World Library  
Flag as Inappropriate
Email this Article

Partitiviridae

Article Id: WHEBN0010001667
Reproduction Date:

Title: Partitiviridae  
Author: World Heritage Encyclopedia
Language: English
Subject: Mycovirus, Gammaflexiviridae, Alphaflexiviridae, Asfarviridae, Middle East respiratory syndrome coronavirus
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Partitiviridae

Partitiviridae
CryoEM reconstruction of Penicillium stoloniferum virus S capsid, a partitivirus. EMDB entry [1]
Virus classification
Group: Group III (dsRNA)
Order: Unassigned
Family: Partitiviridae
Genera

Partitiviridae are plant and fungi group III viruses with double stranded RNA genomes. Their name comes from the Latin partitius which means divided and they are called this as they have segmented genomes.

Taxonomy

There are currently five recognized genera within the Partitiviridae family:

Cryspoviruses infect apicomplexian protozoa of the genus Cryptosporidium,[2] while viruses of the other genera infect plants and fungi. There are an additional fifteen species in the family unassigned to a genus.

Genome and structure

Partitiviruses have double stranded RNA genomes divided into two genomic segments and there may be additional subgenomic segments. The genome segments are packaged in the same virus particle, the larger segment codes for the RNA-dependent RNA polymerase and the smaller codes for the coat protein. The total length of the genome is 3000–10000 nucleotides in length. The virus particle is non-enveloped and icosahedral with a diameter between 30–35 nm.

Phylogenetics

Based on the RNA polymerase gene this group can be divided into four clades (I-IV).[3] Four isolates from animals and protozoans form a fifth clade. Clades I-IV consist of mixtures of partitivirus-like sequences from plants and fungi.

References

  1. ^ Tang, J.; Pan, J.; Havens, W. M.; Ochoa, W. F.; Guu, T. S. Y.; Ghabrial, S. A.; Nibert, M. L.; Tao, Y. J.; Baker, T. S. (2010). "Backbone Trace of Partitivirus Capsid Protein from Electron Cryomicroscopy and Homology Modeling". Biophysical Journal 99 (2): 685–694.  
  2. ^ Nibert ML, Woods KM, Upton SJ, Ghabrial SA (2009) Cryspovirus: a new genus of protozoan viruses in the family Partitiviridae. Arch Virol 154(12):1959-1965
  3. ^ Liu H, Fu Y, Xie J, Cheng J, Ghabrial SA, Li G, Yi X, Jiang D (2012) Discovery of Novel dsRNA Viral Sequences by In Silico Cloning and Implications for Viral Diversity, Host Range and Evolution. PLoS One. 2012;7(7):e42147.

External links

  • ICTVdB
  • : PartitiviridaeViralZone
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.