Nursery grown California mugwort plant (Artemisia douglasiana) infected with P. tentaculata and exhibiting severe root and crown rot
Photo Gallery
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P. tentaculata disease symptoms on California mugwort  |
P. pseudotsugae amphigynous oogonium  P. pseudotsugae oogonium with amphigynous antheridia |
Comparative gametangial morphology of Phytophthora Clade 5 species  Comparative gametangial morphology of Phytophthora Clade 5 species, with SEM (top) and light microscopy (bottom). P. heveae has smooth walled oogonia with funnel-shaped, amphigynous antheridia. P. agathidicida has mildly stipulate oogonia with globose amphigynous antheridia. P.cocois has mildly bullate oogonia with reflexed amphigynous antheridia. P. castaneae has coarsely bullate oogonium with rugose protuberances and narrow amphigynous antheridia (Weir et al. 2015). |
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P. cinnamomi cork oak decline  Red oak with embedded lesions, France |
P. austrocedrae - Mal del ciprés, stages of decline  Mal del ciprés, stages of decline |
P. arenaria sporangia  Globose papillate sporangia of Phytophthora arenaria on V8 agar flooded with soil extract. (Scale bar = 20 μm) |
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P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
P. chlamydospora sporangium  Phytophthora chlamydospora sporangia in water, showing subsporangial elongation. Bar is 20 µm. |
P. pinifolia on Pinus radiata  Dead needles on lower side of P. radiata branch. |
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P. cambivora colony morphology on MA  Appressed stellate colony morphology at 14 days at 20°C on MA |
P. boehmeriae symptoms  Symptoms of gummosis on black wattle (Acacia mearnsii) |
P. ramorum sporangia  P. ramorum sporangia |