Bole lesions in the tissues under the bark of a bleeding canker: distinct margin between healthy and disease tissues
Photo Gallery
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P. siskiyouensis canker on Italian alder  |
P. frigida sporangia  Noncaducous sporangia showing ovoid shape and papillate condition |
P. lateralis on Port Orford cedar  Lesion caused by aerial infection on Chaemacyparis lawsoniana in Lopérec, France |
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P. pinifolia hyphal swellings  Spherical hyphal swelling with radiating hyphae (from Duran et al. 2008). Scale bar = 20 μm. |
P. ramorum sporangium  Deciduous sporangium, photo from Q-bank, used with permission |
P. pseudosyringae colony morphology on PDA  Colony morphology on PDA at 14 days |
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P. boehmeriae oogonium  Oogonia and oospores with amphigynous antheridia |
P. chlamydospora sporangium  Phytophthora chlamydospora sporangia in water, showing subsporangial elongation. Bar is 20 µm. |
Dead and healthy Port-Orford cedar seedlings  Port-Orford-cedar seedlings planted to test for Phytophthora lateralis resistance at the Dorena Genetic Resource Center |
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P. pinifolia on Pinus radiata  Dead needles on lower side of P. radiata branch. |
P. siskiyouensis canker on Italian alder  Phytophthora collar rot on Italian alder trees: an isolated bleeding canker on the trunk |
P. pinifolia hyphal growth  P. pinifolia pathogen growing from infected needle on selective agar |