There is a wealth of information regarding plant viruses that are able
to replicate in animal (insects) hosts or vectors. If I remember well
this ability is important while "classify" them in "taxonomy" groups.
If they replicate in the vector they are named to be "persistent" if
they do not... well NON-PERSISTENT
I also know of one rare example with Viroids. Dr. Jorge Galindo-Alonso
-now retired- demonstrated replication of VIROIDS in the aphid
I could get some references if manyone is interested.
Juan Pablo Martinez-Soriano
Laboratorio de Patologia Molecular