 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (July 2012) |
| Potato spindle tuber viroid | |
|---|---|
Virus classification 
| |
| (unranked): | Viroid |
| Family: | Pospiviroidae |
| Genus: | Pospiviroid |
| Species: | Potato spindle tuber viroid
|
The potato spindle tuber viroid (PSTVd) was the first viroid to be identified.[1][2][3][4] PSTVd is a small, single stranded circular RNA molecule[5] closely related to the chrysanthemum stunt viroid. Present within the viroidal RNA is the Pospiviroid RY motif stem loop common to its genus. The natural hosts are potatoes (Solanum tuberosum) and tomatoes (Solanum lycopersicum). All potatoes and tomatoes are susceptible to PSTVd and there is no form of natural resistance. Natural infections have also been seen in avocados and infections in other solanaceous crops have been induced in the laboratory. Until 2017 PSTVd was thought to be unable to infect Solanum sisymbriifolium.[6] Then in May seeds exported by a Dutch company were noticed to be infected.[6] These seeds were shipped from the company, but had been originally bred to their specifications in two Asian countries.[6] Pstv also causes Tomato bunchy top and is seed transmitted in tomato.[7] it contains single stranded RNA without protein coat.
- ^ Diener TO (August 1971). "Potato spindle tuber "virus". IV. A replicating, low molecular weight RNA". Virology. 45 (2): 411–28. doi:10.1016/0042-6822(71)90342-4. PMID 5095900.
- ^ "ARS Research Timeline - Tracking the Elusive Viroid". 2006-03-02. Retrieved 2007-07-18.
- ^ Discovery of Viroids Archived 2016-03-03 at the Wayback Machine
- ^ Zimmer, Carl (September 25, 2014). "A Tiny Emissary From the Ancient Past". New York Times. Retrieved September 26, 2014.
- ^ Sanger, H.L. (1982). "Biology, Structure, Functions and Possible Origin of Viroids" (PDF). Nucleic Acids and Proteins in Plants II : Structure, Biochemistry and Physiology of Nucleic Acids. Berlin, Heidelberg: Springer Berlin Heidelberg. p. 383. doi:10.1007/978-3-642-68347-3_12. ISBN 978-3-642-68349-7. Retrieved 13 March 2019.
- ^ a b c "First finding of Potato spindle tuber viroid (PSTVd) in seeds of Solanum sisymbriifolium, originating in Asia - June 2017". Netherlands Food and Consumer Product Safety Authority. 2017-06-28. Retrieved 2020-11-30.
- ^ Mink, G. I. (1993). "Pollen and Seed-Transmitted Viruses and Viroids". Annual Review of Phytopathology. 31 (1). Annual Reviews: 375–402. doi:10.1146/annurev.py.31.090193.002111. ISSN 0066-4286. PMID 18643763.