Table 2.

Overview of the established host plant resistance mechanisms.

Trait	Effect on Parasitic Plants	Affected Parasitic Plants
Altered concentration/composition of strigolactones	Reduced seed germination	Root parasitic plants
Fortification of cell walls by deposition of polymeric substances Local hypersensitive response	Inhibition of tissue penetration Inhibition of tissue penetration/further development	Root and stem parasitic plants Root and stem parasitic plants
Release of specific compounds	Reduced seed germination/inhibition of haustoria formation/inhibition of further development of the parasite	Root and stem parasitic plants, specific to particular species