Figure 1.

Cross sections of feeding cells induced in plant roots by sedentary endoparasitic nematodes. A, Multinucleate giant cells (GC) induced by the root-knot nematode Meloidogyne incognita, derived from karyokinesis uncoupled from cytokinesis of plant cells adjacent to the nematode (N) head. B, A multinucleate syncytium (S) induced adjacent to the head of the cyst nematode (N) H. glycines, formed by dissolution of cell walls to incorporate neighboring plant cells into the feeding site (photo courtesy of Burton Y. Endo, U.S. Department of Agriculture Agricultural Research Service, Beltsville, MD). Reprinted from Davis et al. (2004) with permission from Elsevier.