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Descriptions are generated automatically from the ICTVdB database including links. Some descriptions are only very basic and links may point to documents that are not yet published on the Web.

00.056.0.81.016. Rhododendron necrotic ringspot virus

Cite this publication as: ICTVdB Management (2006). 00.056.0.81.016. Rhododendron necrotic ringspot 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: Oregon; the United States of America.

Host of Isolate and Habitat Details
Source of isolate: Rhododendron sp. and Kalmia latifolia.

Natural host and symptoms
Rhododendron ssp., Kalmia latifolia — concentric necrotic rings in leaves.

Reference to Isolation Report
Coyier et al. (1976).

Classification

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

ICTVdB Virus Code: 00.056.0.81.016. Virus accession number: 56081016. Obsolete virus code: 56.0.1.T.016; superceded accession number: 5601t016.

Name, Synonyms and Lineage

ICTV approved acronym: RoNRSV. Virus is a tentative member of the genus 00.056.0.01. Potexvirus in the family 00.056. Flexiviridae.

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 504 nm and a width of 13 nm.

Electron microscopic preparation and references: Virus preparation contains few virions.

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.

Transcription: The virus codes for 5 ORF(s).

Coding Strategy of Segment 1: Sequence has a gene block. Sequence has triple gene block sequence (TGB). Encodes proteins involved in cell to cell movement.

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 not transmitted by mechanical inoculation; transmitted by grafting.

Experimental Hosts and Symptoms

Susceptible host species are found in the Family Ericaceae. The following species were susceptible to experimental virus infection: Kalmia latifolia, Rhododendron.

Histopathology: Virus can be best detected in leaves and mesophyll. Virions are found in the cytoplasm.

Cytopathology: Inclusions are present in infected cells. Inclusions aggregated contain mature virions.

Geographical Distribution

The virus occurs in Canada, the United States of America, and the United Kingdom (probably).

References

Coyier, DL, Stace-Smith, R., Allen, T.C. and Leung, E. (1976). Acta Hort. 59: 93.

Coyier, DL, Stace-Smith, R., Allen, T.C. and Leung, E. (1977). Phytopathology 67: 1090.

Pearse, AG.E. (1968). Gard. Chron. 164: 5.

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 679 by A.A. Brunt, 1991.



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