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General Technical Report

Title: Proceedings of the sudden oak death sixth science symposium

Author: Frankel, Susan J.; Harrell, Katharine M., tech. coords.

Date: 2017

Source: Gen. Tech. Rep. PSW-GTR-255. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture.

Station ID: GTR-PSW-255

Description: The Sudden Oak Death Sixth Science Symposium provided a forum for current research on sudden oak death, caused by the exotic quarantine pathogen Phytophthora ramorum. More than 50 submissions describing papers or posters on the following sudden oak death/P. ramorum topics are included: biology, genetics, nursery and wildland management, monitoring, and ecology. Abstracts are also provided from a special session on Phytophthoras in California native plant nurseries and restoration sites.

Citation

Frankel, Susan J.; Harrell, Katharine M., tech. coords. 2017. Proceedings of the sudden oak death sixth science symposium. Gen. Tech. Rep. GTR-PSW-255. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 106 p.

View and print the entire publication (5.1 MB) or the individual papers below.

Front Matter

Cover, conference information, abstract, contents

Impacts and Status of Phytophthora ramorum

1
Slowing Spread of Sudden Oak Death in Oregon Forests, 2001–2015
Alan Kanaskie, Randy Wiese, Danny Norlander, Jon Laine, Sarah Navarro, Ellen Michaels Goheen, Ron Rhatigan, Everett Hansen, Wendy Sutton, Paul Reeser, Nik Grünwald, Zhian Kamvar, and Nancy Osterbauer
2
Lessons from 15 Years of Monitoring Sudden Oak Death and Forest Dynamics in California Forests
Margaret Metz, J. Morgan Varner, Ross Meentemeyer, Kerri Frangioso, and David Rizzo
4
Phytophthora ramorum: Update On the Impact and Wider Consequences of the Epidemic in Britain
J.F. Webber

Sudden Oak Death and Landscape Ecology

7
Resilience of Diversity-Disease Risk Interactions Following Wildfire Disturbance
Devon A. Gaydos, Krishna Pacifici, Ross K. Meentemeyer, and David. M Rizzo
8
Effects of Diversity, Topography, and Interannual Climate Variability on Pathogen Spillover
Whalen W. Dillon, Ross K. Meentemeyer, and David M. Rizzo
9
Collaboratively Managing Sudden Oak Death Using Tangible Geospatial Modeling
Ross K. Meentemeyer, Francesco Tonini, Douglas Shoemaker, Richard C. Cobb, Brendan A. Harmon, Vaclav Petras, Anna Petrasova, and Helena Mitasova
11
How Well Has the Spread of Sudden Oak Death Been Predicted by the Models in Northern California?
Yana Valachovic, Richard Cobb, and Brendan Twieg

Sudden Oak Death Management

13
Lessons Learned from the USDA Forest Service, Pacific Southwest Region, Sudden Oak Death Management Program
Phil Cannon, Susan J. Frankel, and Pete Angwin
15
Conditions 10 Years after Sudden Oak Death Suppression Treatments in Humboldt County, California
Yana Valachovic, Richard Cobb, and Brendan Twieg
19
Reducing CO2 Emissions by Managing for Sudden Oak Death...Is It Possible?
Brendan Twieg, Yana Valachovic, Richard Cobb, and Dan Stark
23
Restoration of Mount Tamalpais Forests Destroyed by the Sudden Oak Death Pathogen
Richard C. Cobb, David M. Rizzo, Kerri Frangioso, Peter Hartsough, Janet Klein, Mike Swezy, Andrea Williams, Carl Sanders, and Susan J. Frankel
24
Managing Sudden Oak Death on Federal Lands in Southwest Oregon: Triumphs and Challenges
Ellen Michaels Goheen

Ecology: Forest Change Over Time

25
Long-Term Monitoring of Sudden Oak Death in Marin County and the East Bay Hills
Brice A. McPherson, Greg Biging, Maggi Kelly, and David L. Wood
27
Novel Interactions between Wildfire and Sudden Oak Death Influence Sexual and Asexual Regeneration in Coast Redwood Forests
Allison B. Simler, Margaret R. Metz, Ross K. Meentemeyer, Kerri M. Frangioso, and David M. Rizzo
29
Vibrational Spectroscopy-Based Chemometrics to Map Host Resistance to Sudden Oak Death
Pierluigi (Enrico) Bonello, Anna O. Conrad, Luis Rodriguez Saona, Brice A. McPherson, and David L. Wood
31
Urban Activities Influence on Phytophthora Species Diversity in British Columbia, Canada
Angela Dale, Nicolas Feau, Julien Ponchart, Guillaume Bilodeau, Jean Berube, and R.C. Hamelin

Acute Oak Decline in the United Kingdom

33
A Polyphasic Approach to Gaining Insights Into Causes of Acute Oak Decline in Britain
Sandra Denman
34
Monitoring for Pests and Diseases in Native Oak Woodlands: The Case of Acute Oak Decline in the United Kingdom
Nathan Brown, Stephen Parnell, Frank van den Bosch, Mike Jeger, and Sandra Denman

Genetics

36
Transcriptome Analysis of Tanoak Reveals Divergent Mechanisms of Innate and Phosphite-Induced Resistance to Phytophthora ramorum
Catherine A. Eyre, Katherine J. Hayden, Peter Croucher, Shannon Schechter, Jessica W. Wright, and Matteo Garbelotto
37
Host-Induced Genome Alterations in Phytophthora ramorum I. NA1 Lineage on Coast Live Oak in California II. EU1 Lineage on Chamaecyparis lawsoniana in UK
Takao Kasuga, Mai Bui, Elizabeth Bernhardt, Tedmund Swiecki, Kamyar Aram, Lien Bertier, Jennifer Yuzon, Liliana M. Cano, Joan Webber, Clive Brasier, Caroline Press, Niklaus Grünwald, David Rizzo, and Matteo Garbelotto
40
Analysis of Populations of the Sudden Oak Death Pathogen in Oregon Forests
Zhian N. Kamvar, Everett M. Hansen, Alan M. Kanaskie, Meredith M. Larsen, and Niklaus J. Grünwald
41
Biological Differences Between the Evolutionary Lineages Within Phytophthora ramorum and Phytophthora lateralis: Should the Lineages Be Formally Taxonomically Designated?
Clive Brasier

Nurseries and Managed Landscapes

43
Managing Phytophthora ramorum at Bloedel Reserve
Darren Strenge, Marianne Elliott, Gary Chastagner, Casey Sclar, and Daniel Stern
45
Hot Spots of Phytophthora in Commercial Nurseries
Corina Junker, Patrick Goff, Stefan Wagner, and Sabine Werres
46
Pilot Program (Proof of Concept) to Mitigate Phytophthora ramorum at an Infested Nursery Based on a Systems Approach
Gary Chastagner and Marianne Elliott
48
Incubation of Phytophthora ramorum-Infested Leaf Debris in Soil Affects Survival, Sporulation Capacity, and Subsequent Risk of Epidemic Development Within Nurseries
Ebba K. Peterson, Niklaus J. Grünwald, and Jennifer L. Parke
49
Relative Heat Sensitivities of Certain Phytophthora spp. and the Potential for Soil Solarization to Disinfest Nursery Beds in West Coast States
Jennifer L. Parke, Fumiaki Funahashi, Clara Weidman, and Ebba K. Peterson

Phytophthora Detections in Native Plant Nurseries and Restoration Sites

51
An Update on Phytophthora Species in California Native Plant Nurseries and Restoration Areas
S. Rooney-Latham, C.L. Blomquist, M.C. Soriano, Y.Y. Guo, P. Woods, K.L. Kosta, K. Weber, T.J. Swiecki, E.A. Bernhardt, K. Suslow, and S.J. Frankel
52
Restoration Outplantings of Nursery-Origin Californian Flora Are Heavily Infested with Phytophthora
Tyler B. Bourret, Heather K. Mehl, David M. Rizzo, Tedmund J. Swiecki, Elizabeth A. Bernhardt, and Janell M. Hillman
53
Testing and Implementing Methods for Managing Phytophthora Root Diseases in California Native Habitats and Restoration Sites
Tedmund J. Swiecki and Elizabeth A. Bernhardt
56
Steam, Solarization, and Tons of Prevention: The San Francisco Public Utilities Commission's Fight to Contain Phytophthoras in San Francisco Bay Area Restoration Sites
Greg Lyman, Jessica Appel, Mia Ingolia, Ellen Natesan, and Joe Ortiz
57
31 Flavors to 50 Shades of Grey: Battling Phytophthoras in Native Habitats Managed by the Santa Clara Valley Water District
Janet Hillman, Tedmund J. Swiecki, Elizabeth A. Bernhardt, Heather K. Mehl, Tyler B. Bourret, and David Rizzo
58
The Golden Gate National Parks Phytophthora Response Plan
Alisa Shor, John Doyle, Sharon Farrell, Alison Forrestel, Christa Conforti, Lew Stringer, Terri Thomas, and Laura Lee Sims

Posters

60
Phytophthora ramorum and Phytophthora gonapodyides Differently Colonize and Contribute to Decay of California Bay Laurel (Umbellularia californica) Leaf Litter in Stream Ecosystems
Kamyar Aram and David M. Rizzo
62
Determining the Amount of Soilborne Inoculum of Phytophthora ramorum Within an Oregon Tanoak Forest
Christina Benemann and Jennifer Parke
63
Rhododendron Leaf Baiting of Coastal California Watersheds for Phytophthora
Tyler B. Bourret, Heather K. Mehl, Kamyar Aram, and David M. Rizzo
64
Microsatellite Analysis of the EU1 Lineage of Phytophthora ramorum in Washington State Nurseries, Landscapes, and Waterways
Katie Coats, Marianne Elliott, and Gary Chastagner
65
How Do We Know if Plants in Our Nursery Have Phytophthora? Detection Methods and an Integrated Approach to Monitoring
Christa Conforti
66
Next Generation Sequencing of Oomycete Communities in Nursery Irrigation Water
Joyce Eberhart, Fumiaki Funahashi, Zachary S. L. Foster, and Jennifer Parke
70
Monitoring Streams and Stormwater Ponds for Early Detection of Oomycete Plant Pathogens in Western Washington, a Citizen Science Project
Marianne Elliott, Lucy Rollins, and Gary Chastagner
72
Testing Biological Control Agents for Suppression of Phytophthora ramorum in Potting Mixes in a Simulated Nursery Environment
Marianne Elliott and Gary Chastagner
73
Development of a Predictive Model to Estimate the Effect of Soil Solarization on Survival of Soilborne Inoculum of Phytophthora ramorum and Phytophthora pini
Fumiaki Funahashi and Jennifer L. Parke
74
CALINVASIVES: A Revolutionary Tool to Monitor Invasive Threats
M. Garbelotto, S. Drill, C. Powell, and J. Malpas
75
Validation of the Bait Test with Rhododendron Leaves for Phytophthora Diagnosis
Corina Junker and Sabine Werres
76
Diversity of Foliar Phytophthora Species on Rhododendron in Oregon Nurseries
B.J. Knaus, K.A. Graham, Niklaus J. Grünwald, and Valerie J. Fieland
77
Development of Reagents for Immunoassay of Phytophthora ramorum in Nursery Water Samples
Douglas G. Luster, Timothy Widmer, and Michael McMahon, and C. André Lévesque
78
Sentinel Plant Monitoring of Phytophthora ramorum at a Research Nursery Over a Six-Year-Period Indicates Limited Aerial Pathogen Spread
Tomas Pastalka, Karen Suslow, and Wolfgang Schweigkofler
79
Management of Foliar Infection of Rhododendron by Phytophthora ramorum with Film Forming Polymers and Surfactants
Ebba K. Peterson, Eric Larson, and Jennifer L. Parke
81
Soil Moisture and Temperature Conditions Affect Survival and Sporulation Capacity of Rhododendron Leaf Disks Infested with Phytophthora ramorum
Ebba K. Peterson, Niklaus J. Grünwald, and Jennifer L. Parke
83
Identification of Five New Hosts of Phytophthora ramorum in an Infested Forest in California
S. Rooney-Latham, C.L. Blomquist, A. Williams, E. Gunnison, and T. Pastalka
85
Host Range Determination and Fungicide Resistance Assessment of Phytophthora lateralis Isolates from Horticultural Nurseries in Oregon
Franziska Rupp, Ebba K. Peterson, Joyce Eberhart, and Jennifer L. Parke
87
Thermal Inactivation of Infested Plants, Nursery Equipment, and Soil is a Management Option for the Treatment of Phytophthora ramorum, Causal Agent of Sudden Oak Death
Wolfgang Schweigkofler, Vernon Huffman, Karen Suslow, and Kathleen Kosta
88
Research on the Quarantine Pathogen Phytophthora ramorum at the National Ornamentals Research Site at Dominican University of California
Wolfgang Schweigkofler, Kathleen Kosta, Tomas Pastalka, Vernon Huffman, Supriya Sharma, and Karen Suslow
91
Potential Susceptibility of Canadian Flora to EU2 Lineage of Phytophthora ramorum
S.F. Shamoun,G. Sumampong, D. Rioux, and A. Schlenzig
99
Interaction of Trichoderma asperellum with Phytophthora ramorum Inoculum Soil Populations and Enzyme Secretion
Supriya Sharma, Wolfgang Schweigkofler, Karen Suslow, Timothy L. Widmer
100
Solarization of Reused Pots Is an Inexpensive and Efficient Method to Eliminate Phytophthora cactorum and Other Serious Soilborne Phytophthora spp. Found in Production Nurseries
K. Suslow, S. Sharma, K. Kosta, Kristina Weber, and S. Rooney-Latham
102
The Effect of Moisture on Infection of Rhododendron 'Cunningham's White' and Viburnum tinus by Zoospores of Phytophthora ramorum
Paul W. Tooley and Marsha Browning
103
This Tree Is Not Big Enough for the Both of Us: Symptoms of Phytophthora ramorum on California Bay Laurel Are Lower When Insect Herbivores Are Abundant
Kerry E. Wininger and Nathan Rank
104
Longevity of Active Phytophthora ramorum in Terminal Tree Hosts following the Removal of Primary Sporulating Hosts
Barnaby Wylder, Mick Biddle, Anna Harris, and Joan Webber
105
Resequencing of the Phytophthora ramorum Genome to Characterize Genetic Variation and Population Dynamics of the Invasive Pathogen
Jennifer Yuzon, David M. Rizzo, Mathu Malar C, Sucheta Tripathy, and Takao Kasuga