although the latter nematode showed low infection numbers in tomato. In subsequently conducted split-root experiments, consisting of a two-compartment set-up, AMF were applied either locally (i.e. nematodes in the same compartment as AMF) or systemically (i.e. nematodes and AMF physically separated). The presence of AMF, either local or systemic, resulted in a significant infection reduction for both nematodes. The results show for the first time that infection by the root-knot nematode M. incognita and the root-lesion nematode P. penetrans is systemically reduced by G. mosseae.