April 18, 2019 - Anne Britt, Ph.D., Professor of Plant Biology at UC-Davis, "Cell Type-Specific Programmed Cell Death Triggers Recovery of the Stem Cell Niche After Irradiation"
April 28, 2018 - James Tumlinson, PhD, Professor of Entomology, Co-director, Center for Chemical Ecology at Penn State University, "The Role of Green Leaf Volatiles in Plant Signaling"
March 28, 2017 - VIrginia Walbot, PhD, Professor of Biological Sciences at Stanford University, "Building a Maize Anther"
March 22, 2016 - Michael Donoghue, PhD, Sterling Professor, Department of Ecology and Evolutionary Biology at Yale University, "Biome Shifting and Diversification Dynamics: Insights From Viburnum Evolution"
April 28, 2015 - Michael R. Sussman, PhD, Bascom Chair Professor, Department of Biochemistry and Director, Biotechnology Center at the University of Wisconsin-Madison.
April 28, 2014 – Dr. Susan Singer, Director, Division of Undergraduate Education at NSF and Laurence McKinley Gould Professor, in the Biology and Cognitive Science Departments at Carleton College.
April 25, 2013 – Dr. Phil Robertson, Distinguished Professor of Ecosystem Science, Dept. of Plant, Soil, and Microbial Sciences, Michigan State University. Director of NSF Long-Term Ecological Research Program in Agricultural Ecology at W.K. Kellogg Biological Station. Program leader for sustainability research, Department of Energy’s Great Lakes Bioenergy Research Center.
April 12, 2012 – Dr. Karl Joseph Niklas, Liberty Hyde Bailey Professor, Cornell University,
April 13, 2011 – Dr. Mark Estelle, Distinguished Professor and Chair, Section of Cell and Developmental Biology, University of California-San Diego, “Auxin Signaling is Both Simple and Complex”
April 6, 2010 – Dr. Sarah Hake, USDA-ARS, Director, Plant Gene Expression Center, Adjunct Professor, University of California-Berkeley, Member, National Academy of Sciences, “The Regulation of Plant Architecture in Maize”
April 7, 2009 – Dr. William Lucas, University of California, Davis, Department of Plant Biology, “Plasmodesmata & the Phloem: Partners in the Trafficking of Information Macromolecules”
March 27, 2008 – Dr. Stephen Jacobsen, Howard Hughes Medical Institute, Department of MCD BiologyUniversity of California, Los Angeles, “Genetics and Genomics of DNA Methylation Patterning”
April 30, 2007 – Dr. Joanne Chory, Professor and Director, Plant Biology Laboratory, The Salk Institute for Biological Studies, The Howard Hughes Medical Institute, “Steroid Signaling in Plants: The First Decade”