Keywords: بوته استروبی; Interior spruce; Lodgepole pine; Picea glauca x engelmannii; Pinus contorta; Pinaceae; Coniferales; Pissodes strobi; White pine weevil; Grossmannia clavigera; Leptographium abietinum; Dendroctonus ponderosae; Mountain pine beetle; Chitinases; Conifer defe