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00.056.0.81.019. Strawberry mild yellow edge-associated virus

Cite this publication as: ICTVdB Management (2006). 00.056.0.81.019. Strawberry mild yellow edge-associated 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: California; the United States of America.

Host of Isolate and Habitat Details
Source of isolate: Fragaria vesca.

Natural host and symptoms
Fragaria vesca — chlorotic flecks in young leaves, gradual loss of vigour, chlorotic mottling, interveinal necrosis of older leaves.

Rubus rosifolius, Chenopodium quinoa — symptomless.

Reference to Isolation Report
Horne (1922).

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: 00.056.0.81.019. Virus accession number: 56081019. Obsolete virus code: 56.0.1.T.019; superceded accession number: 5601t019.
NCBI Taxon Identifier NCBI Taxonomy ID: 12187.

Name, Synonyms and Lineage

ICTV approved acronym: SMYEaV. Virus is a tentative member of the genus 00.056.0.01. Potexvirus in the family 00.056. Flexiviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped. Capsid/nucleocapsid is elongated with helical symmetry. The capsid is filamentous, flexuous with a length of 482 nm and a width of 13 nm.

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

Nucleic Acid

The genome is monopartite. Only one particle size of linear, positive-sense, single-stranded RNA is recovered. The complete genome is 5966 nucleotides long, is fully and partially sequenced, complete sequence is 5966 nucleotides long. Sequence has the accession number

[D12515] Em(40)_vi:SYVCPH Gb(84)_vi:SYVCPH Strawberry mild yellow edge-associated virus (SMYEAV), 3'terminus of the viral genome encodin
[D12517] Em(40)_vi:SYVCPE Gb(84)_vi:SYVCPE Strawberry mild yellow edge-associated virus (SMYEAV) genomic RNA encoding coat protein and 5 2 sequences.

The genome has an intergenic poly (A) region. Reference to nucleotide sequence Jelkmann et al. (1991).

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).

Structural Proteins: Reference to method of preparation: Jelkmann et al. (1990).

Reference to amino acid sequence or composition Jelkmann et al. (1991).

Non-Structural Proteins: Virus-coded non-structural proteins have been identified by sequence analysis and 5 non-structural protein(s) are found (ORFs in genome in addition to coat protein).

Lipids

Lipids are not reported.

Transcription: The virus codes for 5 ORF(s).

The genome expression is based on RNA production which can be analyzed by the dsRNA patterns found in the infected tissues. Usually there are 4 virus specified dsRNA species found in infected cells. Size of largest virus specified dsRNA 6 kbp. 2nd largest 4.2 kbp. 3rd largest 1.7 kbp. 4th largest 0.5 kbp.

Coding Strategy of Segment 1: Sequence has a gene block. Sequence has triple gene block sequence (TGB). Encodes proteins involved in cell to cell movement.

Antigenicity

The virus is serologically related to chicory X, cassava Colombian common mosaic, papaya mosaic, Sieg river viruses and, but distantly, wineberry latent virus. The virus does not show serological relationships to plantago Argentinian, cactus X, cassava common mosaic (WF), clover yellow mosaic, Cymbidium mosaic, daphne X, hydrangea ringspot, lily X, lychnis potex, narcissus mosaic, pepino mosaic, plantago X, potato aucuba mosaic, potato X, Tamus potex, tulip X, viola mottle and white clover mosaic viruses.

The sequence of the coat protein of SMYEAV, like that of other potexviruses, has significant homologies with the protein sequences of carlaviruses.

Diagnostics and Reference Collections

The best tests for diagnosis are ISEM useful, antisera prepared from coat protein expressed as a fusion protein in E. coli.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is transmitted by mechanical inoculation; transmitted by grafting.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Chaetosiphon fragaraefolii. Virus is transmitted in a non-persistent manner; possibly requires, for vector transmission, a helper virus (strawberry mild yellow edge virus).

Experimental Hosts and Symptoms

Susceptible host species are found in the Family Chenopodiaceae, Rosaceae. The following species were susceptible to experimental virus infection: Chenopodium murale, Chenopodium quinoa, Fragaria vesca, Rubus rosifolius.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Fragaria vesca UC4 (W), UC5 (W), EMC (W), F. vesca var. semperfloreus 'Alpine' (W).

Histopathology: Virus can be best detected in the companion cells.

Geographical Distribution

The virus is probably distributed worldwide. The virus occurs in Australia, or Belgium, or Bulgaria, or Canada, or Chile, or China, or Czechoslovakia (former), or France, or Germany, or Ireland, or Israel, or Italy, or Japan, or Luxembourg, or New Zealand (Aotearoa), or Paraguay, or South Africa, or Switzerland, or the United Kingdom, or the United States of America.

Ecology, Epidemiology and Control

Studies reported by Converse et al. (1987).

References

Converse, RH, Martin, R.R. and Spiegel, S. (1987). In: Virus Diseases of Small Fruits; ed. RH Converse. U.S. Dep. Agric. Hdbk No. 631, p. 25.

Horne, W.T. (1922). Rep. Cal. Exp. Stn. 1921-1922, p. 122.

Jelkmann, W., Maiss, E. and Martin, R.R. (1990). Abstr. 8th Int. Congr. Virol., p. 1445.

Jelkmann, W., Maiss, E. and Martin, R.R. (1991). J. gen. Virol. submitted.

Jelkmann, W., Martin, R.R. and Maiss, E. (1989). Phytopathology 79: 1250.

Jelkmann, W., Martin, R.R., Lesemann, D.-E., Vetten, H.J. and Skelton, F. (1990). J. gen. Virol. 71: 1251.

Martin, R.R., Jelkmann, W., Spiegel, S. and Converse, RH (1989). Acta Hort. 236: 111.

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 759 by W. Jelkmann, 1991.



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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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