P. nicotianae oogonia 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands)
Photo Gallery
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P. nicotianae oogonia  |
P. austrocedrae - necrotic lesion in phloem  |
P. pseudotsugae colony morphology on V8  P. pseudotsugae colony growth on V8 agar |
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P. pluvialis symptoms on Douglas-fir  Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. pinifolia colony morphology on V8  Colony pattern after 7 days on V8 at 24C, photo from Q-bank, used with permission |
P. cactorum bleeding canker  Bleeding canker on red oak (Quercus rubra) |
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P. kernoviae leaf wilt  Wilted leaf of infected rhododendron |
P. cinnamomi colony morphology on V8  P. cinnamomi colony growth on V8 at 14 days |
P. lateralis sporangia  Sympodial sporangiophore with external proliferation |
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P. ramorum zoospores  Sporangium of P. ramorum releasing zoospores |
P. pluvialis sporangium  Sporangium showing typical ovoid shape and semi-papillate condition |
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). |