Emaravirus

Genus of viruses

Emaravirus


Electron micrograph of European mountain ash ringspot-associated emaravirus and genome (bar = 100 nm)
Virus classification
(unranked):	Virus
Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	Negarnaviricota
Class:	Ellioviricetes
Order:	Bunyavirales
Family:	Fimoviridae
Genus:	*Emaravirus*
Species
See text

Emaravirus is a genus of negative-strand RNA viruses which infect plants. The plant virus group is the sole genus in the family Fimoviridae.^[1] The genus has 21 species.

Structure

Virions of this genus are between 80 and 100 nm and consists of an enveloped ribonucleocapsid that exhibits helical symmetry.^{[citation needed]}

Genome

The genomes are segmented, consisting of four strands of negative-sense single-stranded RNA.^{[citation needed]}

Phylogenetics

Emaravirus has the closest phylogenetic relationship with members of the genera Orthotospovirus and Orthobunyavirus. The 3' and 5' ends of the genomic RNAs are complementary (similar to viruses of the Bunyavirales order), with the sequence 5'-AGUAGUGUUCUCC-3' at the 5' terminus and 5'-GGAGUUCACUACU-3' at the 3' terminus. However, the number of genome segments and gene sequences distinguishes emaraviruses from bunyaviruses and tenuiviruses.^{[citation needed]}

Taxonomy

The following species are recognized:^[2]

Actinidia chlorotic ringspot-associated emaravirus
Actinidia emaravirus 2
Aspen mosaic-associated emaravirus
Blackberry leaf mottle associated emaravirus
Camellia japonica-associated emaravirus 1
Camellia japonica-associated emaravirus 2
European mountain ash ringspot-associated emaravirus
Fig mosaic emaravirus
High Plains wheat mosaic emaravirus
Jujube yellow mottle-associated emaravirus
Lilac chlorotic ringspot-associated emaravirus
Palo verde broom emaravirus
Pear chlorotic leaf spot-associated emaravirus
Perilla mosaic emaravirus
Pigeonpea sterility mosaic emaravirus 1
Pigeonpea sterility mosaic emaravirus 2
Pistacia emaravirus B
Raspberry leaf blotch emaravirus
Redbud yellow ringspot-associated emaravirus
Rose rosette emaravirus
Ti ringspot-associated emaravirus

References

^ Elbeaino, T; Digiaro, M; Mielke-Ehret, N; Muehlbach, HP; Martelli, GP; Ictv Report, Consortium (November 2018). "ICTV Virus Taxonomy Profile: Fimoviridae". The Journal of General Virology. 99 (11): 1478–1479. doi:10.1099/jgv.0.001143. PMID 30204080.
^ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 19 May 2021.