The genus Pseudovirus is currently established based upon the length of the tail of the tRNA molecule that is used as a primer to initiate reverse transcription. However, classification only based on this feature is inconsistent with phylogenetic analyses, which reveal the current members of this genus to be polyphyletic. The demarcation criteria for the genus are therefore likely to change in the future.
Carlos Llorens, Beatriz Soriano and Mart Krupovic
The citation for this ICTV Report chapter is the summary published as Llorens et al., (2021):
ICTV Virus Taxonomy Profile: Pseduoviridae, Journal of General Virology, 102 (3): 001563
A summary of this ICTV Report chapter has been published as an ICTV Virus Taxonomy Profile article in the Journal of General Virology, and should be cited when referencing this online chapter as follows:
Bergman, C. M., H. Quesneville, D. Anxolabéhère and M. Ashburner (2006). Recurrent insertion and duplication generate networks of transposable element sequences in the Drosophila melanogaster genome. Genome Biol 7: R112. [PubMed]
Boeke, J. D. and J. P. Stoye (1999). Retrotransposons, endogenous retroviruses, and the evolution of retroelements. In Retroviruses, pp. 343-435. Edited by H. Varmus, S. Hughes & J. Coffin. Cold Spring Harbor, New York: Cold Spring Harbor Laboratory.
Fauquet, C. M., M. A. Mayo, U. Desselberger and L. A. Ball (2005). Virus Taxonomy, VIIIth Report of the ICTV. London, Elsevier/Academic Press.
Gypsy Database (GyDB): focusing on ortervirales and their evolutionary history: http://gydb.org
Repbase: most commonly used database of repetitive DNA elements: https://www.girinst.org/repbase
Carlos Llorens*
Biotechvana
Street Agustin Escardino 9 Building 3, Labs 1.17-118
Scientific Park University of Valencia
46980, Paterna, Valencia Spain
E-mail : [email protected]
Most errantiviruses carry a third env-like gene and are considered to be true or potential endogenous viruses, although infectivity has been empirically demonstrated only for Drosophila melanogaster Gypsy virus (DmeGypV).
The species assigned to the genus Metavirus encode Gag and Pol proteins. However, this genus is now known to also include distinct lineages of viruses showing high divergence and polyphyletic relationships to each other.
Carlos Llorens, Beatriz Soriano and Mart Krupovic
