Adult-plant resistance of Panax notoginseng to nematodes and interspecific facilitation with pine trees

Root-knot nematode (RKN) is a soil-borne pathogen that severely damages Panax notoginseng. It has been recently shown intercropping P. notoginseng in forests constitutes an innovative system can promote growth and suppress the spread of disease. However, there little research on interspecific interaction between pine trees Here, 2 years field experiments were designed to explore effects RKN infestation notoginseng–pine tree saponin synthesis The results showed could significantly reduce root biomass, nutrient uptake accumulation seedlings. Interestingly, 2-year-old plants grew normally (specifically, synthesis, morphology normal) under infection, while incidence disease was decreased compared with seedlings before transplantation, indicating adult-plant resistance (APR) Furthermore, increase mild architecture may play key role. Above all, APR disease, represents type facilitation quality