Project Title: Regional variation in North American fungal associates of Dendroctonus valens: What goes 'round comes 'round?
Principal Investigators: Nancy E. Gillette, PSW Research Station, Berkeley, CA; Donald R. Owen, California Department Forestry and Fire Protection, Redding, CA
E-mail Contact: Nancy Gillette, ngillette[at]fs.fed.us
Summary: Dendroctonus valens was introduced from North America to Asia and has become well established there. It has caused unprecedented losses of Pinus tabuliformis in China, and appears to attack all pine hosts with which it comes into contact there. It is expected to expand its range across Eurasia, and may well acquire new fungal associates, especially in the genus Ophiostoma and related imperfect genera such as Leptographium. Some of these fungal associates may be more virulent toward North American pines than indigenous fungi, especially as our native pines will not have evolved defenses against these exotic fungi. Forest health specialists in the United States and Canada are concerned about the risk of reintroduction of D. valens from Asia carrying new, exotic fungal associates. Very little is known about either the exotic or indigenous fungi, so it is difficult to identify new fungal introductions. The goal of this project is to identify and characterize the indigenous fungal associates of D. valens so that it will be possible to recognize new introductions. A parallel study is underway in China that is characterizing species of Asian Ophiostoma and related imperfect genera isolated from D. valens.
Study Objectives and Goals: Collect, isolate, and culture fungal associates across the range of D. valens in North America. Provide cultures of these fungi for molecular taxonomic work and quarantine cross-inoculations to FABI (Wingfield and Min), CAS (Sun), and U. Montana (Six), collaborators. Describe existing geographical variation in fungal associates of D. valens based on both molecular and morphological characters.
Collaborator(s) and Affiliations:
Asaro, Virginia Department of Forestry
Charlottesville, VA 22903
|Monica Blackman, Bureau of Indian Affairs
Harlem, MT 59526
|Kevin J. Dodds, USDA Forest Service
Durham, NH 03824
|Andris Eglitis, USDA Forest Service
Deschutes National Forest
Bend, OR 97702
|Monica Gaylord, Northern Arizona University
Flagstaff, AZ 86011
|Donald J. Goheen, USDA Forest Service
SW OR Forest Insect and Disease Service Center
Central Point, OR 97502
|Robert A. Haack, USDA Forest Service
Northern Research Station
East Lansing, MI 48823
|Bruce B. Hostetler, USDA Forest Service
Westside Forest Insect and Disease Service Center
Sandy, OR 97055
|Constance J. Mehmel, USDA Forest Service
Okanogan and Wenatchee National Forests
Wenatchee WA 98801
|Lee Pederson, USDA Forest Service
FHP-Coeur d'Alene Field Office
Coeur d'Alene, ID
|Ken Raffa and Aaron Adams
Department of Entomology, University of Wisconsin
Madison, WI 53706
|Danielle Reboletti, USDA Forest Service
Black Hills National Forest
Rapid City, SD 57702
Dept. of Ecosystem and Conservation Sciences,
College of Forestry and Conservation
University of Montana
Missoula, MT 59812
|Kjerstin R. Skov, USDA Forest Service
Ogden Field Office
Ogden, UT 84403
|Lia Spiegel, USDA Forest Service
Blue Mountains Pest Management Service Center
La Grande, Oregon 97850
|Jianghua Sun, Chinese Academy of Sciences
Institute of Zoology
Beijing, China 100080
A. Willhite, Mount Hood National Forest
Sandy, Oregon 97055
|Michael Wingfield and Lu Min
University of Pretoria, Pretoria, South Africa
|Dave Wood/Nadir Erbilgin
University of California, Berkeley, CA 94720
Status: We are conducting the first year of sampling across North America,
with 17 collaborators, primarily from USDA Forest Service Forest
staff. Fungal cultures have been made from 10 North American
and laboratory isolations are underway. Isolates will be sent
to South Africa
for DNA sequencing this summer.
Deliverables: Molecular and morphological characterization of species of Ophiostoma and related imperfect genera collected from D. valens across its native range in North America.
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Project ID: FY07TS37