Sowthistle yellow vein virus

Sowthistle yellow vein virus (SYVV) is a plant-pathogenic virus of the family Rhabdoviridae. It infects the sowthistle, Sonchus oleraceous.[1] As of May 2022, the formal species name is Betanucleorhabdovirus venasonchi.

Betanucleorhabdovirus venasonchi
Virus classification Edit this classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Negarnaviricota
Class: Monjiviricetes
Order: Mononegavirales
Family: Rhabdoviridae
Genus: Betanucleorhabdovirus
Species:
Betanucleorhabdovirus venasonchi

History

Research by Edward S. Sylvester and coworkers in the 1960s–80s showed SYVV was propagated in its insect vector, the black currant aphid (Hyperomyzus lactucae). The plant disease reduced in frequency after around 1990 and apparently disappeared; the virus was rediscovered in Kern County, California, in 2018.[1]

Classification

Historically assigned to the paraphyletic genus Nucleorhabdovirus, SYVV was reclassified in 2019–20 within the new genus of Betanucleorhabdovirus, together with Sonchus yellow net virus, Datura yellow vein virus and other newly categorised species.[2]

Literature on the virus uses the name sowthistle yellow vein virus (SYVV). The formal species name has changed from Sowthistle yellow vein virus to Sowthistle yellow vein nucleorhabdovirus (2015), then Sowthistle yellow vein betanucleorhabdovirus (2019–20), and then Betanucleorhabdovirus venasonchi (2021–22).[3]

Genome

SYVV was genomically characterised in 2020 from the 2018 Kern County isolate. The isolate has 13,719 nucleotides encoding N, P, MP, M, G and L genes.[1]

References
  1. Drake C. Stenger, Lindsey P. Burbank, Renyuan Wang, Alexander A. Stewart, Caleb Mathias, Michael M. Goodin (2020). Lost and found: Rediscovery and genomic characterization of sowthistle yellow vein virus after a 30+ year hiatus. Virus Research 284: doi:10.1016/j.virusres.2020.197987
  2. ICTV Rhabdoviridae Study Group (April 2019). Split the genus Nucleorhabdovirus, creating three new genera (Alphanucleorhabdovirus, Betanucleorhabdovirus and Gammanucleorhabdovirus) comprising sixteen species, including six new species, in the family Rhabdoviridae (2019.031M); downloaded from (30 May 2022)
  3. ICTV Taxonomy history: Betanucleorhabdovirus venasonchi, ICTV (accessed 30 May 2022)
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