retroviroids

Retroviroids are very similar to viroids in size and structure but differ in that there exists a DNA form, generated by RNA-dependent DNA polymerase. Currently, only one type is known.

Sources

• Daros, J. A., & Flores, R. (1995). Identification of a retroviroid-like element from plants. Proceedings of the National Academy of Sciences, 92(15), 6856–6860. https://doi.org/10.1073/pnas.92.15.6856
• Vera, A., Daròs, J.-A., Flores, R., & Hernández, C. (2000). The DNA of a Plant Retroviroid-Like Element Is Fused to Different Sites in the Genome of a Plant Pararetrovirus and Shows Multiple Forms with Sequence Deletions. Journal of Virology, 74(22), 10390–10400. https://doi.org/10.1128/jvi.74.22.10390-10400.2000
• Hegedűs, K., Dallmann, G., & Balázs, E. (2004). The DNA form of a retroviroid-like element is involved in recombination events with itself and with the plant genome. Virology, 325(2), 277–286. https://doi.org/10.1016/j.virol.2004.04.035