P. ramorum colony morphology on PDA
Photo Gallery
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P. ramorum colony morphology on PDA  |
P. chlamydospora chlamydospore  Phytophthora chlamydospora chlamydospore in agar. Bar is 20µm. |
P. frigida chlamydospore  Globose chlamydospores of P. frigida |
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Phytophthora cactorum disease symptoms on English walnut  Dieback of Juglans regia caused by Phytophthora cactorum |
P. pinifolia on Pinus radiata  Pinus radiata needles, note “black line” symptom near needle bases |
P. frigida symptoms 1  Symptoms of gummosis on black wattle |
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P. cambivora sporangia  Empty sporangia of P. cambivora showing nested internal proliferation |
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. nemorosa sporangia  Ovoid, semi-papillate sporangia showing sympodial development of sporangiophore |
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P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. siskiyouensis sporangium  P. siskiyouensis sporangium with lateral semi-papilla and subterminal, sub-basal insertion in the sporangiophore |
P. nicotianae colony morphology on PDA  Phytophthora nicotianae CBS 321.49 PDA after 7 days at 24 degrees. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |