Pospiviroidae

Pospiviroidae
Virus classification Edit this classification
(unranked): Viroid
Family: Pospiviroidae
Genera

The Pospiviroidae[1] are a incertae sedis family of ssRNA viroids with 5 genera and 39 species, including the first viroid to be discovered, PSTVd, which is part of genus Pospiviroid.[2] Their secondary structure is key to their biological activity. The classification of this family is based on differences in the conserved central region sequence.[3] Pospiviroidae replication occurs in an asymmetric fashion via host cell RNA polymerase, RNase, and RNA ligase. Its hosts are plants, specifically dicotyledons and some monocotyledons.

  1. ^ Di Serio, F; Owens, RA; Li, SF; Matoušek, J; Pallás, V; Randles, JW; Sano, T; Verhoeven, JTJ; Vidalakis, G; Flores, R; ICTV Report Consortium (17 December 2020). "ICTV Virus Taxonomy Profile: Pospiviroidae". The Journal of General Virology. 102 (2). doi:10.1099/jgv.0.001543. PMC 8116940. PMID 33331814.
  2. ^ "Virus Taxonomy: 2022 Release". International Committee on Taxonomy of Viruses (ICTV). March 2023. Retrieved 20 August 2023.
  3. ^ "ICTV Report Pospiviroidae".