APS Forest Pathology Committee

May 2010                                                         Pre-Meeting information

Hello Forest Pathology Committee members,

The annual meeting of the American Phytopathological Society is approaching later this summer on August 7-11th in Charlotte, North Carolina. Several items I would like to make you aware of before the meeting;

1) Field Trip- August 7th - 8:00 -6:00 PM
2) Forest Pathology Committee meeting- August 8th 8:30-10:00AM
3) Special session this year- August 10, 1:00-3:00.

1) Nursery and Forest Pathology Field Trip

As far as I know, the field trip is still on for those of you who have signed up. I have asked Margaret Mmbaga to keep me posted on what is happening as they rearrange the tour specifics for the Charlotte area.

2) Items of the Forest Pathology Committee Meeting

We will be having our Forest Pathology Committee meeting on Sunday Morning August 8th at 8:30 - 10:00 AM.

Not surprisingly, most traffic has been for the meeting in Hawaii next year.
Several topics have been submitted for discussion:

Special sessions proposed for Annual APS meeting 2011:
a) Guava rust
b) Tropical Forest pathology

You can submit your special session topics directly to the APS website:
2011 Special Session Guidelines

Submit Your Session Idea Now

Other topics for discussion: Steve Oak has suggested that the issue of a common name for H. irregulare be addressed at APS. Additionally he suggested a larger discussion on how to deal with common names in general for forest pathogens.

Let me know of any other topics you wish to include for discussion at the Forest pathology meeting. You can send in topics whether you will be present or not to discuss them. I will send out a committee agenda before the meeting with all topics submitted.

3) Our special session at the meeting this year:
Tuesday, August 10, 2010 Afternoon (No break for the afternoon sessions.)

Restoring Forest Ecosystems Impacted by Invasive Pathogens
1:00 - 3:00 p.m.
Section: Plant Disease Management
Organizers: William L. MacDonald, West Virginia University, Morgantown, WV, U.S.A.; Pauline C. Spaine, USDA Forest Service, Athens, GA, U.S.A.
Moderator: Pauline C. Spaine, USDA Forest Service, Athens, GA, U.S.A.
Sponsoring Committee: Forest Pathology

Numerous North American forest ecosystems have been severely impacted by nonnative invasive pathogens. Although the long-term damage that has resulted is recalcitrant to recovery, progress is being made to restore some impacted ecosystems. Several examples of restorations that are ongoing will be presented.

1:00 p.m. 108-S. Can whitebark pine be saved? E. M. GOHEEN (1), J. Schwandt (2). (1) USDA Forest Service, Forest Health Protection, Central Point, OR, U.S.A.; (2) USDA Forest Service, Forest Health Protection, Couer de Alene, ID, U.S.A.

1:30 p.m. 109-S. Management of Port-Orford-cedar (Chamaecyparis lawsoniana) in the presence of the non-native pathogen Phytophthora lateralis. R. A. SNIEZKO (1), D. J. Goheen (2). (1) USDA Forest Service, Cottage Grove, OR, U.S.A.; (2) USDA Forest Service, Central Point, OR, U.S.A.

2:00 p.m. 110-S. Restoring a fallen giant?The American chestnut. W. L. MACDONALD (1), R. B. Mann (2). (1) West Virginia University, Morgantown, WV, U.S.A.; (2) The American Chestnut Foundation, Mount Sterling, KY, U.S.A.

2:30 p.m. 111-S. Sudden Oak Death and the future of California coastal forests. D. RIZZO (1), M. Garbelotto (2). (1) University of California, Davis, CA, U.S.A.; (2) University of California, Berkeley, CA, U.S.A.

In addition we have several co- sponsored sessions:

Edible and Medicinal Mushrooms: Diversity, Commercial Production, and Disease Management in High-Volume Production Facilities
Monday August 9th, 8:30-11:30 a.m., APS Sponsoring Committees: Mycology; Forest Pathology and Extension
This special session will provide an overview on the diversity of edible and medicinal mushrooms and on the state-of-the-art in the commercial production of gourmet and specialty fungi, highlighting the economic impact of this emerging agricultural product. Additional emphasis will be on modern disease management strategies employed in large-scale production facilities.

Refining Systematics (Taxonomy, Nomenclature, Phylogenetics) for Better Resolution in the Population Biology and Evolution of the Oomycetes
Tuesday August 10th, 8:30-11:30 a.m., APS Sponsoring Committees: Mycology; Forest Pathology
Although Phytophthora, Pythium, and the downy mildews are among the most studied organisms in systematics, there is still a great deal of confusion in recognizing valid species and new genera. Poorly annotated sequences exist in GenBank, making it impossible to identify some of the clusters for extypes or neotypes and consequently, the proper identity of an isolate. Examples of these complexes include Phytophthora capsici, Phytophthora citricola, Phytophthora drechsleri, Phytophthora megasperma, Pythium irregulare, prov. genus name Phytopythium vexans, and Py. helicoides. Although morphological and molecular characterization is used for describing new species, some have recently been found invalid. Establishing proper nomenclature provides a solid foundation for research tied to the species and for associated regulatory and disease control decisions. Experts in systematics, evolution, and population genetics will participate in this session, hopefully stimulating collaboration for addressing these major challenges in oomycete systematics.



Send in your items for discussion at the Forest Pathology Committee meeting.

Best Regards,


Pauline Spaine
USDA Forest Service
320 Green Street
Athens, Georgia 30602