Red needle cast symptoms on Douglas-fir in western Oregon, 2015
Photo Gallery
P. pluvialis symptoms on Douglas-fir |
P. alni basal canker on European Alder P. alni basal canker on European Alder (Alnus glutinosa) |
P. pluvialis on Pinus radiata needle Clusters of sporangia emerge from stomata of an infected radiata pine needle. |
P. cactorum oogonium Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic. |
P. katsurae oogonia Oogonia with ornamentation |
P. cambivora older hyphae Old septate hyphae |
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. kernoviae sporangium Papillate and caducous sporangium, photo from Q-bank, used with permission |
P. chlamydospora chlamydospore Phytophthora chlamydospora chlamydospore in agar. Bar is 20µm. |
P. pinifolia on Pinus radiata Pinus radiata, note grey and collapsed needle bases |
P. cinnamomi cork oak decline Cork oak decline, Portugal |
P. nicotianae colony morphology on PDA Phytophthora nicotianae CBS 321.49 PDA after 7 days at 24 degrees. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |