Mature, riparian common alder (A. glutinosa) stand heavily impacted by root and collar rot caused by P. alni
Photo Gallery
|
P. alni symptoms on European Alder  |
P. agathidicida oospores  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 |
P. cambivora colony morphology on MA  Uniform fluffy colony morphology at 14 days at 20°C on MA |
|
P. cryptogea sporangium  Ovoid non-papillate sporangia in water. |
P. frigida oogonium  Oogonium and oospore with amphigynous antheridium |
P. tentaculata sporangium  Papillate sporangium of P. tentaculata with an elongated neck or beak. |
|
P. cambivora oogonium  P. cambivora oogonium with antheridium |
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. pluvialis symptoms on Douglas-fir  P. pluvialis symptoms of red needle cast on Douglas-fir, western Oregon 2015 |
|
P. alni oogonia  Smooth-walled oogonium of P. alni (Swedish variant) with oospore and amphigynous antheridium. |
P. tentaculata oogonia and antheridia  Oospores and oogonia with mostly paragynous but some amphigynous antheridia of P. tentaculata |
Basal canker on Port-Orford cedar  Basal canker on Chamaecyparis lawsoniana |