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00.000.4.00.008. Maize white line mosaic virus

Cite this publication as: ICTVdB Management (2006). 00.000.4.00.008. Maize white line 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: Vermont; the United States of America.

Host of Isolate and Habitat Details
Source of isolate: Zea mays.

Natural host and symptoms
Digitaria sanguinalis, Panicum dichotomiflorum, Setaria faberi, S. viridis — dark green mottle.

Zea mays — mottle, mosaic and characteristic chlorotic white lines, small ears with few or no kernels.

Reference to Isolation Report
Gotlieb and Liese (1980).

Classification

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

ICTVdB Virus Code: 00.000.4.00.008. Virus accession number: 00400008. Obsolete virus code: 00.079.0.04.006.; 79.0.P.4.006; superceded accession number: 79004006; 790p4006.

Name, Synonyms and Lineage

Synonym(s): maize dwarf ringspot virus, possibly maize white line virus. ICTV approved acronym: MWLMV. Virus is unclassified. Virus is not assigned to a genus; not assigned to a family.

Virion Properties

Morphology

Virions are not enveloped. The capsid is round and exhibits icosahedral symmetry. The isometric capsid has a diameter of 30-35 nm. Capsids appear round, or hexagonal in outline. The capsomer arrangement is clearly visible.

Electron microscopic preparation and references: Virus preparation contains many virions. Reference for electron microscopic methods: de Zoeten et al. (1980, Louie et al. (1982).

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.333 g cm-3 (unfixed), or 1.353 g cm-3 (when fixed in glutaraldehyde). There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 117 S20w.

Nucleic Acid

The Mr of the genome constitutes 20.9% of the virion by weight. The genome is monopartite, only one particle size is recovered; probably linear, single-stranded RNA. The complete genome is 1300-1600 nucleotides long. Genome is sequenced, but only an estimate is available, complete sequence is 1300-1600 nucleotides long. The genome has a base ratio of 30 % guanine; 19.7 % adenine; 26 % cytosine; 24.3 % uracil. Reference to nucleotide sequence de Zoeten et al. (1980).

Proteins

Proteins constitute about 79.1% of the particle weight.

The viral genome encodes structural proteins. Virions consist of 1 structural protein(s).

Structural Proteins: Reference to method of preparation: de Zoeten et al. (1980).

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

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 Gramineae. The following species were susceptible to experimental virus infection: Digitaria sanguinalis, Panicum dichotomiflorum, Setaria faberi, Setaria viridis, Zea mays.

Diagnostic Hosts

Diagnostic host species and symptoms:

Zea mays — mottle, mosaic, discrete chlorotic white lines, stunting.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Zea mays.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Zea mays (W).

References to host data: Louie et al. (1982).

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 France, Italy, and the United States of America.

Comments

Satellite-like virions are associated with this virus.

References

Boothroyd, CW and Israel, H.W. (1980). Plant Dis. 64: 218.

de Zoeten, GA, Arny, D.C., Grau, C.R., Saad, SM and Gaard, G. (1980). Phytopathology 70: 1019.

Gingery, R.E. and Louie, R. (1984). Phytopathology 74: 808.

Gotlieb, AR. and Liese, AL. (1980). Phytopathology 70: 462.

Lapierre, H., Moreau, JC and Molin, G. (1976). Poljopr. Znan. Smotra. Agric. Conspect. Sci. 39: 187.

Louie, R., Gordon, D.T., Knoke, JK, Gingery, R.E., Bradfute, O.E. and Lipps, P.E. (1982). Plant Dis. 66: 167.

Louie, R., Gordon, D.T., Madden, L.V. and Knoke, JK (1983). Plant Dis. 67: 371. 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 477 by R.E. Gingery and R. Louie, 1985. Revised 1989 by R.E. Gingery.
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 283.



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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

ICTVdB and DELTA related References

Comments to ICTVdB Management
Last updated on 25 April 2006 by Cornelia Büchen-Osmond
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