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00.057.0.81.031. Dioscorea trifida virus

Cite this publication as: ICTVdB Management (2006). 00.057.0.81.031. Dioscorea trifida 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: Guadeloupe.

Host of Isolate and Habitat Details
Source of isolate: Dioscorea trifida.

Natural host and symptoms
Dioscorea trifida — mosaic, chlorotic flecking, vein-banding and leaf deformation.

Reference to Isolation Report
Migliori and Cadilhac (1976).

Classification

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

ICTVdB Virus Code: 00.057.0.81.031. Virus accession number: 57081031. Obsolete virus code: 57.0.1.T.031; superceded accession number: 5701t031.

Name, Synonyms and Lineage

ICTV approved acronym: DTV. Virus is a tentative member of the genus 00.057.0.01. Potyvirus; 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 760 nm.

Electron microscopic preparation and references: Reference for electron microscopic methods: Migliori and Cadilhac (1976).

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.

Diagnostics and Reference Collections

The best tests for diagnosis are cucumber mosaic virus often occurs with the virus (Migliori and Cadilhac, 1976).

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is transmitted by mechanical inoculation.

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

Experimental Hosts and Symptoms

Susceptible host species are found in the Family Dioscoreaceae. The following species were susceptible to experimental virus infection: Dioscorea alata, Dioscorea cayenensis, Dioscorea trifida.

Diagnostic Hosts

Diagnostic host species and symptoms:

Dioscorea alata, D. cayenensis — mosaic, chlorotic flecking, vein-banding and leaf deformation.

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

Cytopathology: Inclusions are present in infected cells. Inclusion bodies in the host cell are found in the cytoplasm. Cytoplasmic inclusions are pinwheels. Inclusions are and laminated aggregates. Inclusions do not contain mature virions.

Geographical Distribution

The virus occurs in Guadeloupe.

References

Marchoux, G., Edwige, S. and Migliori, A (1979). Ann. Phytopath. 11: 535.

Migliori, A and Cadilhac, B. (1976). Ann. Phytopath. 8: 73.

The following generic references are cited in the most recent ICTV Report.

VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 309 by A. Porth and F. Nienhaus, 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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