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)
Photo Gallery
|
P. nicotianae colony morphology on PDA  |
P. alni symptoms on European Alder  Mature, riparian common alder (A. glutinosa) stand heavily impacted by root and collar rot caused by P. alni |
P. cambivora on dead and dying chinquapin  Dead and dying chinquapin infected with P. cambivora |
|
P. frigida sporangia  Noncaducous sporangia showing ovoid shape and papillate condition |
P. pluvialis on Pinus radiata in New Zealand  Pinus radiata needles showing colour changes following infection with red needle cast disease. The tissues around the initial infection at the base or along the needle senesce, and change yellow and then brown as indicated by the arrows before the needles cast. |
P. pinifolia on Pinus radiata  Pinus radiata, note Stem canker associated with necrotic needles. |
|
P. pinifolia on Pinus radiata  Pinus radiata needles, note “black line” symptom near needle bases |
P. boehmeriae sporangium  Sporangium showing ovoid and ovoid to spherical shape and papillate condition |
P. siskiyouensis bleeding canker  Close-up of margin area of bole lesions under the bark of a bleeding canker |
|
P. austrocedrae - Mal del ciprés, stages of decline  Colony morphology of P. austrocedrae at 16 C after four weeks on PDA |
P. megasperma oogonium  Oogonium with paragynous antheridia applied close to the ogonial stalk. |
P. kernoviae sporangium  Papillate and caducous sporangium, photo from Q-bank, used with permission |