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00.017.0.01.012. Wheat yellow leaf virus

Cite this publication as: ICTVdB Management (2006). 00.017.0.01.012. Wheat yellow leaf 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: Hordeum vulgare, Triticum aestivum.

Natural host and symptoms
Avena sativa, Lolium multiflorum — leaf reddening.

Hordeum vulgare, Secale cereale, Triticum aestivum — leaf yellowing.

Reference to Isolation Report
Inouye et al. (1973).

Classification

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

ICTVdB Virus Code: 00.017.0.01.012. Virus accession number: 17001012. Obsolete virus code: 17.0.1.0.007; superceded accession number: 17010007.

Name, Synonyms and Lineage

ICTV approved acronym: WYLV. Virus is an ICTV approved species of the genus 00.017.0.01. Closterovirus in the family 00.017. Closteroviridae.

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 1600-1850 nm and a width of 10 nm. Axial canal is indistinct. Basic helix is obvious. Pitch of helix is 3.4 nm.

Electron microscopic preparation and references: Virus preparation contains few virions. Reference for electron microscopic methods: Inouye (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.

Antigenicity

The virus is serologically related to cCarnation necrotic fleck virus and Carnation yellow fleck virus, but distantly. The virus does not show serological relationships to Burdock yellow virus and Citrus tristeza virus.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

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

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Rhopalosiphum maidis, R. padi. Virus is transmitted in a semi-persistent manner; lost by the vector when it 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 Gramineae. The following species were susceptible to experimental virus infection: Avena sativa, Hordeum vulgare, Lolium multiflorum, Lolium perenne, Secale cereale, Triticum aestivum.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Gramineae. Species inoculated with virus that do not show signs of susceptibility: Oryza sativa, Zea mays.

Diagnostic Hosts

Diagnostic host species and symptoms:

Avena sativa, Lolium multiflorum — leaf reddening.

Hordeum vulgare, Secale cereale, Triticum aestivum — leaf yellowing.

Diagnostic host: insusceptible host species Oryza sativa, Zea mays.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Avena sativa, Triticum aestivum.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Avena sativa (W, Triticum aestivum (W).

References to host data: Inouye (1976).

Histopathology: Virus can be best detected in phloem. 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 membranous bodies.

Geographical Distribution

The virus occurs in Italy and Japan.

References

Amici, A and Faoro, F. (1980). Riv. Patologia Veg. S. I, 16: 9.

Inouye, T., Mitsuhata, K., Heta, H. and Hiura, U. (1973). Nogaku Kenkyu 55: 1.

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 889 by T. Inouye, 1984. 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 157.



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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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