Which impact do bacteria, which have been recruited by a plant from the soil, have on plant performance in nature (here: coyote tobacco Nicotiana attenuata)? Can they improve nutrient uptake, do they increase growth and fecundity? Can they provide resistance against the attack of herbivores, such as the tobacco hornworm Manduca sexta? And what happens if plants producesexpress antimicrobial peptides (AMP) which target specific bacterial partners? The results of the study show that AMP activity leaves the plants and their bacterial partners largely unimpressed.