Cocksfoot mottle virus

Cocksfoot mottle virus (CfMV) is a pathogenic plant virus belonging to the genus Sobemovirus. The virus appears in southern and central England. It is transmitted by beetles Lema melanopa and Lema lichenis and is common in crops of cocksfoot and cocksfoot/legume mixtures.[1]

Cocksfoot mottle virus
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Sobelivirales
Family: Solemoviridae
Genus: Sobemovirus
Species:
Cocksfoot mottle virus
Synonyms

Cocksfoot necrotic mosaic virus

Molecular biology

CfMV's P1 protein, required for infection, has been found to interfere with RNAi pathways in plants species such as Nicotiana benthamiana and Nicotiana tabacum.[2]

The polyprotein coat of CfMV is made up of two proteins, encoded by overlapping open reading frames (2a and 2b) which are transcribed through a ribosomal frameshift mechanism.[3] This mechanism is reliant upon a small stem-loop structure and a 'slippery' repeat sequence which allows programmed ribosomal frameshifting.[4]

References
  1. "Show DPV and Refs in Frame".
  2. Cecilia Sarmiento; Eva Gomez; Merike Meier; Tony A Kavanagh & Erkki Truve (January 2007). "Cocksfoot mottle virus P1 suppresses RNA silencing in Nicotiana benthamiana and Nicotiana tabacum". Virus Research. 123 (1): 95–99. doi:10.1016/j.virusres.2006.07.013. PMID 16971015.
  3. Mäkinen K, Mäkeläinen K, Arshava N, et al. (November 2000). "Characterization of VPg and the polyprotein processing of cocksfoot mottle virus (genus Sobemovirus)" (PDF). J. Gen. Virol. 81 (Pt 11): 2783–9. doi:10.1099/0022-1317-81-11-2783. PMID 11038392. Retrieved 28 July 2020.
  4. Tamm T, Suurväli J, Lucchesi J, Olspert A, Truve E (December 2009). "Stem-loop structure of Cocksfoot mottle virus RNA is indispensable for programmed -1 ribosomal frameshifting". Virus Res. 146 (1–2): 73–80. doi:10.1016/j.virusres.2009.09.002. PMC 7114514. PMID 19748532.


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