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00.056.0.01.009. Hydrangea ringspot virus

Cite this publication as: ICTVdB Management (2006). 00.056.0.01.009. Hydrangea 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: the United States of America.

Host of Isolate and Habitat Details
Source of isolate: Hydrangea macrophylla.

Natural host and symptoms
Hydrangea macrophylla — often symptomless, but leaves sometimes crinkled and distorted, fewer florets, plants stunted.

Reference to Isolation Report
Brierley (1954).

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: 00.056.0.01.009. Virus accession number: 56001009. Obsolete virus code: 56.0.1.0.009; superceded accession number: 56010009.
NCBI Taxon Identifier NCBI Taxonomy ID: 112228.

Name, Synonyms and Lineage

ICTV approved acronym: HRSV. Virus is an ICTV approved species 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 490 nm. Axial canal is indistinct.

Electron microscopic preparation and references: Virus preparation contains few virions. Reference for electron microscopic methods: Bercks and Brandes, (1961, Koenig, (1973).

Physicochemical and Physical Properties

The thermal inactivation point (TIP) is at 70-75°C. The longevity in vitro (LIV) is 14-21 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 5.

Nucleic Acid

The Mr of the genome constitutes 5% of the virion by weight. The genome is monopartite, only one particle size is recovered of linear, positive-sense, single-stranded RNA. The complete genome is 7000 nucleotides long, is sequenced and complete sequence is about 7000 nucleotides long.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 95% of the particle weight.

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

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.

Antigenicity

The virus is serologically related to cactus X, clover yellow mosaic, potato X and white clover mosaic viruses, distantly.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Class Magnoliopsida (Dicotyledonae)
Subclass ROSIDAE.

Transmission and Vector Relationships

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

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 Amaranthaceae, Chenopodiaceae, Hydrangeaceae, Primulaceae. The following species were susceptible to experimental virus infection: Chenopodium amaranticolor, Chenopodium quinoa, Gomphrena globosa, Hydrangea macrophylla, Primula malacoides.

Host:
Experimentally infected hosts mainly show symptoms of chlorotic and necrotic local lesions.

Diagnostic Hosts

Diagnostic host species and symptoms:

Chenopodium amaranticolor, C. quinoa, Gomphrena globosa — local chlorotic or necrotic lesions, not systemic.

Primula malacoides — systemic, but symptomless.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Primula malacoides.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Chenopodium amaranticolor (L), C. quinoa (L) and Gomphrena globosa (L).

Histopathology: Virions are found in the cytoplasm.

Cytopathology: Inclusions are present in infected cells.

Geographical Distribution

The virus is probably distributed worldwide. The virus spreads in Eurasia, North America, and Australasia and Pacific Islands. The virus occurs in Belgium, Canada, Czechoslovakia (former), Denmark, France, Germany, Ireland, Italy, New Zealand (Aotearoa), the United Kingdom, and the United States of America.

References

Bercks, R. and Brandes, J. (1961). Phytopath. Z. 42: 45.

Brandes, J. and Bercks, R. (1965). Adv. Virus Res. 11: 1.

Brierley, P. (1954). Phytopathology 44: 696.

Brierley, P. and Lorentz, P. (1957). Phytopathology 47: 39.

Hollings, M. (1958). J. Hort. Sci. 33: 257.

Koenig, R. (1970). NachrBl. dtsch. PflSchutz. Stuttg. 22: 34.

Koenig, R. (1973). CMI/AAB Descr. Pl. Viruses No. 114, 3pp.

Sisler, H.D., Chang, S.C., Reagan, R.L. and Brierley, P. (1957). Phytopathology 47: 491. The following generic references are cited in the most recent ICTV Report.

PubMed References. A description of this taxon in VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 410 by A.A. Brunt, 1994. 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 114.



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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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