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The Pathogenicity Of Blue-Stain Fungi On Lodgepole Pines Attacked By Mountain Pine Beetle, Richard Grant Ballard
The Pathogenicity Of Blue-Stain Fungi On Lodgepole Pines Attacked By Mountain Pine Beetle, Richard Grant Ballard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In the western regions of North America, mountain pine beetle, Dendroctonus ponderosae Hopk., infestations take a tremendous toll of pines , especially lodgepole pine, Pinus contorta Dougl. var. latifolia Engelm.. Mass attack by the beetles is a devastating event for the trees. As well as girdling the tree, a massive inoculation of blue stain fungus "complex" (composed of several species of Ceratocystis, numerous yeasts and other mycelial fungi) is made beneath the bark. These fungi colonize and destroy the parenchyma tissue system of the host sapwood, primarily the ray parenchyma and resin duct epithelium.
A blue stain is produced …