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ICTV Virus Taxonomy Profile: Pospiviroidae
Francesco Di Serio1, Robert A Owens2, Shi-Fang Li3
1Istituto per la Protezione Sostenibile delle Piante, Consiglio Nazionale delle Ricerche, Bari, 70126, Italy.
Abstract:
Members of the family Pospiviroidae have single-stranded circular RNA genomes that adopt a rod-like or a quasi-rod-like conformation. These genomes contain a central conserved region that is involved in replication in the nucleus through an asymmetric RNA-RNA rolling-circle mechanism. Members of the family Pospiviroidae lack the hammerhead ribozymes that are typical of viroids classified in the family Avsunviroidae. The family Pospiviroidae includes the genera Apscaviroid, Cocadviroid, Coleviroid, Hostuviroid and Pospiviroid, with >25 species. This is a summary of the ICTV Report on the family Pospiviroidae, which is available at ictv.global/report/pospiviroidae.
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