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00.093.0.00.006. Coconut foliar decay virus

Cite this publication as: ICTVdB Management (2006). 00.093.0.00.006. Coconut foliar decay 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: Saraoutou; Vanuatu.

Host of Isolate and Habitat Details
Source of isolate: Cocos nucifera.

Natural host and symptoms
Cocos nucifera — necrosis.

Reference to Isolation Report
Calvez et al. (1980).

Classification

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

ICTVdB Virus Code: 00.093.0.00.006. Virus accession number: 93000006. Obsolete virus code: 00.093.0.81.006.; 79.0.P.1.002; superceded accession number: 790p1002.
NCBI Taxonomy Identifier Taxon ID: 12474.

Name, Synonyms and Lineage

ICTV approved acronym: CFDV. Virus is a tentative member. Virus is not assigned to a genus; of the family 00.093. Nanoviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 20 nm. Capsids appear hexagonal in outline. The capsomer arrangement is not obvious.

Electron microscopic preparation and references: Virions not seen in sap extracts. Reference for electron microscopic methods: Randles and Hanold (1989).

Physicochemical and Physical Properties

The density of virions is 1.21-1.25 g/ml in Nycodenz; 1.30 g/ml in CS2SO4.

Nucleic Acid

The genome is segmented, circular, single-stranded DNA. The complete genome is 1290 nucleotides long, is fully sequenced. Complete sequence is 1290 nucleotides long. Sequence has the accession number [M29963] Em(40)_vi:CFDCG Gb(84)_vi:CFDCG Coconut foliar decay virus, complete genome. 7/90 1,291bp. 1 sequence.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

The viral genome encodes structural proteins.

Lipids

Lipids are not reported.

Antigenicity

Resembles subterranean clover stunt, banana bunchy top, milk vetch dwarf and faba bean necrotic yellows viruses, and also porcine circovirus, in the size of its circular single stranded DNA genome; but the latter does not hybridize with that of subterranean clover stunt virus in dot blot hybridization tests.

Diagnostics and Reference Collections

The best tests for diagnosis are isolate and characterize DNA.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Transmission and Vector Relationships

Virus is transmitted by a vector. Virus is not transmitted by mechanical inoculation; not transmitted by grafting (coconuts will not graft).

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Cixiidae: Myndus crudus. Virus is transmitted in a semi-persistent manner, or in a persistent manner.

Experimental Hosts and Symptoms

Susceptible host species are found in the Family Palmae. The following species were susceptible to experimental virus infection: Cocos nucifera.

Host:
Experimentally infected hosts mainly show symptoms of progressive yellowing and necrosis.

Diagnostic Hosts

Diagnostic host species and symptoms:

Cocos nucifera.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Cocos nucifera.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Cocos nucifera cv. Malayan Red Dwarf (W).

Histopathology: Virus can be best detected in leaves, roots and meristem.

Geographical Distribution

The virus occurs in Vanuatu.

References

Calvez, C., Renard, J.L. and Marty, G. (1980). Oleagineux 35: 443.

Randles, J.W. and Hanold, D. (1989). Intervirology 30: 177.

Rohde, W., Randles, J.W. and Langridge, P. (1990). Virology 176: 648.

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 236 by J.W. Randles, 1989.

Taxonomic Proposals and Changes

A taxonomic proposal has been submitted to the ICTV by the Plant Virus Subcommittee, Study Group for Caulimoviridae at the meeting in San Diego, March 1998 to include a new taxon (tentatively in the Genus Nanovirus). The proposal has been approved at the meeting of the Executive Committee in San Diego, 1998, the taxon has been designated as Species.



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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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