Affiliation: | 1. Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331, USA;2. G. Hoffman Consulting Services, 1914 5th St. SW, Calgary, Alberta T2S 2B3, Canada;3. Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon 97331, USA Department of Environmental and Plant Biology, Ohio University, Athens, Ohio 45701, USA |