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Descriptions are generated automatically from the ICTVdB database including links. Some descriptions are only very basic and links may point to documents that are not yet published on the Web.

00.049. Partitiviridae

Cite this publication as: ICTVdB Management (2006). 00.049. Partitiviridae. 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

Classification

This is a description of a fungal and plant virus at the family level.

ICTVdB Virus Code: 00.049. Virus accession number: 00049FAM. Obsolete virus code: 49.; superceded accession number: 49000000.
NCBI Taxon Identifier NCBI Taxonomy ID: 11012.

Name, Synonyms and Lineage

Synonym(s): Bipartite dsRNA Mycovirus group.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The nucleocapsid is isometric and has a diameter of 30-35 nm. The capsid consists of 12 capsomers. Virus preparations contain more than one particle component.

Incomplete particles are common. They are devoid of nucleic acid characterized by capsids with dark centers in negative stain preparations.

Nucleic Acid

The Mr of the genome constitutes 9% of the virion by weight, or 16% of the virion by weight, or 25% of the virion by weight. The genome is segmented; multipartite and segments are distributed over several particles of varying size, depending on the length of the genome enclosed. The genome consists of two segments of, or three segments of, or four segments of linear, double -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, or satellite RNA. The complete genome is 3000-10000 nucleotides long. Genome is sequenced, but only an estimate is available, complete sequence is 1300-2200 nucleotides long.   Is sequenced, complete sequence is about 1500-2200 nucleotides long, is sequenced, but only an estimate is given, complete sequence is 600-1500 nucleotides long (defective or subgenomic RNA). The multipartite genome is divided among more than one type of particle and the segments are distributed between at least 2-7 different types of particles (containing either a single molecule of dsRNA (L1, L2), or single molecule of ssRNA corresponding to the plus-strand (M1; M2) and a single molecule of dsRNA with ssRNA tails (H), or one molecule of dsRNA and ssRNA (H), or two molecules of dsRNA (P)). Populations of mature viruses contain particles with a single molecule of dsRNA (L1, L2), or a single molecule of ssRNA corresponding to the plus-strand (M1; M2) and a single molecule of dsRNA with ssRNA tails (H), or one molecule each of dsRNA and ssRNA (H), or two molecules of dsRNA (P). Each virion contains defective interfering copies.

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.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Fungi, or Plantae.

Kingdom Fungi
Phylum Ascomycota (Sac Fungi).

Kingdom Plantae
Phylum Magnoliophyta (Angiosperms).

Taxonomic Structure of the Family

00.049.0.01. Partitivirus
00.106.0.01. Chrysovirus
00.049.0.03. Alphacryptovirus
00.049.0.04. Betacryptovirus.

Data Sources and Contributions

The description has been compiled from data in the ICTV Report presented by Ghabrial SA, Bozarth RF, Buck KW, Yamashita S, Martelli GP, Milne RG.

References

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

PubMed References.

Images

Taxon images: • EM from IACR Rothamsted.



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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
Copyright © 2002    International Committee on Taxonomy of Viruses.    All rights reserved.


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