Phytophthora oak decline; Root rot - Phytophthora quercina
Effective: August 18, 2010
Taxonomic Position: Peronosporales : Pythiaceae
Pest Type: Fungi
This pest is a member of the following lists:

List 2017 2018 2019
Oak reference reference reference
This datasheet represents an Approved Method for: 2015, 2016, 2017, 2018, 2019
Pest is vectored by:
Approved Method(s):
Survey Instruction Details:
Key Diagnostics
Approved Method(s):

Mistaken Identities:
In Progress / Literature-based Diagnostics:
  1. Gallegly, M.E., and Hong, C. 2008. Phytophthora: Identifying species by morphology and DNA fingerprints. The American Phytopathological Society. APS Press.
  2. Jung, T., Cooke, D.E.L., Blaschke, H., Duncan, J.M., and Osswald, W. 1999. Phytophthora quercina sp. nov., causing root rot of European oaks. Mycological Research 103(7): 785-798.
  3. Nechwatal, J., Schlenzig, A., Jung, T., Cooke, D.E.L., Duncan, J.M., and Osswald, W.F. 2001. A combination of baiting and PCR techniques for the detection of Phytophthora quercina and P. citricola in soil samples from oak stands. Forest Pathology 31: 85-97.
  4. Schena, L., Duncan, J.M., and Cooke, D.E.L. 2008. Development and application of a PCR-based 'molecular tool box' for the identification of Phytophthora species damaging forests and natural ecosystems. Plant Pathology 57: 64-75.
  5. Schena, L., Hughes, K.J.D., and Cooke, D.E.L. 2006. Detection and quantification of Phytophthora ramorum, P. kernoviae, P. citricola, and P. quercina in symptomatic leaves by multiplex real-time PCR.
  6. Schubert, R., Bahnweg, G., Nechwatal, J., Jung, T., Cooke, D.E.L., Duncan, J.M., Muller-Starck, G., Langebartels, C., Sandermann, H., Jr., and Osswald, W. 1999. Detection and quantification of Phytophthora species which are associated with root-rot diseases in European deciduous forests by species specific polymerase chain reaction. European Journal of Forest Pathology 29: 169-188.
  7. Schwingle, B.W., Juzwik, J., Eggers, J., and Moltzan, B. n.d. The American Phytopathological Society. May 2007. Phytophthora Species in Soils Associated with Declining and Nondeclining Oaks in Missouri Forests.