Emaravirus

Emaravirus
Virus classification
Group: Group V ((−)ssRNA)
Order: Bunyavirales
Family: Fimoviridae
Genus: Emaravirus
Type species
European mountain ash ringspot-associated virus

Emaravirus is a genus of plant viruses. The genus has more than six species, including: European mountain ash ringspot-associated virus (type species), Fig mosaic virus,[1] Pigeonpea sterility mosaic virus, Raspberry leaf blotch virus, Rose rosette virus and Maize red stripe virus. European mountain ash ringspot-associated virus is associated with a leaf mottling and ringspot disease of European mountain ash Sorbus aucuparia. It can be transmitted by grafting and possibly mites.[2]

Virology

The virion particle is between 80-100 nm and consists of an enveloped ribonucleocapsid that exhibits helical symmetry. The genomes are segmented, consisting of four strands of negative-sense single-stranded RNA.

Taxonomy

Emaravirus has the closest phylogenetic relationship with members of the genera Tospovirus and Orthobunyavirus. The 3' and 5' ends of the genomic RNAs are complementary (similar to viruses of the Bunyaviridae family), 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.

References

  1. ↑ Elbeaino, T; Digiaro, M; Martelli, GP (2009). "Complete nucleotide sequence of four RNA segments of fig mosaic virus". Archives of Virology. 154 (11): 1719–27. doi:10.1007/s00705-009-0509-3. PMID 19777155.
  2. ↑ Mielke-Ehret, N; Mühlbach, HP (Sep 2012). "Emaravirus: a novel genus of multipartite, negative strand RNA plant viruses". Viruses. 4 (9): 1515–36. doi:10.3390/v4091515. PMC 3499817. PMID 23170170.


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