Multiple infections influence the resistance of potato cultivars to late blight and potato cyst nematodes

Each season, crops face simultaneous or successive multiple infections. Yet cultivar resistance is often bred against one pest at a time, and screened under single This raises the question of expression mono-infections when exposed to We tackled this by measuring level quantitative potato cultivars either Globodera pallida Phytophthora infestans infections, using virus Y (PVY) Rhizoctonia solani as co-infector. Overall, co-infection resulted in less multiplication target pathogen compared infection, although reduction did not always reach statistical significance. A preliminary assessment defence gene plants infected with P. alone together PVY R. suggested that repressed genes previously triggered PVY, but boosted these primed solani. Together, data support view impacted co-infection, it should be infection situations best assessed exploited component Integrated Pest Management strategies.