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Published on: June 4, 2016
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ICTV Virus Taxonomy Profile: Ourmiavirus.
Massimo Turina1, Brad I Hillman2, Keramat Izadpanah3
1Institute for Sustainable Plant Protection-CNR, Strada delle Cacce 73, Torino 10135, Italy.
The Journal of General Virology
|March 13, 2017
Summary
Ourmiavirus, a genus of plant viruses, features unique bacilliform virions and a three-RNA genome. This summary details their taxonomy, including RNA-dependent RNA polymerase (RdRp) and movement protein (MP) similarities.
Area of Science:
- Virology
- Plant Pathology
- Molecular Biology
Background:
- Ourmiavirus is a genus of plant viruses.
- Virions are non-enveloped and bacilliform, with lengths ranging from 30 to 62 nm.
- The genome comprises three positive-sense single-stranded RNAs, each coding for a single protein.
Purpose of the Study:
- To summarize the taxonomic classification of the genus Ourmiavirus.
- To detail the characteristics of Ourmiavirus virions, genome, and key proteins.
Main Methods:
- Analysis of virion structure and size.
- Genome composition analysis (three positive-sense single-stranded RNAs).
- Comparative analysis of viral proteins, including RNA-dependent RNA polymerase (RdRp), movement protein (MP), and coat protein (CP), with related viral families and genera.
Main Results:
- Ourmiavirus virions are non-enveloped and bacilliform.
- The genome consists of three single-stranded RNAs.
- The RdRp shows similarity to Narnaviridae, the MP to Tombusviruses, and the CP to various plant and animal viruses.
Conclusions:
- The genus Ourmiavirus is taxonomically defined by its unique structural and genomic features.
- Comparative analysis reveals evolutionary relationships with other viral groups.
- This summary is based on the International Committee on Taxonomy of Viruses (ICTV) report.
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