Coleus blumei viroid 7: a novel viroid resulting from genome recombination between Coleus blumei viroids 1 and 5

Autor: Janice E. Lawrence, H. Xu, Manisha Shukla, Kyle M. Gardner, Xianzhou Nie, Xiang Li, Alexa Creelman, Ryan L Smith, Mathuresh Singh
Rok vydání: 2021
Předmět:
Zdroj: Archives of Virology. 166:3157-3163
ISSN: 1432-8798
0304-8608
DOI: 10.1007/s00705-021-05201-z
Popis: The genus Coleviroid, family Pospiviroidae, comprises six known viroids, all infecting Plectranthus scutellarioides (Coleus blumei; coleus). In 2017, a novel viroid-like RNA sequence that shares ca. 65% identity with Coleus blumei viroid 1 (CbVd-1) was identified in a coleus cultivar infected by multiple coleviroids. Further sequence and secondary structure analyses are consistent with the discovery of a seventh viroid in the genus Coleviroid: tentatively named "Coleus blumei viroid 7" (CbVd-7). The viroid appears to be the product of a natural recombination event between CbVd-1 and Coleus blumei viroid 5. We prove CbVd-7 to be infectious and in turn demonstrate the ability of all known coleviroid left- and right-arm segments to recombine. With a length of 234 nucleotides, this is the smallest viroid described to date.
Databáze: OpenAIRE
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