Oospores of P. agathidicida 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
Photo Gallery
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P. agathidicida oospores  |
P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
P. austrocedrae colony morphology on Tomato juice agar with B sitosterol  Colony morphology of P. austrocedrae at 16 ºC after 4 weeks on Tomato juice agar with B sitosterol |
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P. cambivora inactive lesion on chinquapin  Inactive lesion of P. cambivora on chinquapin |
P. cryptogea colony morpholgy on V8  Colony morphology on V8 at 14 days |
P. pluvialis sporangium  Sporangium showing typical ovoid shape and semi-papillate condition |
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P. tentaculata disease symptoms on sticky monkey flower  Crown and root rot (left) on sticky monkey flower (Diplacus aurantiacus) compared with a control (right) |
P. nemorosa sporangium  Ovoid, semi-papillate sporangium showing medium length pedicel. |
P. siskiyouensis disease symptoms on Italian alder  Phytophthora collar rot on Italian alder trees: standing, dead tree |
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P. agathidicida sporangium  Globose to ovoid-ellipsoid, papillate sporangium |
P. pseudotsugae amphigynous oogonium  P. pseudotsugae oogonium with amphigynous antheridia |
Dying Port Orford Cedar trees  |