A biocontrol technique to manage invasive exotic plants is an attractive option, especially if the parasite to the exotic host is already native to the country. In China, a native dodder is being studied for use against beggar-ticks (Bidens pilosa), a plant native to the Americas but invasive in Asia. Young Bidens plants colonized by dodder suffer due to a reduction in their ability to produce defensive compounds and may not survive. Progressively older plants were less affected and would not likely be managed by the dodder.
Annals of Botany, doi: 10.1093/aobpla/plv031, April 2015