Association of nematode survival with the bacterial pathways. (A) The tree shows the bacterial phylogeny together with previously determined survival data (Akduman et al. 2018). (B) An association study between the MPGs and mean survival data narrowed down the MPGs with a significant effect on the trait, from hundreds to 41, a subsample of which is shown here. (C) Supplementation tests with three types of coumarins showed that 7-methoxycoumarin and Xanthotoxin affect nematode survival (P < 0.05, t-test).