See the program book (PDF) - American Phytopathological Society

P-252 Impact of temperature on virulence of Pythium
volutum toward creeping bentgrass. J. P. KERNS
(2), L. P. Tredway (1). (1) NCSU, Dept. of Plant
Pathology, (2) University of Wisconsin-Madison,
Dept. of Plant Pathology, Madison, WI, U.S.A.
P-253 Alfalfa common leaf spot pathogen and its effects on
related enzymatic activity of the host plant. J. Wang
(1), L. ZHOU (1). (1) China Agricultural University
P-254 Inhibition of mycelial growth of a plant pathogenic
fungus by electricity. Y. JO (1), E. Kim (2), G. Jung
(2), B. Kim (2). (1) Texas A&M University, College
Station, TX, U.S.A., (2) University of Massachusetts,
Amherst, MA, U.S.A.
P-255 The effect of nitrogen, sulfur and fungicide
applications on the severity of necrotic ring spot of
Kentucky bluegrass. N. Brandt (1), A. Koski (1), N.
TISSERAT (1). (1) Colorado State University
P-256 Landscape-scale biogeography of Sclerotinia
homoeocarpa causing turfgrass dollar spot disease
across New Jersey and the New York/Philadelphia
metropolitan region. L. A. BEIRN (1), B. B. Clarke
(1), J. Crouch (1). (1) Rutgers University, New
Brunswick, NJ, U.S.A.
P-257 Evaluation of transgenic Ophiosphaerella herpotricha
expressing green and red fluorescent proteins in
turf-type bermudagrass. O. C. CAASI (2), N. R.
Walker (2), S. M. Marek (2), T. K. Mitchell (1). (1)
Ohio State University, Columbus, OH, U.S.A., (2)
Oklahoma State University, Stillwater, OK, U.S.A.
Forest pathology
P-258 Differences in constitutive and induced expression
of two phenolic compounds in coast live oaks
susceptible and resistant to infection by Phytophthora
ramorum. A. M. NAGLE (2), M. Garbelotto (1), P.
Bonello (2). (1) Dept. of Environmental Science,
Policy, & Management, University of California,
Berkeley, CA, U.S.A., (2) Dept. of Plant Pathology,
The Ohio State University, Columbus, OH, U.S.A.
P-259 Survival and histopathology of eastern white pine
seedlings from controlled crosses infected with
Cronartium ribicola. J. J. JACOBS (1), T. A. Burnes
(1), J. A. Smith (2), C. Sweeney (3), A. J. David
(4), R. A. Blanchette (1). (1) Department of Plant
Pathology, University of Minnesota, St. Paul,
MN, U.S.A., (2) School of Forest Resources and
Conservation, University of Florida, Gainesville, FL,
U.S.A., (3) U.S. Forest Service - Oconto River Seed
Orchard, White Lake, WI, U.S.A., (4) University of
Minnesota, North Central Research and Outreach
Center, Grand Rapids, MN, U.S.A.
P-260 Fungi associated with frequently prescribed burns of
longleaf pine roots. P. SPAINE (1), W. Otrosina (1),
M. Sword-Sayer (1), S. Sung (1), J. Haywood (1), D.
Leduc (1). (1) USDA Forest Service
P-261 Longevity of inoculum production by Diplodia pinea
on red pine cones. I. A. MUNCK (1), G. R. Stanosz
(1). (1) Department of Plant Pathology, University of
Wisconsin-Madison, WI, U.S.A.
P-262 Distribution of Diplodia pinea and D. scrobiculata
in red and jack pine forests of Minnesota. J. S.
ALBERS (2), D. R. Smith (1), G. R. Stanosz (1).
(1) Department of Plant Pathology, University
of Wisconsin-Madison, WI, U.S.A., (2) Division
of Forestry, Minnesota Department of Natural
Resources, Grand Rapids, MN, U.S.A.
P-263 Response of Alnus tenuifolia to inoculation with Valsa
melanodiscus. G. R. STANOSZ (3), L. M. Trummer
(5), J. K. Rohrs-Richey (1), G. C. Adams (2), J. T.
Worrall (4). (1) Department of Biology and Institute
of Arctic Biology, University of Alaska Fairbanks,
AK, U.S.A., (2) Department of Plant Pathology,
Michigan State University, East Lansing, MI, U.S.A.,
(3) Department of Plant Pathology, University of
Wisconsin-Madison, WI, U.S.A., (4) USDA Forest
Service, Forest Health Management, Gunnison,
CO, U.S.A., (5) USDA Forest Service, Forest Health
Protection, Anchorage, AK, U.S.A.
P-264 Sudden aspen decline in southwest Colorado. J. J.
WORRALL (1), R. A. Mask (1), T. Eager (1), L.
Egeland (1), W. D. Shepperd (2). (1) USDA Forest
Service, Gunnison, CO, U.S.A., (2) USDA Forest
Service, Rocky Mountain Research Station (retired),
Fort Collins, CO, U.S.A.
P-265 Susceptibility of six eastern Canadian forest
species to Phytophthora ramorum. A. Jinek (4), M.
Simard (4), S. C. Brière (1), A. K. Watson (3), R.
J. TWEDDELL (2), D. Rioux (4). (1) Canadian
Food Inspection Agency, Ottawa, ON, Canada, (2)
Centre de recherche en horticulture, Université Laval,
Québec, QC, Canada, (3) Department of Plant
Science, McGill University, St-Anne-de-Bellevue,
QC, Canada, (4) Natural Resources Canada,
Laurentian Forestry Center, Québec, QC, Canada
P-266 New host associations and potential overwintering
strategies of Melampsora species on poplar and willow
in North America. L. L. MOUNT (1), J. A. Smith
(1), R. A. Blanchette (2). (1) University of Florida,
Gainesville, FL, U.S.A., (2) University of Minnesota,
St. Paul, MN, U.S.A.
P-267 Development of a real-time PCR assay for detection
of the Raffaelea species causing Laurel wilt disease.
T. J. DREADEN (2), J. A. Smith (2), A. E. Mayfield
(1). (1) Florida DACS Division of Forestry,
Gainesville, FL, U.S.A., (2) University of Florida,
Gainesville, FL, U.S.A.
P-268 Resistance of Pinus contorta and P. sylvestris to
Gremmeniella abietina (European race) in Sweden.
A. Bernhold (1), P. Hansson (1), D. Rioux (2), M.
Simard (2), G. LAFLAMME (2). (1) Department of
Forest Ecology and Management, Swedish University
of Agricultural Sciences (SLU), Umeå, Sweden, (2)
Natural Resources Canada, Canadian Forest Service,
Laurentian Forestry Centre, Quebec (QC), Canada
P-269 Bitternut hickory stem cankers and bark necrosis
resulting from inoculations with Ceratocystis spp. and
Fusarium solani. J. JUZWIK (3), L. Haugen (2), J.
Park (1). (1) Dept. of Plant Pathology, University of
Minnesota, St. Paul, MN, U.S.A., (2) NA State &
Private Forestry, U.S. Forest Service, St. Paul, MN,
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