UC Davis nematologists, including Valerie Williamson, professor emerita in the Department of Plant Pathology, and associate professor Shahid Siddique, Department of Entomology and Nematology, have long wondered how a plant-parasitic nematode, the Northern root-knot nematode, is able to infect such a wide range of organisms, from monocots and dicots to annual crops and woody plants.
