Close-up of margin area of bole lesions under the bark of a bleeding canker
Photo Gallery
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P. siskiyouensis bleeding canker  |
P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |
P. kernoviae canker  Bole lesion on Fagus sylvatica |
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Phytophthora cactorum disease symptoms on English walnut  Dieback of Juglans regia caused by Phytophthora cactorum |
P. cinnamomi hyphal swellings  P. cinnamomi hyphal swellings (or thin walled chlamydospores) |
P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
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P. ramorum canker  Bark discoloration and zone lines in coast live oak (Quercus agrifolia) |
P. agathidicida oospores in planta  Oospores in the roots of kauri seedlings inoculated with P. agathidicida. The root has been cleared with potassium hydroxide and bleached with peroxide before being stained with trypan blue (scale bar =100 µm). |
P. pinifolia on Pinus radiata  Pinus radiata stand, note Defoliation and regrowth |
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P. tentaculata hyphae  Looping hyphae commonly seen with P. tentaculata on PARP media |
P. ramorum colony morphology on V8  P. ramorum colony morphology on V8 |
P. arenaria sporangia  Globose papillate sporangia of Phytophthora arenaria on V8 agar flooded with soil extract. (Scale bar = 20 μm) |