Rosaceous colony morphology at 14 days at 20°C on PDA
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P. cambivora colony morphology on PDA |
P. cactorum sporangia P. cactorum sporangia |
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). |
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Growth of P. arenaria on V8 Colony morphology of Phytophthora arenaria after 7 days at 20°C on V8 agar |
P. pluvialis symptoms Symptoms of red needle cast on Douglas-fir needles |
P. ramorum sporangium Deciduous sporangium, photo from Q-bank, used with permission |
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Boot wash to station to control spread of P. agathidicida Use of hypochlorite solution applied through a “livestock drench-gun”, integrated with a soil grate to allow potentially contaminated soil to be collected |
P. nemorosa colony morphology on V8 Colony morphology on V8 at 14 days |
P. tentaculata disease symptoms on sticky monkey flower Outplanted sticky monkey flower (Diplacus aurantiacus) infected with P. |
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P. cambivora sporangia Empty sporangia of P. cambivora showing nested internal proliferation |
P. cactorum bleeding canker Bleeding canker on European beech (Fagus sylvatica) |
P. austrocedrae - hyphal swellings Morphology of hyphae of Phytophthora austrocedrae, from Greslebin et al. 2007 |


