The significance of the discovery of cosuppression was described by NOVA scienceNOW in 2005. Jorgensen's primary focus on the problem of cosuppression in petunia has been on the epigenetic aspects of the phenomenon and the relationship between cosuppression (RNAi) and epigenetics.
In 2005, NOVA scienceNOW highlighted the significance of the discovery of cosuppression. Jorgensen's research on this phenomenon in petunia has centered around the epigenetic aspects of cosuppression and its connection to RNA interference and epigenetics.