Numerous pathogenic or parasitic organisms attack plant roots to obtain nutrients, and the apoplast including the plant cell wall is where the plant cell meets such organisms. Root parasitic angiosperms and nematodes are two distinct types of plant root parasites but share some common features in their strategies for breaking into plant roots. Striga and Orobanche are obligate root parasitic an...

Roger Gordon is a Professor at Memorial University of Newfoundland. He received his Honours B.Sc. (Zoology) and Ph.D. (Zoology) from the University of Sheffield, England, specializing in the areas of entomology and parasitology. He teaches courses in entomology, parasitology, animal physiology, general zoology, and introductory biology. His research interests include the study of host-parasite ...

Effects of live and dead (heat-killed) infective juveniles (IJs) of the entomopathogenic nematode Steinernema carpocapsae on nematodes associated with boxwood Buxus spp. were evaluated in field experiments during 1999 and 2000. Both living and dead IJs of S. carpocapsae were equally effective, causing more than 50% reduction in total populations of plant-parasitic nematodes relative to the cont...