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00.093.0.01.004. Milk vetch dwarf virus

Cite this publication as: ICTVdB Management (2006). 00.093.0.01.004. Milk vetch dwarf 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: Japan.

Host of Isolate and Habitat Details
Source of isolate: Astragalus sinicus.

Natural host and symptoms
Astragalus sinicus, Glycine max, Phaseolus vulgaris, Pisum sativum, Vicia faba — yellow dwarf and leaf rolling.

Reference to Isolation Report
Ohki (1975).

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: 00.093.0.01.004. Virus accession number: 93001004. Obsolete virus code: 39.0.1.T.007; superceded accession number: 3901t007.
NCBI Taxon Identifier NCBI Taxonomy ID: 67585.

Name, Synonyms and Lineage

The taxon has the accepted ICTV name.

ICTV approved acronym: MDV. Acronym(s): MVDV. Virus is an ICTV approved species of the genus 00.093.0.01. Nanovirus; family 00.093. Nanoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 26 nm. Capsids appear hexagonal in outline. The capsomer arrangement is not obvious.

Electron microscopic preparation and references: Virus preparation contains few virions. Reference for electron microscopic methods: Ohki et al. (1975).

Nucleic Acid

The genome is segmented and consists of six segments of circular, single-stranded DNA.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins.

Lipids

Lipids are absent.

Antigenicity

The virus is serologically related to Faba bean necrotic yellows virus, closely (Katul et al., 1993. The virus does not show serological relationships to This virus was previously considered to be a luteovirus, but is now known to share properties with subterranean clover stunt and related viruses. Its virions are very closely serologically related to those of faba bean necrotic yellows virus (Katul et al., 1993) but, at present, they are listed as separate species, rather than related strains.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Severity and Occurrence of Disease

Host: Signs and symptoms persist.

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is not transmitted by mechanical inoculation; transmitted by grafting.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Aphis craccivora, A gossypii, Acyrthosiphon pisum, Acyrthosiphon (Aulocorthum) solani. Virus is transmitted in a persistent manner; retained when the vector moults.

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 Chenopodiaceae, Leguminosae-Caesalpinioideae, Leguminosae-Papilionoideae, Solanaceae. The following species were susceptible to experimental virus infection: Arachis hypogaea, Astragalus sinicus, Cassia tora, Crotalaria spectabilis, Datura stramonium, Glycine max, Lathyrus odoratus, Medicago sativa, Melilotus albus, Nicotiana glutinosa, Nicotiana rustica, Nicotiana tabacum, Phaseolus vulgaris, Pisum sativum, Spinacia oleracea, Trifolium incarnatum, Trifolium subterraneum, Vicia faba, Vicia sativa, Vicia villosa, Vigna angularis, Vigna unguiculata, Vigna unguiculata ssp. sesquipedalis .

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Amaranthaceae, Chenopodiaceae, or Cucurbitaceae, Leguminosae-Papilionoideae, Solanaceae, Tetragoniaceae. Species inoculated with virus that do not show signs of susceptibility: Chenopodium amaranticolor, Cucumis sativus, Gomphrena globosa, Lycopersicon esculentum, Petunia x hybrida, Tetragonia tetragonioides, Trifolium hybridum, Trifolium pratense, Trifolium repens.

Diagnostic Hosts

Diagnostic host species and symptoms:

Spinacia oleracea, Vigna unguiculata ssp. sesquipedalis — leaf rolling, stunting.

Astragalus sinicus, Vicia sativa — yellow dwarf.

Phaseolus vulgaris — stunting.

Pisum sativum, Vicia faba — yellow dwarf, leaf roll.

Datura stramonium — interveinal yellowing, leaf rolling.

Nicotiana rustica — leaf rolling.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Pisum sativum, Vicia faba.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Astragalus sinicus (W), Pisum sativum (W), Vicia faba (W).

References to host data: Inouye et al. (1968).

Histopathology: Virus can be best detected in phloem. Virions are found in the cytoplasm and cell vacuole.

Cytopathology: Inclusions are not present in infected cells. Other cellular changes include an increase of mitochondria.

Geographical Distribution

The virus occurs in Japan.

References

Asada, Ohki, S.T., Osaki, T. and Inouye, T. (1984). Shokubutsu Boeki 38: 184.

Katul, L., van Vetten, H.J., Maiss, E., Makkouk, K.M., Lesemann, D.-E. and Casper, R. (1993) Ann. appl. Biol. 123: 629.

Inouye et al. (1968). Ann. Phytopath. Soc. Japan 34: 28.

Ohki, S.T. (1975). Ann. Phytopath. Soc. Japan 41: 508.

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 494 by T. Inouye, 1981. Revised 1984.



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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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