P. pluvialis hyphal swellings in water
Photo Gallery
P. pluvialis hyphal swellings |
P. pluvialis on Pinus radiata in New Zealand Typical red needle cast symptoms along a twig. Lesions begin at the base of the needle which subsequently turns brown and is cast from the twig. |
P. pluvialis colony morphology on carrot agar Colony morphology on carrot agar at 20 days |
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 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 sporangium Sporangia showing typical ovoid shape and semi-papillate condition |
P. pluvialis - appearance of new growth Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation. |
P. pluvialis symptoms on Douglas-fir needles Symptoms of red needle cast on Douglas-fir needles |
P. pluvialis hyphal swellings P. pluvialis hyphal swellings on agar |
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 on Pinus radiata needle Clusters of sporangia emerge from stomata of an infected radiata pine needle. |