Thomas L. Rost is a professor of plant biology at the University of California, Davis and is currently the Executive Associate Dean there in the Division of Biological Sciences. He received his B.S. in biology from St. John's University, his M.A. in biology from Mankato State University, and his Ph.D. in botany from Iowa State University. He has taught developmental plant anatomy for almost 30 years. His primary research interests include the structure and development of roots in vascular plants and structural aspects of Pierce's disease in grape vines.
