Sessions Sponsored by the Forest Pathology Committee at the
2009 APS Annual Meeting

The 2009 APS meeting was held August 1-5, in Portland, Oregon.

In addition to the field trip, special session and technical session listed below, there were also many forest pathology posters.

Forest Pathology Field Trip
Section: Disease of Plants
Organizer: Ellen Goheen, USDA Forest Service, Central Point, OR
Sponsoring Committee: Forest Pathology

This one-day field trip, departing from and returning to Portland, OR, will include stops to look at major tree diseases of forest ecosystems of northern Oregon and southern Washington.


Phytophthoras in Forests: New Paradigms for an Old Genus
Monday, August 3; 8:30 – 11:30 a.m.; A107-109
Section: Epidemiology/Ecology/Environmental Biology
Organizer: Everett Hansen, Oregon State University, Corvallis, OR
Sponsoring Committee: Forest Pathology, Mycology
Exploration of growing knowledge of the diversity and evolution, ecology and pathogenesis of Phytophthoras in forest ecosystems.

8:30 a.m.

S-62. Phytophthora in forests: New species, new threats, and new questions. E. HANSEN (1). (1) Oregon State University, Corvallis, OR, U.S.A.

9:00 a.m.

S-63. Progress in understanding Phytophthora evolutionary biology: 1983 revisited. C. BRASIER (1). (1) British Forestry Commission (retired), Alton, Hampshire, England, United Kingdom

9:30 a.m.

S-64. Examining the population diversity of Phytophthora species in natural and agricultural ecosystems. K. IVORS (1). (1) North Carolina State University, Mills River, NC, U.S.A.

10:00 a.m.

S-65. Phytophthora in forests: Feedbacks between pathogen and plant communities in forests. D. RIZZO (1). (1) University of California-Davis, CA, U.S.A.

10:30 a.m.

S-66. Landscape epidemiology of Phytophthora ramorum: Measuring, mapping, and modeling spread. R. MEENTEMEYER (1). (1) University North Carolina, Charlotte, NC, U.S.A.

11:00 a.m.

S-67. Pathogenicity of Phytophthora ramorum. D. MANTER (1). (1) ARS Fort Collins, Fort Collins, CO, U.S.A.


Forest Pathology Technical Session
Tuesday, August 4; 1:00 – 3:30 p.m.; Room A105
Moderators: Jean Berube, Canadian Forest Service, Quebec City, QC, Canada; Brent Oblinger, University of Wisconsin-Madison, Madison, WI, U.S.A.

1:00 p.m.

O-188. Early warning system against forest invasive alien fungal species on live plant material. J. A. BERUBE (1). (1) Canadian Forest Service, Quebec City, QC, Canada

1:15 p.m.

O-189. Phyllachora “tar spots” on Bauhinia species from the Brazilian Cerrado. J. A. Osorio (1), C. A. Inácio (1), J. C. DIANESE (1). (1) Universidade de Brasília, Brasília, Brazil

1:30 p.m.

O-190. White pine blister rust on new telial hosts (Castilleja and Pedicularis) in whitebark pine ecosystems at Mt. Rainier and Crater Lake National Parks. R. MULVEY (1), E. Hansen (1). (1) Oregon State University, Corvallis, OR, U.S.A.

1:45 p.m.

O-191. Attempts to naturally regenerate red pine can be threatened by Diplodia shoot blight damage to understory seedlings. B. W. OBLINGER (1), D. R. Smith (1), G. R. Stanosz (1). (1) University of Wisconsin-Madison, Madison, WI, U.S.A.

2:00 p.m.

O-192. Diverse and overlapping communities of the Botryosphaeriaceae on native and non-native trees in southern Africa. B. SLIPPERS (1), J. Roux (2), G. Marais (3), B. D. Wingfield (1), D. Pavlic (2), F. Van der Walt (2), H. M. Maleme (2), B. Hinze (2), M. J. Wingfield (4). (1) Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), Pretoria, South Africa; (2) Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, South Africa; (3) CSIR Biosciences and Forestry and Agricultural Biotechnology Institute, Pretoria, South Africa; (4) Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa

2:15 p.m.

O-193. Black walnut mortality in Colorado caused by the walnut twig beetle and thousand cankers disease. N. TISSERAT (1), W. Cranshaw (1), D. Leatherman (2), C. Utley (1), K. Alexander (3). (1) Colorado State University, Fort Collins, CO, U.S.A.; (2) Colorado State Forestry (retired), Ft. Collins, CO, U.S.A.; (3) Boulder County, Boulder, CO, U.S.A.

2:30 p.m.

O-194. Ground-level circumference of loblolly pine saplings is not a significant factor in fusiform rust infection. C. H. WALKINSHAW (1). (1) USDA Forest Service, Pineville, LA, U.S.A.

2:45 p.m.

O-195. Evolution of lodgepole pine phytochemical defenses to combat diseases. C. WALLIS (1), R. Reich (2), K. Lewis (1), D. Huber (1). (1) University of Northern British Columbia, Prince George, BC, Canada; (2) BC Ministry of Forests and Range, Prince George, BC, Canada

3:00 p.m.

O-196. Loblolly pine decline on Ft. Benning: An analysis of potential underlying causes. H. E. Balbach (1), W. J. OTROSINA (2), P. C. Spaine (2), S. S. Sung (3). , (1) US Army ERDC, Champaign, IL, U.S.A.; (2) USDA Forest Service, Athens, GA, U.S.A.; (3) USDA Forest Service, Pineville, LA, U.S.A.

3:15 p.m.

O-197. Assessment of longleaf pine on high-risk and low-risk loblolly pine decline sites at Fort Benning, Georgia. J. W. ZANZOT (1), L. G. Eckhardt (1). (1) Auburn University, Auburn, AL, U.S.A.