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00.077.0.01.009. Eggplant mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.077.0.01.009. Eggplant mosaic 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: West Indies; Trinidad and Tobago.

Host of Isolate and Habitat Details
Source of isolate: Solanum melongena.

Natural host and symptoms
Solanum melongena — mosaic.

Solanum seaforthianum — mottle, veinbanding.

Lycopersicon esculentum — mosaic.

Reference to Isolation Report
Ferguson (1951, Dale (1954).

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: 00.077.0.01.009. Virus accession number: 77001009. Obsolete virus code: 77.0.1.0.007; superceded accession number: 77010007.
NCBI Taxon Identifier NCBI Taxonomy ID: 12151.

Name, Synonyms and Lineage

Synonym(s): Abelia latent virus (Waterworth et al., 1975). ICTV approved acronym: EMV. Virus is an ICTV approved species of the genus 00.077.0.01. Tymovirus; family 00.077. Tymoviridae.

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 round. The capsomer arrangement is clearly visible (capsid has 32 subunits).

Electron microscopic preparation and references: Reference for electron microscopic methods: Gibbs and Harrison (1973).

Physicochemical and Physical Properties

There are 2 sedimenting component(s) found in purified preparations. The sedimentation coefficient is of the fastest 111 S20w (B, of the other(s) are 55 S20w (T). Isoelectric point pH is 9.46. The thermal inactivation point (TIP) is at 80-90°C. The longevity in vitro (LIV) is 7 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 7.

Nucleic Acid

The Mr of the genome constitutes 36% of the virion by weight (B). The genome is monopartite. Only one particle size of linear, single-stranded RNA is recovered. The complete genome is 6330 nucleotides long. Sequence is fully and partially sequenced, complete sequence is 6330 nucleotides long. Sequence has the accession number

[J04374] Em(40)_vi:MTYRPVP Gb(84)_vi:EMVRPVP Eggplant mosaic virus genome. 5/90 6,331bp
[M10868] Em(40)_vi:TYMTY301 Gb(84)_vi:EMV3EMVA Eggplant mosaic virus RNA from the 3' terminus. 7/89 59bp.
[M15285] Em(40)_vi:TYMTY3EM Gb(84)_vi:EMV3EMV Eggplant mosaic virus 3' end which can form tRNA-like structure. 11/90 79bp
[M58314] Em(40)_vi:EMVRRLS Gb(84)_vi:EMVRRLS Eggplant mosaic virus (EMV) 3' terminus tRNA-like structure. 8/91 80bp. 4 sequences.

The 3'-terminus has a subgenomic promoter, a conserved region known as "tymobox". Reference to nucleotide sequence Bercks et al. (1971, Osorio-Keese et al. (1989).

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 64% of the particle weight (B).

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

Structural Proteins: Reference to method of preparation: Bercks et al. (1971).

Reference to amino acid sequence or composition Gibbs and Harrison (1973) and Dupin et al. (1984).

Lipids

Lipids are not reported.

Translation: The genome replicates in in association with chloroplasts (in vesicles of the membrane).

Antigenicity

The virus is serologically related to Andean potato latent virus is closely related; belladonna mottle, dulcamara mottle, ononis yellow mosaic and scrophularia mottle viruses are more distantly related (Bercks et al., 1971).

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.

General Symptoms in Plants Virus affects the photosynthetic system. Symptoms are expressed in the leaf include chlorosis and development of patterns or markings that are visible in the intercostal regions. Intercostal regions show chlorosis. Leaves with mosaic.

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

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

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Coleoptera; Epitrix sp.

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 Amaranthaceae, Chenopodiaceae, Cucurbitaceae, Leguminosae-Papilionoideae, Solanaceae. The following species were susceptible to experimental virus infection: Capsicum annuum, Chenopodium album, Chenopodium amaranticolor, Chenopodium hybridum, Chenopodium quinoa, Cucumis sativus, Datura stramonium, Gomphrena globosa, Lycopersicon esculentum, Lycopersicon pimpinellifolium, Nicandra physalodes, Nicotiana clevelandii, Nicotiana debneyi, Nicotiana glutinosa, Petunia x hybrida, Physalis floridana, Solanum melongena, Solanum seaforthianum, Solanum tuberosum, Vigna unguiculata.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Compositae, Cucurbitaceae, or Leguminosae-Papilionoideae, Solanaceae, Umbelliferae. Species inoculated with virus that do not show signs of susceptibility: Apium graveolens, Cucumis sativus, Cucurbita moschata, Nicotiana rustica, Nicotiana sylvestris, Nicotiana tabacum, Phaseolus vulgaris, Zinnia elegans.

Diagnostic Hosts

Diagnostic host species and symptoms:

Chenopodium amaranticolor, C. quinoa — chlorotic or necrotic local lesions, then systemic mottle or mosaic.

Cucumis sativus — symptomless, local infection only.

Nicotiana clevelandii — necrotic local lesions, then systemic mottling and, sometimes, necrosis, stunting.

Nicotiana glutinosa — chlorotic or necrotic local lesions, then systemic chlorotic or necrotic lesions or flecks and malformation.

Diagnostic host: insusceptible host species Phaseolus vulgaris cvs The Prince, Bountiful, Stringless Green Pod and Top Crop.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Nicotiana clevelandii, N. glutinosa.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Chenopodium amaranticolor (L), C. hybridum (L), Vigna unguiculata cv. Blackeye (L).

References to host data: Dale (1954, Debrot et al. (1977, Gibbs et al. (1966, Gibbs and Harrison (1969).

Histopathology: Virus can be best detected in all parts of the host plant. Virions are found in the cytoplasm, nucleus, chloroplast, mitochondria, and cell vacuole.

Cytopathology: Inclusions are present in infected cells. Inclusion bodies in the host cell are found in the cytoplasm. Cytoplasmic inclusions are crystals. Cytoplasmic inclusion bodies are associated with the vacuole. Inclusions are crystals in the vacuole. Inclusions contain mature virions.

Geographical Distribution

The virus occurs in Trinidad and Tobago.

Ecology, Epidemiology and Control

Studies reported by Gibbs et al. (1966, Debrot et al. (1977).

References

Dale, W.T. (1954). Ann. appl. Biol. 41: 240.

Debrot, E.A., Lastra, R. and de Uzc tegui, R.C. (1977). Pl. Dis. Reptr 61: 628.

Dupin, A, Peter, R., Collot, D., Das, B.C., Peter, C., Bouillon, P. and Duranton, H. (1984). C.R. hebd. S‚anc. Acad. Sci., Paris, Serie III No. 8: 24.

Ferguson, I.A.C. (1951). Pl. Dis. Reptr 35: 102.

Gibbs, AJ. and Harrison, BD (1969). Ann. appl. Biol. 64: 225.

Gibbs, AJ. and Harrison, BD (1973). CMI/AAB Descr. Pl. Viruses No. 124, 4 pp.

Gibbs, AJ., Hecht-Poinar, E., Woods, R.D. and McKee, R.K. (1966). J. gen. Microbiol. 44: 177.

Osorio-Keese, M., Keese, P. and Gibbs, AJ. (1989). Virology 172: 547.

Waterworth, H.E., Kaper, J.M. and Koenig, R. (1975). Phytopathology 65: 891.

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 318 by C. Büchen-Osmond, 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 124.



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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.

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Last updated on 25 April 2006 by Cornelia Büchen-Osmond
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