''Odontoglossum ringspot virus'' (ORSV) is a plant pathogenic virus that belongs to the family ''
Virgaviridae
''Virgaviridae'' is a family of positive-strand RNA viruses. Plants serve as natural hosts.Adams MJ, Antoniw JF, Kreuze J (2009) Virgaviridae: a new family of rod-shaped plant viruses. Arch Virol 154(12):1967–1972 The name of the family is der ...
''. It is one of the most common viruses affecting cultivated
orchids, perhaps second only to the ''
Cymbidium mosaic virus
''Cymbidium mosaic virus'' (CymMV) is a plant pathogenic virus of the family ''Alphaflexiviridae''.
''Cymbidium mosaic virus'' and the '' Odontoglossum ringspot virus'' (ORSV) are two of the most common viruses affecting cultivated orchids world ...
''.
It causes spots on leaves and colored streaks on flowers.
If a plant is also infected with the ''Cymbidium mosaic virus'', it can lead to a condition called blossom brown necrotic streak.
Phylogenetics
Its genome has been sequenced and contains approximately 6600
nucleotides organized into four
open reading frames.
Its similarity to other
tobamoviruses can be seen from the genetic data and the (limited) ability of a ''
Tobacco mosaic virus'' modified to contain ORSV
movement protein to infect tobacco.
However, only about 60% of the nucleotides in ORSV are identical with ''Tobacco mosaic virus''.
References
External links
ICTVdB – The Universal Virus Database: ''Odontoglossum ringspot virus''
{{DEFAULTSORT:Odontoglossum Ringspot Virus
Viral plant pathogens and diseases
Tobamovirus
Orchid diseases