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00.056.0.01.010. Lily virus X

Cite this publication as: ICTVdB Management (2006). 00.056.0.01.010. Lily virus X. 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: England; the United Kingdom.

Host of Isolate and Habitat Details
Source of isolate: Lilium formosanum.

Natural host and symptoms
Lilium formosanum — symptomless. Comments on host and host range: some hosts, recorded as insusceptible by Stone (1980), have subsequently been infected using concentrated purified virion preparations.

Reference to Isolation Report
Stone (1976; 1980).

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: 00.056.0.01.010. Virus accession number: 56001010. Obsolete virus code: 56.0.1.0.010; superceded accession number: 56010010.
NCBI Taxon Identifier NCBI Taxonomy ID: 12194.

Name, Synonyms and Lineage

Synonym(s): lily virus. ICTV approved acronym: LVX. Virus is an ICTV approved species. Virus is 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 470 nm and a width of 13 nm. Axial canal is indistinct. Basic helix is obscure.

Electron microscopic preparation and references: Usually necessary to use ISEM to detect virions in sap. Reference for electron microscopic methods: Stone (1980).

Nucleic Acid

The Mr of the genome constitutes 5% of the virion by weight. The genome is monopartite, only one particle size is recovered of linear, positive-sense, single-stranded RNA. The complete genome is 7000 nucleotides long. Sequence is fully and partially sequenced, complete sequence is 7000 nucleotides long. Sequence has the accession number [X15342] Em(40)_vi:POLX3TERM Gb(84)_vi:POLX3TERM Lily virus X RNA 3' terminal region encoding 24kDa and 12KD proteins, 22kDa coat protein. 5/91 1 sequence.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 95% of the particle weight.

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

Lipids

Lipids are not reported.

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

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 dioscorea latent (SDI 9) and commelina X (SDI 10) viruses. The virus does not show serological relationships to cactus X, Cymbidium mosaic, hydrangea ringspot, narcissus mosaic, nerine X (Agapanthus strain), papaya mosaic (papaya and ullucus strains), potato aucuba mosaic, potato X and white clover mosaic viruses.

ISEM with 'decoration' rapidly distinguishes this virus from other potexviruses.

Diagnostics and Reference Collections

The best tests for diagnosis are ISEM.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms, Class Liliopsida (Monocotyledonae).

Transmission and Vector Relationships

Virus is transmitted by mechanical inoculation; not transmitted by contact between hosts.

Experimental Hosts and Symptoms

Under experimental conditions susceptibility to infection by virus is found in several families. Susceptible host species are found in the Family Amaranthaceae, Chenopodiaceae, Liliaceae, Solanaceae, Tetragoniaceae. The following species were susceptible to experimental virus infection: Chenopodium capitatum, Chenopodium murale, Chenopodium quinoa, Gomphrena globosa, Lilium formosanum, Nicotiana benthamiana, Nicotiana clevelandii, Tetragonia tetragonioides.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Chenopodiaceae, Cruciferae, Labiatae, or Leguminosae-Papilionoideae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Brassica campestris ssp. pekinensis, Chenopodium amaranticolor, Datura stramonium, Glycine max, Lycopersicon esculentum, Nicotiana debneyi, Nicotiana glutinosa, Nicotiana megalosiphon, Nicotiana tabacum, Ocimum basilicum, Petunia x hybrida, Phaseolus vulgaris, Trifolium incarnatum, Vicia faba, Vigna unguiculata.

Diagnostic Hosts

Diagnostic host species and symptoms:

Tetragonia tetragonioides — chlorotic local lesions, becoming green rings.

Chenopodium quinoa — minute chlorotic local lesions.

C. murale — chlorotic local lesions. Diagnostic host: insusceptible host species Trifolium incarnatum, Nicotiana megalosiphon, Nicotiana tabacum.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Chenopodium quinoa, Tetragonia tetragonioides.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Tetragonia tetragonioides (L), Chenopodium quinoa (L), Chenopodium murale (L).

References to host data: Stone (1980).

Histopathology: Virus can be best detected in all parts of the host plant.

Geographical Distribution

The virus occurs in the United Kingdom.

Comments

Stone (1980) estimated the length of the virions to be about 550 nm, but more recent estimates are of about 470 nm, which is shorter than that recorded for most potexviruses (usually 480-580 nm), but is longer than that recorded for dioscorea latent virus (445 nm), with which this virus shows some serological affinity.

References

Stone, O.M. (1976). Rep. Glasshouse Crops Res. Inst. 1975, p. 122.

Stone, O.M. (1980). Acta Hort. 110: 59.

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 449 by S. Phillips, 1986.



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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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