A Pinus radiata needle showing black resinous bands or marks consistent with the presence of red needle cast disease.
Photo Gallery
P. pluvialis on Pinus radiata |
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. |
P. pluvialis hyphal swellings P. pluvialis hyphal swellings in water |
P. pluvialis colony morphology on carrot agar Colony morphology on carrot agar at 20 days |
P. pluvialis sporangia. P. pluvialis sporangia on tape peel from infected Douglas-fir needle. |
P. pluvialis hyphal swellings P. pluvialis hyphal swellings on agar |
P. pluvialis oogonium and antheridium Oogonium and oospore with amphigynous antheridium |
P. pluvialis on Pinus radiata in New Zealand A stand of Pinus radiata trees affected by red needle cast disease. Note that frequently only the lower part of the crown is affected. |
P. pluvialis on Pinus radiata in New Zealand A stand of Pinus radiata trees affected by red needle cast disease. Note the reddish appearance of affected trees prior to needle drop. |
P. pluvialis symptoms on Douglas-fir Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
P. pluvialis oogonium and antheridium Oogonium and oospore with amphigynous antheridium |
P. pluvialis symptoms on Douglas-fir P. pluvialis symptoms of red needle cast on Douglas-fir, western Oregon 2015 |