Mortality of Juglans regia caused by Phytophthora cactorum.
Photo Gallery
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Phytophthora cactorum disease symptoms on English walnut  |
P. lateralis on Port Orford Cedar  Horticultural planting of Port-Orford cedar, photo from USDA Forest Service, Dorena Genetic Resource Center |
P. pseudosyringae oogonium  Oogonium with paragynous antheridium in agar |
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P. chlamydospora chlamydospore  Phytophthora chlamydospora chlamydospore in agar. Bar is 20µm. |
P. pinifolia colony morphology on V8  Colony morphology of P. pinifolia at 20°C on V8 after 3 weeks. From Duran et al. 2008 |
P. siskiyouensis sporangia  Sporangia showing a variety of shapes and orientations of semi-papillae and sporangiophores |
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P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
P. kernoviae disease on beech  External lesion; 14 November 2003 |
P. siskiyouensis oogonium with amphigynous antheridium  P. siskiyouensis oogonium with amphigynous antheridium |
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P. cambivora on dead and dying chinquapin  Dead and dying chinquapin infected with P. cambivora |
P. cambivora sporangium  Ovoid non-papillate sporangia with well-rounded base and simple sporangiophore |
P. agathidicida oospores in planta  Oospores in the roots of kauri seedlings inoculated with P. agathidicida. The root has been cleared with potassium hydroxide and bleached with peroxide before being stained with trypan blue (scale bar =100 µm). |