Dothistroma needle blight

Dothistroma needle blight (DNB), also known as red band needle blight due to its characteristic symptoms, is one of the most serious needle diseases of pine. It is caused by either one of two haploid ascomycete fungi: Dothistroma septosporum (Doroguin) M. Morelet and Dothistroma pini Hulbary that are morphologically almost identical but phylogenetically distinct. The disease, mostly due to D. septosporum, is widespread where Pinus spp. are found, but its global notoriety has stemmed from the severe damage it caused in Southern Hemisphere pine plantations.