Jim Crosslin obtained a Bachelor’s degree in Agronomy from California Polytechnic, Pomona, in 1981; a Master’s degree in Plant Pathology from Montana State University in 1984; and a PhD in Plant Pathology from Washington State University in 1990. He has worked on virus diseases of barley, tree fruits, hops, beans, and, most recently, potatoes. Dr. Crosslin has been a Research Plant Pathologist with the USDA Agricultural Research Service in Prosser, Washington, since 2003, with responsibilities for virus and virus-like diseases of potato. Much of his research is on Potato virus Y, Tobacco rattle virus, Potato mop top virus, and diseases caused by phytoplasmas. More recently, most of his work has been on zebra chip disease of potatoes, which is caused by a bacterium transmitted by the potato psyllid.