In symbiotic plant-microbe interactions, the host invests considerable amounts of resources in the microbial partner. If the microbe does not reciprocate with a comparable symbiotic benefit it is regarded as a cheater. The host responds to cheaters with negative feedback mechanisms (sanctions) to pr...
ORGANISM(S): Medicago truncatula (Barrel medic) (Medicago tribuloides) Sinorhizobium meliloti 2011