Phytophthora collar rot on Italian alder trees: an isolated bleeding canker on the trunk
Photo Gallery
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P. siskiyouensis canker on Italian alder  |
P. katsurae growth morphology on β-CMA  Growth morphology at 7 days on β-CMA |
P. ramorum sporangia and chlamydospores  Sporangia and chlamydospores of P. ramorum |
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P. agathidicia oogonia  P. agathidicida oogonia with SEM (top) and light microscopy (bottom) |
P. cactorum oogonium  Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic. |
P. cryptogea sporangium  Obpyriform non-papillate sporangia in water |
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P. siskiyouensis oogonium with paragynous antheridium  P. siskiyouensis oogonium with paragynous antheridium |
P. cinnamomi on Jarrah  Dieback in Jarrah, Western Australia |
P. pluvialis symptoms on Douglas-fir needles  Symptoms of red needle cast on Douglas-fir needles |
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P. chlamydospora sporangium  Phytophthora chlamydospora sporangium in water. Bar is 20µm. |
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). |
P. lateralis on Port Orford cedar  Collar lesion on Chaemacyparis lawsoniana in Landrévarzec, France |