Port-Orford-cedar seedlings planted to test for Phytophthora lateralis resistance at the Dorena Genetic Resource Center
Photo Gallery
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Dead and healthy Port-Orford cedar seedlings  |
P. tentaculata disease symptoms on California mugwort  Nursery grown California mugwort plant (Artemisia douglasiana) infected with P. tentaculata and exhibiting severe root and crown rot |
P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
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P. frigida symptoms 2  Symptoms of gummosis on black wattle |
P. tentaculata sporangium  Papillate sporangium of P. tentaculata |
P. cambivora colony morphology on MA  Appressed colony morphology at 14 days at 20°C on MA |
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P. cinnamomi hyphal swellings  P. cinnamomi hyphal swellings (or thin walled chlamydospores) |
P. agathidicia sporangia  Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
P. frigida symptoms 3  Black wattle bark with symptoms of gummosis |
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P. pinifolia on Pinus radiata  Pinus radiata, note Infected needles at right angles to stem |
P. alni basal canker on European Alder  P. alni basal canker on European Alder (Alnus glutinosa) |
P. pinifolia sporangium  Non- papillate and caducous sporangia of Phytophthora pinifolia isolated from the infected P. radiata needles. |