Sessions Sponsored by the Forest Pathology Committee at the
2007 APS Annual Meeting

Joint APS/SON meeting will be held July 28 – August 1, 2007, in San Diego, California

No Forest Pathology Field Trip in 2007… Other committees sponsored field trips on Fruit Trees and small fruit crops, and on Ornamental Horticulture.


International Movement of Ornamental and Forestry Diseases

Section: Diseases of Plants
Organizers: Warren Copes, USDA-ARS, Poplarville, MS; Cristi Palmer, Rutgers University, Princeton, NJ; Karl Steddom, Texas Cooperative Extension, Overton, TX Sponsoring Committees: Diseases of Ornamental Plants, Forest Pathology

This symposium will serve as a forum to facilitate dialogue regarding the global movement of ornamental and forest pathogens. Invited speakers will highlight the impact and significance regarding the global movement of several new and emerging diseases.

Case Study 1: Ralstonia solanacearum on Geranium. MIKE KLOPMEYER, Ball Horticulture Company, West Chicago, IL

Case Study 2: Hosta Viruses and Movement from Holland. BEN LOCKHART, University of Minnesota, St. Paul, MN

Case Study 3. International Movement of Phytophthora – Part 1 & 2. STEVE JEFFERS, Clemson University, Clemson, SC

Introduced Pathogens and Their Impact on Ornamentals and Forestry in the United States – Part 1 & 2. KERRY BRITTON, USDA National Forest Service, Arlington, VA

Movement of Pathogens on Forestry Plants Shipped Between Canada and the United States. SHANE CELA, Canadian Forestry, Canada

Movement of Pathogens on Ornamentals Shipped Between Canada and the United States. MIKE WOOD, Canadian Forestry Service, Canada

The U.S. Ornamental Horticulture Industry Perspective on International Plant Pathogen Movement and Steps to Mitigate Spread—Greenhouse Crops. LIN SCHMALE, Society of American Florists, Alexandria, VA

The U.S. Ornamental Horticulture Industry Perspective on International Plant Pathogen Movement and Steps to Mitigate Spread—Nursery Crops. MARC TEFFEAU, American Nursery Landscape Association, Washington, D.C.


Approaches for Predicting Establishment and Expansion of Exotic Invasive Forest Pathogens

Section: Epidemiology / Ecology / Environmental Biology
Organizers: Ned Klopfenstein, USDA Forest Service, Moscow, ID; Jennifer Juzwik, USDA Forest Service, St. Paul, MN; Mo-Mei Chen, University of California-Berkeley, Berkeley, CA

Approaches to predict potentially invasive forest pathogens could help avoid enormous environmental and economic impacts to forest ecosystems. Phylogeography, population genetics, and climate modeling can contribute to predictions of invasive potential for exotic forest pathogens. The most powerful predictions will likely integrate biological, ecological, and physiographic information.

Disjunct Plants Between North America and Eastern Asia as a Potential Source of Invasive Pathogens. QINFENG GUO, USDA Forest Service–SRS, Asheville, NC

Phylogenetics of Forest Hosts and Pathogens: An Approach to Identify Potentially Invasive Pathogens. BRYCE A. RICHARDSON, USDA Forest Service–RMRS, Moscow, ID

Phytogeography and Ecology of Pine Rusts: A Basis for Insights into Invasive Forest Pathogens. MO-MEI CHEN, University of California, Berkeley, CA

Principles of Invasion Biology: A Foundation to Predict Pathogen Invasiveness. ROBERT C. VENETTE, USDA Forest Service–Northern Research Station, St. Paul, MN