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00.067.0.01.009. Subterranean clover mottle virus

Cite this publication as: ICTVdB Management (2006). 00.067.0.01.009. Subterranean clover 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: Perth; Australia.

Host of Isolate and Habitat Details
Source of isolate: Trifolium subterraneum.

Natural host and symptoms
Trifolium subterraneum — systemic mosaic, stunting.

Reference to Isolation Report
Francki et al. (1983).

Classification

This is a description of a plant virus at the species level with data on all virus properties from morphology to genome, replication, antigenicity and biological properties.

ICTVdB Virus Code: 00.067.0.01.009. Virus accession number: 67001009. Obsolete virus code: 67.0.1.0.009; superceded accession number: 67010009.
NCBI Taxon Identifier NCBI Taxonomy ID: 12472.

Name, Synonyms and Lineage

Synonym(s): subterranean clover virus. ICTV approved acronym: SCMoV. Virus is an ICTV approved species of the genus 00.067.0.01. Sobemovirus; not assigned to a family.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 30 nm. Capsids appear hexagonal in outline. The capsomer arrangement is not obvious.

Electron microscopic preparation and references: Reference for electron microscopic methods: Francki et al. (1983).

Physicochemical and Physical Properties

There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 115 S20w.

Nucleic Acid

The Mr of the genome constitutes c. 20% 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 satellite RNA. The complete genome is 4200 nucleotides long, is partially sequenced, or sequenced, but only an estimate is available, complete sequence is 4200 nucleotides long. Sequence has the accession number

[M33000] Em(40)_vi:SUVSATA Gb(84)_vi:SUVSATA Subterranean clover mottle virus satellite RNA (virusoid) sequence. 7/90 332bp.
[M33001] Em(40)_vi:SUVSATB Gb(84)_vi:SUVSATB Subterranean clover mottle virus satellite RNA (virusoid) sequence. 7/90 388bp. 2 sequences.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about c. 80% 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.

Antigenicity

The virus is serologically related to lucerne transient streak virus, but distantly. The virus does not show serological relationships to velvet tobacco mottle, solanum nodiflorum mottle, southern bean mosaic and sowbane mosaic viruses.

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 ROSIDAE.

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

Virus is transmitted by mechanical inoculation; transmitted by seeds.

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 Leguminosae-Papilionoideae. The following species were susceptible to experimental virus infection: Pisum sativum, Trifolium subterraneum.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Chenopodiaceae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Chenopodium amaranticolor, Chenopodium quinoa, Nicotiana clevelandii.

Diagnostic Hosts

Diagnostic host species and symptoms:

Pisum sativum — necrotic local lesions; No systemic infection.

Trifolium subterraneum — systemic mosaic, stunting.

Diagnostic host: insusceptible host species Chenopodium amaranticolor, C. quinoa, Nicotiana clevelandii.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Trifolium subterraneum.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Pisum sativum (L).

References to host data: Francki et al. (1983).

Histopathology: Virus can be best detected in leaves and all parts of the host plant. Virions are found in the nucleus.

Cytopathology: Inclusions are present in infected cells. Inclusion bodies in the host cell are found in the cytoplasm. Inclusions are aggregates. Inclusions contain mature virions.

Geographical Distribution

The virus occurs in Australia.

References

Francki, RIB., Randles, J.W. and Graddon, D. (1987). CMI/AAB Descr. Pl. Viruses No. 329.

Francki, RIB., Randles, J.W., Hatta, T., Davies, C., Chu, P.WG and McLean, GD (1983). Pl. Path. 32: 47.

Graddon, D. and Randles, J.W. (1986). J. virol. Meth. 13: 63. The following generic references are cited in the most recent ICTV Report.

PubMed References.

VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 765 by R.I.B. Francki, 1983. Revised 1987.

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 387.



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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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