Sporangiophore showing internal proliferation through empty sporangia after zoospore release
Photo Gallery
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P. cryptogea sporangia  |
P. kernoviae oogonia  Oogonium with amphigynous antheridia, photo from Q-bank, used with permission |
P. siskiyouensis bleeding canker  Close-up of margin area of bole lesions under the bark of a bleeding canker |
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P. kernoviae sporangia  Mycol.Res 109, 853-859; Figs 18-22. Regular, ovoid limoniform sporangia. Figs 23-26. Asymmetrical or sporangia |
P. pinifolia on Pinus radiata needles  Pinus radiata needles, note “black line” symptom near needle bases |
P. cambivora disease symptoms  Collar canker rot of Ink disease on sweet chestnut |
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P. cambivora sporangium with sympodial proliferation  Empty sporagium showing sympodial proliferation |
P. cactorum sporangia  Broadly ovoid, papillate sporangia in water. |
P. pluvialis hyphal swellings  P. pluvialis hyphal swellings in water |
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P. pinifolia on Pinus radiata  Pinus radiata, note Infected needles at right angles to stem |
P. austrocedrae colony morphology on Tomato juice agar  Colony morphology of P. austrocedrae at 16 ºC after 4 weeks on Tomato juice agar |
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). |