Bachelor of Science in Botany, Oregon State University, 1973. Doctor of Philosophy in Plant Pathology, University Wisconsin, Madison, 1977.
Assistant professor plant pathology University California at Berkeley, 1978-1983, associate professor plant pathology, since 1983. Consultant Advanced Genetic Sciences, Berkeley, 1983-1985. Member science advisory panel Shell Development, Modesto, California, since 1984.
Member American Phytopathol. Society (Chemical Industries Basel-GEIGY award 1985), American Society Plant Physiology, American Society Cryobiology, American Society Microbiology(Proctor & Gamble award in Applied and Environmental Microbiology, 2000).
Married Kathryn Preston, June 12, 1974 (divorced June 1981).