Tobacco ringspot virus

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Tobacco ringspot virus
Virus classification OOjs UI icon edit-ltr.svg
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Picornavirales
Family: Secoviridae
Genus: Nepovirus
Species:
Nepovirus nicotianae

Tobacco ringspot virus (TRSV) is a plant pathogenic virus in the plant virus family Secoviridae . It is the type species of the genus Nepovirus . Nepoviruses are transmitted between plants by nematodes, thrips, mites, grasshoppers, and flea beetles. [1] TRSV is also easily transmitted by sap inoculation and transmission in seeds has been reported. [2] In recent cases it has also been shown to appear in bees, but no transmission to plants from bees has been noted. [3]

Contents

TRSV was observed for the first time in tobacco fields in Virginia and described in 1927. [4] It is an isometric particle [5] with a bipartite RNA genome. The virus has a wide host range [6] that includes field grown crops, ornamentals and weeds. Its name comes from its most common symptom being chlorotic ringspots on the leaves of infected plants. [7] In some areas this virus has caused growers to stop growing affected crops. [8]

A.B. Tobacco ringspot virus.jpg C. Nepo5b.jpg

Symptoms and virus inclusions of Tobacco ringspot nepovirus in the host Zamia furfuracea, the Cardboard Cycad. [9] A. The first symptoms seen were chlorotic ringspots. With time they become necrotic. B. There are two types of inclusions found in leaf strips stained with Azure A (nucleic acid stain), [10] one is vacuolate (Vac Inc) and the other more crystalloid (Cyst Inc - darker spots). C. Vacuolate inclusions only.

See also

References

  1. ↑ Isakeit T (2008). "Tobacco Ringspot Virus of Soybean | NC State Extension Publications" (PDF). Texas AgriLife Extension Service. Retrieved 2021-06-15.
  2. ↑ Murant AF (1983). "Seed and pollen transmission of nematode-borne viruses". Seed Sci. Technol. 11 (3): 973.
  3. ↑ Li JL, Cornman RS, Evans JD, Pettis JS, Zhao Y, Murphy C, et al. (January 2014). "Systemic spread and propagation of a plant-pathogenic virus in European honeybees, Apis mellifera". mBio. 5 (1): e00898-13. doi:10.1128/mbio.00898-13. PMC   3903276 . PMID   24449751.
  4. ↑ Fromme FD, Wingard SA, Priode CN (1927). "Ringspot of Tobacco: an infectious disease of unknown cause". Phytopathology. 17 (5): 321.
  5. ↑ Antoniw J. "Show DPV Figure". Dpvweb.net. Retrieved 2012-11-16.
  6. ↑ Price WC (July 1940). "Comparative host ranges of six plant viruses". American Journal of Botany. 27 (7): 530–41. doi:10.1002/j.1537-2197.1940.tb14714.x.
  7. ↑ "Photography of infected leaves". Invasive.org. Retrieved 2012-11-16.
  8. ↑ Babadoost M (November 1999). "Report on Plant Disease 926: Mosaic Diseases of Cucurbits" (PDF). Department of Crop Sciences. University of Illinois at Urbana-Champaign.
  9. ↑ Baker CA, Adkins S (January 2007). "Tobacco ringspot virus Found in the Cardboard Cycad (Zamia furfuracea) in Florida". Plant Disease. 91 (1): 112. doi:10.1094/PD-91-0112B. PMID   30781085.
  10. ↑ Christie RG, Edwardson JR (1977). "Light and electron microscopy of plant virus inclusions.". Fla Agric. Exp. Stn Monog. Vol. 9.
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