Crown and root rot (left) on sticky monkey flower (Diplacus aurantiacus) compared with a control (right)
Photo Gallery
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P. tentaculata disease symptoms on sticky monkey flower  |
P. cryptogea sporangium  Obpyriform non-papillate sporangia in water |
P. pinifolia on Pinus radiata  Pinus radiata, note grey and collapsed needle bases |
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P. pinifolia on Pinus radiata  Pinus radiata, note Stem canker associated with necrotic needles. |
P. pseudotsugae colony morphology on PDA  P. pseudotsugae colony growth on PDA agar |
P. cactorum sporangia  P. cactorum sporangia |
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Basal canker on Port Orford Cedar stump  |
Phytophthora cactorum canker on beech tree  Canker on Fagus sp. caused by Phytophthora cactorum. |
P. cambivora bole canker  Fagus sylvatica bole canker |
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P. chlamydospora chlamydospore  Phytophthora chlamydospora chlamydospore in agar. Bar is 20 µm. |
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). |
Port Orford cedar seedlings  Raised beds for testing disease resistance of Port-Orford-cedar seedlings at the Dorena Genetic Resource Center |