Badnavirus: Difference between revisions
No edit summary |
No edit summary |
||
Line 13: | Line 13: | ||
==Description and Significance== | ==Description and Significance== | ||
Viruses in the ''Badnavirus'' genus are plant pararetroviruses. | |||
==Genome Structure== | ==Genome Structure== | ||
The genome is non-segmented and contains a single molecule of circular double-stranded DNA. The complete genome is 7200-7600 nucleotides long. The genome has terminally redundant sequences that have direct terminal repeats and are reiterated internally in inverted form. ( | The genome is non-segmented and contains a single molecule of circular double-stranded DNA. The complete genome is 7200-7600 nucleotides long. The genome has terminally redundant sequences that have direct terminal repeats and are reiterated internally in inverted form. The genome is a relaxed circular molecule due to a site-specific discontinuity in each strand of DNA. (sources: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.015.0.05.htm ICTVdB], Briddon et al.) | ||
==Virion Structure of a Badnavirus== | ==Virion Structure of a Badnavirus== | ||
Line 32: | Line 32: | ||
==References== | ==References== | ||
Briddon et al. "Analysis of the Sequence of Dioscorea Alata Bacilliform Virus; Comparison to other Members of the Badnavirus Group." ''Virus Genes'' 18.3 (1999): 277-283. | |||
[http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.015.0.05.htm ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/] | [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/00.015.0.05.htm ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/] |
Revision as of 20:36, 6 July 2006
Baltimore Classification
Higher order taxa
Viruses; Retro-transcribing viruses; Caulimoviridae; Badnavirus
Species
Banana streak virus, Sugarcane bacilliform virus, Commelina yellow mottle virus, Cacao swollen shoot virus (examples)
Description and Significance
Viruses in the Badnavirus genus are plant pararetroviruses.
Genome Structure
The genome is non-segmented and contains a single molecule of circular double-stranded DNA. The complete genome is 7200-7600 nucleotides long. The genome has terminally redundant sequences that have direct terminal repeats and are reiterated internally in inverted form. The genome is a relaxed circular molecule due to a site-specific discontinuity in each strand of DNA. (sources: ICTVdB, Briddon et al.)
The virions of a badnavirus consist of a non-enveloped, elongated, icosahedral capsid. The capsid is bacilliform and the capsid shells of the virions are composed of multiple layers. Virions are either 95-130 nm or 60-900 nm in length, and 24-30-35 nm in diameter. (source: ICTVdB)
Viral Ecology & Pathology
References
Briddon et al. "Analysis of the Sequence of Dioscorea Alata Bacilliform Virus; Comparison to other Members of the Badnavirus Group." Virus Genes 18.3 (1999): 277-283.
ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/