[Home] [ICTV Taxonomy - Index of Viruses] [Virus Descriptions] [Character List] [Picture Gallery]
[Tutorial] [Online Data Retrieval & Identification] [Virus Isolate Registration & Submission] [Search]
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.

00.074.0.08. Panicovirus

Cite this publication as: ICTVdB Management (2006). 00.074.0.08. Panicovirus. 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 plant virus at the genus level.

ICTVdB Virus Code: 00.074.0.08. Virus accession number: 074008GE. Obsolete virus code: 74.0.8; superceded accession number: 74080000.
NCBI Taxon Identifier NCBI Taxonomy ID: 186844.

Name, Synonyms and Lineage

Virus is of the family 00.074. Tombusviridae.

Virion Properties

Morphology

Virions consist of a capsid. Virus capsid is not enveloped, round with icosahedral symmetry. The isometric capsid has a diameter of 30 nm. Capsids appear hexagonal in outline. The capsomer arrangement is not obvious.

Capsids can be penetrated by stain and some appear dark in the center.

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

Physicochemical and Physical Properties

Virions have a buoyant density in CsCl of 1.365 g cm-3. There are 1 sedimenting component(s) found in purified preparations. The sedimentation coefficient is 109 S20w. The thermal inactivation point (TIP) is at 80-85°C. The longevity in vitro (LIV) is 12-33 days. Although the titer is dependent on the host, the decimal exponent (DEX) of the dilution end point is usually around 6-8.

Nucleic Acid

The Mr of the genome constitutes 18% of the virion by weight. The genome is monopartite. Only one particle size of linear, positive-sense, single-stranded RNA is recovered. 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, that is mRNA. The complete genome is 4300 nucleotides long. The 5'-end of the genome has a methylated nucleotide cap; cap sequence type is m7G (7-methylguanosine) type 0. Each virion contains a single copy of the genome plus a subgenomic RNA (of 1100 nucleotides packed in low frequency).

GenBank records for nucleotide sequences; complete genome sequences.

Proteins

Proteins constitute about 82% of the particle weight.

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

Lipids

Lipids are not reported.

Genome Organization and Replication

By itself, genomic nucleic acid is infectious.

Transcription: The genome expression is based on RNA production which can be analyzed by the dsRNA patterns found in the infected tissues. Usually there are 2 virus specified dsRNA species found in infected cells. Size of largest virus specified dsRNA 4.4 kbp. 2nd largest 1.1 kbp.

Biological Properties

Natural Host

Domain
Viral hosts belong to the Domain Eucarya.

Domain Eucarya
Kingdom Plantae.

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

Taxonomic Structure of the Genus

Type species 00.074.0.08.001. Panicum mosaic virus .

Species in the Genus

List of Species in the Genus.

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 Tombusviridae at the meeting in San Diego, March 1998, to create a new taxon. The proposal has been approved by postal ballot following discussions (in the family 17,3 19,1 Tombusviridae).



Limit search to: Title & Body Title Document Path
Show Reverse Sort

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.


Additional access points to virus species lists, descriptions and images on the web:

Species catalogue                     iSpecies.org - a species search engine           a species search engine

Google Analytics      Google Analytics: activity view