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Title: Incidence of Phytophthora ramorum, P. nemorosa and P. pseudosyringae in three coastal California forest communities

Author: Murphy, Shannon K.; Rizzo, David M.;

Date: 2006

Source: In: Frankel, Susan J.; Shea, Patrick J.; and Haverty, Michael I., tech. coords. Proceedings of the sudden oak death second science symposium: the state of our knowledge. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 69-71

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: Phytophthora ramorum is well established over approximately 450 km of forests along the California coast. In the course of research on this emerging pathogen, two other aerial species of Phytophthora, P. nemorosa and P. pseudosyringae, were discovered. Little is known about the ecology and biology of these other species and how they interact with P. ramorum. Preliminary research has found that P. nemorosa and P. pseudosyringae have similar host and geographic ranges and cause similar disease symptoms as P. ramorum. However, P. nemorosa and P. pseudosyringae do not appear to cause landscape level mortality of oaks (Quercus spp.) or tanoak (Lithocarpus densiflorus), as does P. ramorum. These three species are virtually indistinguishable in the field and can only be identified microscopically.

Keywords: ecology, forest community, Generalized Additive Models, plant pathogen, Phytophthora, sudden oak death

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Murphy, Shannon K.; Rizzo, David M. 2006. Incidence of Phytophthora ramorum, P. nemorosa and P. pseudosyringae in three coastal California forest communities. In: Frankel, Susan J.; Shea, Patrick J.; and Haverty, Michael I., tech. coords. Proceedings of the sudden oak death second science symposium: the state of our knowledge. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 69-71

 


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