A stand of Pinus radiata trees affected by red needle cast disease. Note the reddish appearance of affected trees prior to needle drop.
Photo Gallery
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P. pluvialis on Pinus radiata in New Zealand  |
P. tentaculata disease symptoms on California mugwort  Nursery grown California mugwort plant (Artemisia douglasiana) infected with P. tentaculata and exhibiting severe root and crown rot |
Necrotic lesion in phloem caused by P. austrocedrae  Necrotic lesion in phloem with resin pocket caused by P. austrocedrae |
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P. agathidicia oogonia  Light micrograph of P. agathidicida oospore (Scale bar equals 15 µm) |
P. lateralis on Port Orford cedar  Atypical decline caused by aerial infections in Scaër, France |
P. pluvialis on Pinus radiata in New Zealand  Lesions consistent with the presence of red needle cast disease are more abundant at the base of Pinus radiata needles as indicated by the arrow. |
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P. cinnamomi on Banksia  Dead and dying Banksia, Western Australia |
P. kernoviae leaf wilt  Necrosis of rhododendron leaves. |
P. cactorum sporangia  Broadly ovoid, papillate sporangia in water. |
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P. pseudosyringae sporangium  Ovoid, semipapillate sporangia showing medium length pedicel |
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). |
P. nicotianae symptoms 2  Symptoms of gummosis on black wattle (Fitopatol. bras. 2005) |