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00.010.0.02.007. Citrus variegation virus

Cite this publication as: ICTVdB Management (2006). 00.010.0.02.007. Citrus variegation 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: California; the United States of America.

Host of Isolate and Habitat Details
Source of isolate: citrus limon.

Natural host and symptoms
citrus aurantifolia, C. limon and other species — malformation and young-leaf flecking (psorosis): more severe in sour orange and lemon.

Reference to Isolation Report
Fawcett and Klotz (1939).

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: 00.010.0.02.007. Virus accession number: 10002007. Obsolete virus code: 10.0.2.02.04; superceded accession number: 10020204.
NCBI Taxon Identifier NCBI Taxonomy ID: 37127.

Name, Synonyms and Lineage

Synonym(s): citrus psorosis virus complex — infectious variegation component. ICTV approved acronym: CVV. Virus is an ICTV approved species of the genus 00.010.0.02. Ilarvirus in the family 00.010. Bromoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped. Capsid is round to elongated with icosahedral symmetry. The capsid is quasi-isometric or irregularly isometric and has a diameter of 26-35 nm. Virus preparations contain more than one particle component.
























Electron micrograph of Bromoviridae.

Nucleic Acid

The genome is segmented; tripartite, segements are distribute among 3 particle types of different size; consists of three segments of to four segments of linear, positive-sense, single-stranded RNA. Minor species of non-genomic nucleic acid are also found in virions. The encapsidated nucleic acid is mainly of genomic origin, but virions may also contain subgenomic RNA. Sequence can be accessed from EBI-EMBL and GenBank. RNA-3 is fully sequenced and encodes movement protein and coat protein genes has the accession number [U17389]. Is subgenomic. Subgenomic RNA-4 is an mRNA derived from RNA-3 negative strand template. The multipartite genome is divided among more than one type of particle and the segments are distributed between 3 different types of particles. The largest particles contain each one molecule of RNA-1 (sedimenting component B). The medium sized particles contain each one molecule of RNA-2 (sedimenting component M). The smallest particles contain one molecule each of RNA-3 and RNA-4 (sedimenting component T).

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins and non-structural proteins located in the capsid.

Structural Proteins: Capsid protein is involved in viral encapsidation and involved in protein movement.

Lipids

Lipids are absent.

Antigenicity

The virus is serologically related to citrus leaf rugose virus (but distinct).

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; Order Sapindales Family Rutaceae.

Severity and Occurrence of Disease

Host: Signs and symptoms persist and vary seasonally (with growth flushes).

Transmission and Vector Relationships

Virus is transmitted by mechanical inoculation; transmitted by grafting; possibly 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 Leguminosae-Papilionoideae, Rutaceae, Solanaceae. The following species were susceptible to experimental virus infection: Capsicum frutescens, Capsicum frutescens var. grossum, Citrus aurantifolia, Citrus aurantium, Citrus limon, Vigna unguiculata.

Diagnostic Hosts

Diagnostic host species and symptoms:

citrus aurantifolia, C. limon cv. Eureka — leaf flecking, mosaic and malformation.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are any citrus species.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Vigna unguiculata (W), Capsicum frutescens var. grossum (W).

Geographical Distribution

The virus is probably distributed worldwide (occurs in most citrus growing countries, but is not common). The virus occurs in Australia and the United States of America.

Ecology, Epidemiology and Control

Studies reported by Wallace (1978).

List of Strains and Isolates in the Species

CVV-I, CVV-II.

References

Calvert, LA, Lee, R.F. and Hiebert, E. (1987). Proc. 10th Conf. Int. Org. citrus Virol., p. 114.

Corbett, M.K. and Grant, TJ (1967). Phytopathology 57: 137.

Davino, M. and Garnsey, SM (1980). Proc. 9th Conf. Int. Org. citrus Virol., p. 196.

Desjardins, P.R. and French, J.V. (1970). Virology 40: 746.

Fawcett, H.S. and Klotz, L.J. (1939). Phytopathology 29: 911.

Garnsey, SM (1974). Proc. 6th Conf. Int. Org. citrus Virol., p. 169.

Gonsalves, D. and Garnsey, SM (1976). Proc. 7th Conf. Int. Org. citrus Virol., p. 109.

Rana, G.L., Quacquarelli, A and Martelli, GP (1974). Proc. 6th Crop Protect. Conf. Int. Org. citrus Virol., p.165.

Wallace, J.M. (1978). In: citrus Industry Vol. 4, p. 72.

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

PubMed References.

VIDEdB, the plant virus database developed at the Australian National University by Adrian J. Gibbs and collaborators, contains an earlier description with the number 223 by P. Barkley, 1987. Checked by R.F. Lee, 1989.



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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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