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.
Photo Gallery
P. pluvialis on Pinus radiata in New Zealand |
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 Symptoms of red needle cast on Douglas-fir needles |
P. pluvialis on Pinus radiata in New Zealand Pinus radiata needles showing colour changes following infection with red needle cast disease. The tissues around the initial infection at the base or along the needle senesce, and change yellow and then brown as indicated by the arrows before the needles cast. |
P. pluvialis on Pinus radiata needle Clusters of sporangia emerge from stomata of an infected radiata pine needle. |
P. pluvialis - appearance of new growth Tufted appearance of new growth from surviving buds on Douglas-fir, one year after defoliation. |
P. pluvialis colony morphology on carrot agar Colony morphology on carrot agar at 20 days |
P. pluvialis hyphal swellings P. pluvialis hyphal swellings on agar |
P. pluvialis sporangium Sporangia showing typical ovoid shape and semi-papillate condition |
P. pluvialis sporangia. P. pluvialis sporangia on tape peel from infected Douglas-fir needle. |
P. pluvialis symptoms on Douglas-fir Red needle cast symptoms on Douglas-fir in western Oregon, 2015 |