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00.093.0.01.003. Faba bean necrotic yellows virus

Cite this publication as: ICTVdB Management (2006). 00.093.0.01.003. Faba bean necrotic yellows 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: Lattakia; Syria.

Host of Isolate and Habitat Details
Source of isolate: Vicia faba.

Natural host and symptoms
Cicer arietinum, Lens culinaris — yellowing and stunting.

Phaseolus vulgaris — stunting, yellowing and rosetting.

Vicia faba — stunting, yellowing and leaf necrosis.

Reference to Isolation Report
Makkouk et al. (1991).

Classification

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

ICTVdB Virus Code: 00.093.0.01.003. Virus accession number: 93001003. Obsolete virus code: 79.0.P.1.DE.1; superceded accession number: 790p1de1.
NCBI Taxon Identifier NCBI Taxonomy ID: 59817.

Name, Synonyms and Lineage

Virus is an ICTV approved species of the genus 00.093.0.01. Nanovirus; 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 18 nm. Capsids appear hexagonal in outline. The capsomer arrangement is not obvious.

Electron microscopic preparation and references: Virus preparation contains few virions. ISEM. Reference for electron microscopic methods: Katul et al., 1993.

Physicochemical and Physical Properties

There are 1 sedimenting component(s) found in purified preparations. A260/A280 ratio is 1.4.

Nucleic Acid

The genome is segmented and consists of seven segments of circular, single-stranded DNA, is sequenced, but only an estimate is available, complete sequence is each 970-1250 nucleotides long. The genome has an intergenic poly (A) region at in the gene that probably encodes the replicase. Reference to nucleotide sequence Katul et al., 1993; Katul et al., 1995.

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

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

Structural Proteins: Reference to method of preparation: Katul et al., 1993.

Lipids

Lipids are not reported.

Diagnostics and Reference Collections

The best tests for diagnosis are Distinguished most quickly from bean leafroll virus by the TBIA test.

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.

General Symptoms in Plants Symptoms yellowing and stunting.

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; not transmitted by pollen.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Acyrthosiphon pisum, Aphis craccivora, Aphis fabae. Virus is not transmitted by Myzus persicae. Virus is transmitted in a persistent manner; retained when the vector 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 Leguminosae-Papilionoideae. The following species were susceptible to experimental virus infection: Cicer arietinum, Lathyrus odoratus, Lens culinaris, Medicago hispida, Melilotus officinalis, Phaseolus vulgaris, Pisum sativum, Trifolium incarnatum, Trifolium subterraneum, Vicia faba, Vicia palaestina, Vicia sativa.

Host:
Experimentally infected hosts mainly show symptoms of stunting and yellowing, few pods, rolling of youngest leaves.

Experimentally infected insusceptible Hosts: Families containing insusceptible hosts: Chenopodiaceae, Cruciferae, Cucurbitaceae, Labiatae, Leguminosae-Papilionoideae, Scrophulariaceae, Solanaceae. Species inoculated with virus that do not show signs of susceptibility: Antirrhinum majus, Beta vulgaris, Brassica campestris ssp. napus, Capsella bursa-pastoris, Crambe abyssinica, Cucumis sativus, Cucurbita pepo, Glycine max, Lycopersicon esculentum, Medicago sativa, Melilotus albus, Ocimum basilicum, Spinacia oleracea, Trifolium hybridum, Trifolium pratense, Vicia villosa, Vigna unguiculata.

Diagnostic Hosts

Diagnostic host species and symptoms:

Cicer arietinum, Lens culinaris, Phaseolus vulgaris, Pisum sativum, Vicia faba, V. sativa, V. palaestina — leaf yellowing and plant stunting.

Medicago hispida, Trifolium incarnatum — leaf yellowing and reddening, plant stunting. Diagnostic host: insusceptible host species Beta vulgaris, Brassica campestris ssp. napus, Capsella bursa-pastoris, Cucumis sativus, Glycine max, Spinacia oleracea.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Lens culinaris, Pisum sativum, Vicia faba.

Assay Hosts

Host: Assay hosts (for Local lesions or Whole plants):
Pisum sativum (W), Vicia sativa (W).

References to host data: Katul et al., 1993.

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

Geographical Distribution

The virus occurs in Egypt, Ethiopia, Jordan, Lebanon, Morocco, Syria, and Turkey. The virus is found, but with no evidence of proliferation, in Morocco.

References

Franz, A, Makkouk, K.M. and Vetten, H.J. (1995). J. Phytopath. in press.

Katul, L., Vetten, H.J., Maiss, E., Makkouk, K.M., Lesemann, D.E. and Caspar, R. (1993). Ann. appl. Biol. 123: 629.

Katul, L., Maiss, E. and Vetten, H.J. (1995). J. gen. Virol. 76: 475.

Makkouk, K.M., Kumari, S.G., Katul, L. and Caspar, R. (1991). Abstr. 4th Arab Cong. Pl. Prot., Cairo, Egypt. 1991, p.204.

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 333 by K.M. Makkouk, 1994.

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 (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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