March 2, 2021
Testing for Sudden Oak Death
- Culturing on Selective Media
The traditional method for identifying
is to isolate and grow them on Petri plates containing a selective growth media.
Microscopic organisms are isolated from infected soil or plant tissue and sterile cultured on to Petri plates containing PARP agar.
After 5 to 7 days the plates are examined under a microscope for the presence of the distinctive spores of
Pros and Cons of the culturing method:
- Only relatively low tech equipment required.
- Culturing techniques are relatively easy to learn.
- Relatively low cost (although PARP media is expensive).
- State and Federal permits required to keep live
- Cultures from infected material do not always grow on agar media.
- May provide false negative results.
Jump to Other SOD Diagnostic Methods:
The UC Berkeley Forest Pathology and Mycology Laboratory does not provide a SOD testing service. For information on SOD testing please visit
This activity possible thanks to funding from:
USDA Forest Service, State and Private Forestry
The Gordon and Betty Moore Foundation
Agdia, Inc. http://www.agdia.com
Disclaimer: Mention of any company, trade name, or commercial product does not constitute endorsement by the University of California or recommendation for use.
Please report any problems to the
Lexis Nexis Search