Emaravirus
Symptoms of "Fig mosaic emaravirus" on fig leaves
Electron micrograph of European mountain ash ringspot-associated emaravirus and genome (bar = 100 nm)
Virus classification Edit this 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.

Genome

The genomes are segmented, consisting of four strands of negative-sense single-stranded RNA.

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.

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

  1. ↑ 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.
  2. ↑ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 19 May 2021.


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