Colony morphology on carrot agar at 20 days
Photo Gallery
P. pluvialis colony morphology on carrot agar |
P. pluvialis symptoms on Douglas-fir Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |
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 - appearance of new growth Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation. |
P. pluvialis on Pinus radiata needle Clusters of sporangia emerge from stomata of an infected radiata pine needle. |
P. pluvialis symptoms on Douglas-fir needles Symptoms of red needle cast on Douglas-fir needles |
P. pluvialis on Pinus radiata A Pinus radiata needle showing black resinous bands or marks consistent with the presence of red needle cast disease. |
P. pluvialis symptoms Symptoms of red needle cast on Douglas-fir needles |
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 oogonium and antheridium Oogonium and oospore with amphigynous antheridium |
P. pluvialis sporangium Sporangium showing typical ovoid shape and semi-papillate condition |
P. pluvialis on Pinus radiata in New Zealand A Pinus radiata needle showing faded olive- or khaki- coloured lesions consistent with the presence of red needle cast disease. Arrow shows resinous bands within the extended olive lesion. |