Odontoglossum ringspot virus

Odontoglossum ringspot virus (ORSV)
Virus classification
Group: Group IV ((+)ssRNA)
Genus: Tobamovirus
Species: Odontoglossum ringspot virus
Synonyms

tobacco mosaic virus—orchid strain

Odontoglossum ringspot virus (ORSV) is a plant pathogenic virus. It is one of the most common viruses affecting cultivated orchids, perhaps second only to the Cymbidium mosaic virus.[1] It causes spots on leaves and colored streaks on flowers.[1] If a plant is also infected with the Cymbidium mosaic virus, it can lead to a condition called blossom brown necrotic streak.[1] Its genome has been sequenced and contains approximately 6600 nucleotides organized into four open reading frames.[2][3] 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.[4] However, only about 60% of the nucleotides in ORSV are identical with Tobacco mosaic virus.[3] ORSV belongs to the family of Virgaviridae.

References

  1. 1 2 3 JS Hu; S Ferreira; M Wang; MQ Xu (1993), "Detection of cymbidium mosaic virus, odontoglossum ringspot virus, tomato spotted wilt virus, and Potyviruses Infecting Orchids in Hawaii" (PDF), Plant Disease, 77 (5): 464–468, doi:10.1094/PD-77-0464
  2. ↑ Chng, Cg; Wong, Sm; Mahtani, Ph; Loh, Cs; Goh, Cj; Kao, Mc; Chung, Mc; Watanabe, Y (Jun 1996), "The complete sequence of a Singapore isolate of odontoglossum ringspot virus and comparison with other tobamoviruses.", Gene, 171 (2): 155–61, doi:10.1016/0378-1119(96)00046-7, ISSN 0378-1119, PMID 8666266
  3. 1 2 Ikegami, M; Isomura, Y; Matumoto, Y; Chatani, M; Inouye, N (1995), "The complete nucleotide sequence of odontoglossum ringspot virus (Cy-1 strain) genomic RNA.", Microbiology and immunology, 39 (12): 995–1001, doi:10.1111/j.1348-0421.1995.tb03289.x, ISSN 0385-5600, PMID 8789059
  4. ↑ Fenczik, Ca; Padgett, Hs; Holt, Ca; Casper, Sj; Beachy, Rn (Sep 1995), "Mutational analysis of the movement protein of odontoglossum ringspot virus to identify a host-range determinant.", Molecular plant-microbe interactions : MPMI, 8 (5): 666–73, doi:10.1094/MPMI-8-0666, ISSN 0894-0282, PMID 7579612


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