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00.010.0.02.008. Elm mottle virus

Cite this publication as: ICTVdB Management (2006). 00.010.0.02.008. Elm 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: Germany.

Host of Isolate and Habitat Details
Source of isolate: Ulmus minor.

Natural host and symptoms
Hydrangea macrophylla — chlorotic mosaic.

Syringa vulgaris — white mosaic.

Ulmus minor — light green blotches, diffuse mottling.

Ulmus glabra — mottling, banded or 'oak-leaf‘ pattern. Comments on host and host range: for other susceptible and insusceptible hosts see Schmelzer (1969).

Reference to Isolation Report
Schmelzer et al. (1966a).

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: 00.010.0.02.008. Virus accession number: 10002008. Obsolete virus code: 10.0.2.02.05; superceded accession number: 10020205.
NCBI Taxon Identifier NCBI Taxonomy ID: 56486.

Name, Synonyms and Lineage

Synonym(s): possibly hydrangea mosaic virus (Jones, 1985), lilac streak mosaic virus (Smolak and Novak, 1950), lilac white mosaic virus. ICTV approved acronym: EMoV. Virus is an ICTV approved species of the genus 00.010.0.02. Ilarvirus in the family 00.010. Bromoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped. Capsid is round to elongated with icosahedral symmetry. The capsid is isometric to quasi-isometric and has a diameter of 25-30 nm. Capsids appear round. The capsomer arrangement is not obvious. Virus preparations contain more than one particle component.
























Electron micrograph of Bromoviridae.

Electron microscopic preparation and references: Virus preparation contains few virions. Stain with UF. Reference for electron microscopic methods: Schmelzer (1969, Jones and Mayo (1973).

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.35 g cm-3 (Jones and Mayo, 1973). There are 3 sedimenting component(s) found in purified preparations. The sedimentation coefficient is of the fastest 101 S20w (B, of the other(s) are 88 S20w (M), or 83 S20w (T). The thermal inactivation point (TIP) is at 58-62°C. The longevity in vitro (LIV) is 6 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 3-4. The infectivity is increased by treatment with ether; retained when deproteinized with proteases.

Nucleic Acid

The genome is segmented; tripartite, segements are distribute among 3 particle types of different size; consists of five segments 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. The complete genome is 11900 nucleotides long, is sequenced, complete sequence is about 4000 nucleotides long. RNA-2 is sequenced, but only an estimate is available, complete sequence is 3600 nucleotides long. RNA-3 is sequenced, but only an estimate is given, complete sequence is 2500 nucleotides long. RNA-4 is subgenomic has been sequenced and complete sequence is 1000 nucleotides long. Subgenomic RNA-4 is an mRNA derived from RNA-3 negative strand template, has been sequenced, and complete sequence is 800 nucleotides long. The multipartite genome is divided among more than one type of particle and the segments are distributed between 3 different types of particles. The largest particles contain each one molecule of RNA-1 (sedimenting component B). The medium sized particles contain each one molecule of RNA-2 (sedimenting component M). The smallest particles contain one molecule each of RNA-3 and RNA-4 (sedimenting component T). Reference to nucleotide sequence Jones and Mayo (1973).

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) located in the capsid.

Structural Proteins: Capsid protein is involved in viral encapsidation and involved in protein movement.

Reference to method of preparation: Jones and Mayo (1973).

Lipids

Lipids are absent.

Antigenicity

The virus is serologically related to asparagus II, citrus leaf rugose, citrus variegation and hydrangea mosaic viruses. The virus does not show serological relationships to tobacco streak, prunus necrotic ringspot, apple mosaic and prune dwarf 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 HAMAMELIDAE; Order Urticales;
Family Ulmaceae. Virus found in Ulmus minor.

Severity and Occurrence of Disease

Host: Signs and symptoms persist (but restricted to a few branches).

Transmission and Vector Relationships

Virus is transmitted by mechanical inoculation; transmitted by grafting; transmitted by seeds (Jones and Mayo 1973).

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in many families. Susceptible host species are found in the Family Amaranthaceae, Apocynaceae, Campanulaceae, Caryophyllaceae, Chenopodiaceae, Compositae, Cruciferae, Cucurbitaceae, Hydrangeaceae, Labiatae, Leguminosae-Papilionoideae, Malvaceae, Oleaceae, Polemoniaceae, Scrophulariaceae, Solanaceae, Ulmaceae. The following species were susceptible to experimental virus infection: Amaranthus retroflexus, Antirrhinum majus, Atriplex hortensis, Beta vulgaris, Catharanthus roseus, Celosia argentea, Chenopodium album, Chenopodium amaranticolor, Chenopodium foetidum, Chenopodium murale, Chenopodium quinoa, Cucumis sativus, Cucurbita maxima, Cucurbita pepo, Helianthus annuus, Hydrangea macrophylla, Lathyrus odoratus, Lavatera trimestris, Lobelia erinus, Lycopersicon esculentum, Matthiola incana, Nicotiana clevelandii, Nicotiana glutinosa, Nicotiana megalosiphon, Nicotiana tabacum, Ocimum basilicum, Petunia x hybrida, Phaseolus vulgaris, Phlox drummondii, Physalis peruviana, Senecio vulgaris, Spinacia oleracea, Stellaria media, Syringa vulgaris, Ulmus glabra, Ulmus minor, Vicia faba, Vigna unguiculata, Vigna unguiculata ssp. unguiculata, Zinnia elegans.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Caryophyllaceae, Cruciferae, or Cucurbitaceae, Leguminosae-Papilionoideae, Resedaceae, or Scrophulariaceae, Tropaeolaceae. Species inoculated with virus that do not show signs of susceptibility: Arachis hypogaea, Brassica oleracea, Brassica oleracea var. capitata, Citrullus lanatus, Dianthus barbatus, Digitalis purpurea, Gypsophila perfoliata, Reseda alba, Tropaeolum majus.

Diagnostic Hosts

Diagnostic host species and symptoms:

Chenopodium quinoa — chlorotic or necrotic local lesions, then systemic mottling and malformation.

Cucumis sativus — chlorotic blotches, severe systemic mosaic.

Nicotiana megalosiphon — chlorotic or necrotic blotches systemic crinkling. Diagnostic host: insusceptible host species Arachis hypogaea, Brassica oleracea, Digitalis purpurea, Gypsophila perfoliata, Reseda alba.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Chenopodium quinoa, Nicotiana tabacum for propagation. Petunia x hybrida for maintenance.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Chenopodium quinoa (W), Phaseolus vulgaris (L), Vigna unguiculata ssp. unguiculata (L).

References to host data: Schmelzer (1969).

Histopathology: Virus can be best detected in pollen and seed.

Geographical Distribution

The virus is probably distributed worldwide. The virus is found, but with no evidence of proliferation, in Germany and Scotland; similar leaf symptoms in elm seen in other countries (Schmelzer et al., 1966).

Ecology, Epidemiology and Control

Studies reported by Schmelzer et al. (1966, Schmelzer (1969).

References

Jones, AT (1974). CMI/AAB Descr. Pl. Viruses No. 139, 4pp.

Jones, AT (1985). Rep. Scottish Crop Res. Inst. 1984, p. 190.

Jones, AT and Mayo, MA (1973). Ann. appl. Biol. 75: 347.

Schmelzer, K. (1969). Phytopath. Z. 64: 39.

Schmelzer, K. (1977). In: Pflanzliche Virologie Vol. 3. p. 276; Ed. M. Klinkowski. Berlin, Akademie-Verlag.

Schmelzer, K., Schmidt, H.E. and Schmidt, H.B. (1966a). Arch. Gartenb. 14: 303.

Schmelzer, K., Schmidt, H.E. and Schmidt, H.B. (1966b). Arch. Forstw. 15: 107.

Smolak, J. and Novak, H.B. (1950). Ochr. Rost. 23: 285.

Thomas, B.J., Barton, RJ and Tuszynski, A (1983). Ann. appl. Biol. 103: 261.

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 324 by A.T. Jones, H. Kleinhempel and K. Kontzog, 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 139.



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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.

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