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00.057.0.01.078. Freesia mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.01.078. Freesia 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: Lisse; the Netherlands.

Host of Isolate and Habitat Details
Source of isolate: Freesia refracta.

Natural host and symptoms
Freesia refracta — mild chlorosis symptomless.

Reference to Isolation Report
Van Koot et al. (1954).

Classification

This is a description of a plant virus at the species level.

ICTVdB Virus Code: 00.057.0.01.078. Virus accession number: 57001078. Obsolete virus code: 57.0.1.T.038; superceded accession number: 5701t038.

Name, Synonyms and Lineage

Synonym(s): freesia streak virus. ICTV approved acronym: FreMV. Virus is an ICTV approved species. Virus is of the genus 00.057.0.01. Potyvirus in the family 00.057. Potyviridae.

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 clear modal length with a length of 825 nm and a width of 12 nm. Axial canal is indistinct.

Electron microscopic preparation and references: Virus preparation contains many virions. Reference for electron microscopic methods: Van Koot et al. (1954).

Nucleic Acid

The genome is monopartite. Only one particle size of linear, positive-sense, single-stranded RNA is recovered.

Proteins

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

Lipids

Lipids are not reported.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms).

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; not transmitted by contact between hosts; not transmitted by seeds; not transmitted by pollen.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Macrosiphum euphorbiae, Myzus persicae. Virus is transmitted in a non-persistent manner.

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 Iridaceae. The following species were susceptible to experimental virus infection: Freesia refracta.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Amaranthaceae, Caryophyllaceae, or Chenopodiaceae, Compositae, Cruciferae, Cucurbitaceae, or Leguminosae-Papilionoideae, Liliaceae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Brassica campestris ssp. pekinensis, Brassica juncea, Chenopodium amaranticolor, Chenopodium murale, Chenopodium quinoa, Cucumis sativus, Datura stramonium, Gomphrena globosa, Lilium formosanum, Nicotiana benthamiana, Nicotiana clevelandii, Nicotiana glutinosa, Nicotiana rustica, Nicotiana tabacum, Petunia x hybrida, Phaseolus vulgaris, Pisum sativum, Silene armeria, Trifolium incarnatum, Verbesina encelioides, Vicia faba, Vigna unguiculata.

Diagnostic Hosts

Diagnostic host species and symptoms:
none reported.

Diagnostic host: insusceptible host species Phaseolus vulgaris, Chenopodium quinoa, Trifolium incarnatum, Vicia faba.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Freesia refracta.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
none reported.

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

Cytopathology: Inclusions are not present in infected cells.

Geographical Distribution

The virus occurs in Australia, Ireland, the Netherlands, and the United Kingdom. The virus is found, but with no evidence of proliferation, in New Zealand.

Comments

This virus, together with freesia leaf necrosis virus is the cause of a disease originally named freesia streak (Brunt, 1974; van Dorsk, 1973).

References

Brunt, A.A. (1974). Rep. Glasshouse Crops Res. Inst. 1973, p. 117.

Foxe, M.J. and Wilson, U.E. (1985). Acta Hort. 164: 291.

Van Dorst, H.J.M. (1973). Neth. J. Pl. Path. 79: 130.

Van Koot, Y., van Slogteren, D.H.M., Cremer, M.C. and Camfferman, J. (1954). Tijdschr. Plziekt. 60: 157.

The following generic references are cited in the most recent ICTV Report.
A description of this taxon can also be found on the web at VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description; VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 347 by S. Phillips, 1985.



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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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