These elements are dubbed retroviroids as the homologous DNA is generated by reverse transcriptase that is encoded by retroviruses. They are neither true viroids nor viroid-like satellite RNAs: there is no extracellular form of these elements; instead, they are spread only through pollen or egg-cells. They appear to co-occur with a pararetrovirus.
These elements are dubbed retroviroids as the homologous DNA is generated by reverse transcriptase that is encoded by retroviruses. They are neither true viroids nor viroid-like satellite RNAs: there is no extracellular form of these elements; instead they ,are spread only through pollen or egg-cells. They appear to co-occur with a pararetrovirus.