United States Department of Fourth International Workshop on Agriculture Forest Service the Genetics of Host-Parasite Pacific Southwest Interactions in Forestry Research Station D E E P R A U R T LT MENT OF AGRICU Meeting Abstracts July 31 – August 5, 2011, Eugene, Oregon, USA The Forest Service of the U.S. Department of Agriculture is dedicated to the principle of mul- tiple use management of the Nation’s forest resources for sustained yields of wood, water, forage, wildlife, and recreation. Through forestry research, cooperation with the States and private forest owners, and management of the National Forests and National Grasslands, it strives—as directed by Congress—to provide increasingly greater service to a growing Nation. 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Follow recommended practices for the disposal of surplus pesticides and pesticide containers. Fourth International Workshop on the Genetics of Host-Parasite Interactions in Forestry July 30 – August 5, 2011 Eugene, Oregon, USA Meeting Abstracts Welcome ........................................................................................... 2 Conference Sponsors ..................................................................... 3 Program Overview ......................................................................... 4 Oral Presentation Abstracts ......................................................... 5 Poster Abstracts ............................................................................. 73 1 Welcome Welcome to the Fourth International Workshop on the Genetics of Host-Parasite Interactions in Forestry. Your participation is greatly appreciated. This meeting is intended to provide a forum for information sharing and thought-provoking discussions among researchers from various disciplines as well as policy makers, industry representatives, regulators, and land managers. Presentations this week will provide an overview of the most current scientific information available on forest insect and disease resistance for a range of forest pests worldwide. Technical Committee • Richard Sniezko, USDA Forest Service, Dorena Genetic Resource Center, USA • Alvin Yanchuk, British Columbia Ministry of Forests and Range, Canada • Dan Herms, Ohio State University, USA • Everett Hansen, Oregon State University, USA • Jeff Stone, Oregon State University, USA • Anna Schoettle, USDA Forest Service, Rocky Mountain Research Station, USA • Susan Frankel, USDA Forest Service, Pacific Southwest Research Station, USA • Dana Nelson, USDA Forest Service, Southern Research Station, USA • Fred Hebard, The American Chestnut Foundation, USA • Acelino Couto Alfenas, Universidade Federal de Viçosa, Brazil • Arnaud Dowkiw, French National Institute for Agricultural Research (INRA Orléans), France • Luis Sampedro, Centro de Investigación Forestal de Lourizán at Galicia, Spain • Alberto Santini, Istituto per le Protezione delle Piante—National Research Council (CNR), Italy • Charles G. “Terry” Shaw, USDA Forest Service, Western Wildland Environmental Threat Assessment Center, USA • Dan Quiring, University of New Brunswick, Canada • Fred Hain, North Carolina State University, USA • Brian Stanton, GreenWood Resources, Inc., USA • Bohun B. Kinloch, USDA Forest Service, Pacific Southwest Research Station, Institute of Forest Genetics (retired), USA • Fikret Isik, Research Associate Professor of Quantitative Genetics, NCSU Cooperative Tree Improvement Program, North Carolina State University, Raleigh, North Carolina, USA 2 Local Organizing Committee • Richard Sniezko, USDA Forest Service, Dorena Genetic Resource Center, Oregon ▪ Workshop Chair • Katie Palmieri, University of California, Berkeley, California Oak Mortality Task Force • Janice Alexander, University of California, Cooperative Extension, Marin County, California Oak Mortality Task Force • Susan Frankel, USDA Forest Service, Pacific Southwest Research Station, California • Angelia Kegley, USDA Forest Service, Dorena Genetic Resource Center, Oregon • Sunny Lucas USDA Forest Service, Dorena Genetic Resource Center, Oregon • Michael Crawford, USDI Bureau of Land Management, Oregon • Larry Johnston, USDI Bureau of Land Management, Oregon Conference Sponsors IUFRO Working Parties: 7.03.11 (Resistance to Insects) and 2.02.15 (Breeding and Genetic Resources of Five-Needle Pines) USDA Forest Service: • Western Wildland Environmental Threat Assessment Center (WWETAC) • Eastern Wildland Environmental Threat Assessment Center (EWETAC) • Pacific Northwest Region (Forest Health Protection & Genetic Resource Programs) • Pacific Southwest Research Station (PSW) King Estate Winery University of California Cooperative Extension California Oak Mortality Task Force Futuragene Starker Forests 3 Program Overview Sunday, July 31 Early registration at Valley River Inn Welcome Reception Monday, August 1 Registration Symposium/Indoor Presentations Evening 2-Hour Statistics Workshop Tuesday, August 2 Registration Symposium/Indoor Presentations Evening Poster Session and Reception Wednesday, August 3 Field Trip • Dorena Genetic Resource Center • Plum Creek Timber Company • Bureau of Land Management, Tyrrell Orchard Complex • King Estate Winery, Reception Thursday, August 4 Symposium/Indoor Presentations Friday, August 5 Symposium/Indoor Presentations Meeting Adjourned 4 ABSTRACTS FROM THE FOURTH INTERNATIONAL WORKSHOP ON HOST-PARASITE INTERACTIONS IN FORESTRY Oral Presentation Abstracts (alphabetically by author’s last name) 5 PACIFIC SOUTHWEST RESEARCH STATION An Overview of Ecological and Evolutionary Research on Disease in Natural Systems Helen M. Alexander, Department of Ecology and Evolutionary Biology, University of Kansas, 1200 Sunnyside Ave., Lawrence, KS 66045; [email protected] Plant diseases have obvious and serious ramifications for agriculture and forestry; as a consequence, most research on plant pathogens has logically focused on economically important diseases. However, pathogens are associated with nearly all plant species. In recent decades, there has been increasing interest in the role of pathogens interacting with a diverse range of natural plant populations, communities, and ecosystems. Truly “natural” plant populations of course no longer exist; human activity has influenced all corners of the world. One can consider, however, characteristics of more natural systems in contrast to row crops of western agriculture or plantation forestry. For example, one can define natural systems as those in which plant species are genetically diverse and occur in multispecies communities with often complex spatial patterns. Further, in contrast to many human-managed plant populations, natural systems have linkage between genera- tions: hence, the seeds produced by plants at a particular site are the likely source of future plant generations. Research on disease in natural systems has a long history; for example, there has always been interest in searching for disease resistance genes in wild relatives of crop plants or considering wild plants as reservoirs for economically important pathogens. However, most researchers associated with ecology and evolutionary biology disciplines have historically ignored host-pathogen interactions. Starting in the 1980’s, this situation began to change and there are now rigorous research programs on host-pathogen interactions in diverse natural systems. Researchers, for example, have examined the factors determining spatial patterns of disease and the effect of disease on plant population growth. Others study patterns and roles of variation in plant resistance and pathogen virulence at spatial scales ranging from populations to continents. Community ecologists have addressed the importance of disease in altering the composition