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00.093.0.02. Babuvirus

Cite this publication as: ICTVdB Management (2006). 00.093.0.02. Babuvirus. 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

Host of Isolate and Habitat Details Natural hosts and symptoms

Musa ssp. — chlorosis, stunting, death.

Classification

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

ICTVdB Virus Code: 00.093.0.02. Virus accession number: 93002GE. Obsolete virus code: 79.0.P.1.001; superceded accession number: 790p1001.
NCBI Taxon Identifier NCBI Taxonomy ID: 251096.

Name, Synonyms and Lineage

Synonym(s): abaca bunchy top virus. Virus is 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 18-20 nm. Capsids appear round. The capsomer arrangement is not obvious.

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

Nucleic Acid

The genome is segmented and consists of six segments of circular, single-stranded DNA, is fully sequenced. Complete sequence is 1300 nucleotides long.   Is is about 1300 nucleotides long, is sequenced, but only an estimate is given, complete sequence is 1171 nucleotides long. Reference to nucleotide sequence Dale et al. (1986).

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

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

Lipids

Lipids are not reported.

Antigenicity

In nucleic acid hybridization tests, its genome reacts distantly with that of abaca bunchy top virus. It was originally thought to be a luteovirus: infected plants sometimes contain dsRNA, but these may come from a contaminant virus.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

General Symptoms in Plants Symptoms chlorosis, 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.

Vector Transmission:
Virus is transmitted by arthropods, by insects of the order Hemiptera, family Aphididae; Pentalonia nigronervosa. Virus is transmitted in a persistent manner; probably retained when the vector moults; not transmitted congenitally to the progeny of the vector.

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 Musaceae. The following species were susceptible to experimental virus infection: Musa, Musa sapientum (cv. Cavendish).

Host:
Experimentally infected hosts mainly show symptoms of chlorosis, stunting.

Diagnostic Hosts

Diagnostic host species and symptoms:

Musa sapientum cv. Cavendish — chlorosis, stunting.

Maintenance and Propagation Hosts

Most commonly used maintenance and propagation host species are Musa ssp.

Histopathology: Virus can be best detected in phloem.

Geographical Distribution

The virus spreads in Africa and Australasia and Pacific Islands. The virus occurs in Australia, Burundi, Egypt, Gabon, the Philippines, and Taiwan.

Ecology, Epidemiology and Control

Studies reported by Magee (1940 and 1953).

Taxonomic Structure of the Genus

Type species 00.093.0.02.001. Banana bunchy top virus .

Species in the Genus

List of Species in the Genus.

References

Dale, J.L. (1987). Adv. Virus Res. 33: 301.

Magee, C.J.P. (1940). J. Aust. Inst. Agric. Sci. 6: 109.

Magee, C.J.P. (1953). J. Proc. R. Soc. N.S.W. 87: 3

Medline References.

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

PubMed References.

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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