. Minor species of non-genomic nucleic acid are not found in virions. The complete genome is 7800 nucleotides long. Genome is sequenced, but only an estimate is available, complete sequence is 7800 nucleotides long. Reference to nucleotide sequence Donson and Hull (1983).

Proteins

The viral genome encodes structural proteins and non-structural proteins.

Non-Structural Proteins: The virus codes for an RNA-dependent DNA polymerase.

Lipids

Lipids are not reported.

Transcription: The virus codes for 7 ORF(s).

Translation: The genome replicates in presumably the nucleus and the cytoplasm (DNA to RNA in the former, RNA to DNA in the latter). Replication involves a reverse transcription step.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Class Magnoliopsida (Dicotyledonae)
Subclass ASTERIDAE.

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Experimental Hosts and Symptoms

Susceptible host species are found in the Family Compositae. The following species were susceptible to experimental virus infection: Cirsium arvense.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Cirsium arvense.

Histopathology: Virus can be best detected in mesophyll. 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 viroplasma. Inclusions contain mature virions.

Geographical Distribution

The virus is found, but with no evidence of proliferation, in the U.K.

References

Donson, J. and Hull, R. (1983). J. gen. Virol. 64: 2281.

The following generic references are cited in the most recent ICTV Report.
VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 797 by R. Hull, 1987.



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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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