Symptoms of red needle cast on Douglas-fir needles
Photo Gallery
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P. pluvialis symptoms on Douglas-fir needles  |
P. pluvialis - appearance of new growth  Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation. |
P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
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P. pluvialis hyphal swellings  P. pluvialis hyphal swellings on agar |
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 |
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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 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 symptoms  Symptoms of red needle cast on Douglas-fir needles |
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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. |
P. pluvialis sporangium  Sporangia showing typical ovoid shape and semi-papillate condition |
P. pluvialis colony morphology on carrot agar  Colony morphology on carrot agar at 20 days |