Emerick Jay J, Snyder Aaron I, Bower Nathan W, Snyder Marc A
Department of Chemistry and Biochemistry, Colorado College, Colorado Springs, CO 80903, USA.
Environ Entomol. 2008 Aug;37(4):871-5. doi: 10.1603/0046-225x(2008)37[871:mpbaaw]2.0.co;2.
Mountain pine beetle (Dendroctonus ponderosae) is the most important insect pest in southern Rocky Mountain ponderosa pine (Pinus ponderosa) forests. Tree mortality is hastened by the various fungal pathogens that are symbiotic with the beetles. The phenylpropanoid 4-allylanisole is an antifungal and semiochemical for some pine beetle species. We analyzed 4-allylanisole and monoterpene profiles in the xylem oleoresin from a total of 107 trees at six sites from two chemotypes of ponderosa pine found in Colorado and New Mexico using gas chromatography-mass spectroscopy (GC-MS). Although monoterpene profiles were essentially the same in attacked and nonattacked trees, significantly lower levels of 4-allylanisole were found in attacked trees compared with trees that showed no evidence of attack for both chemotypes.
山地松甲虫（Dendroctonus ponderosae）是落基山脉南部黄松（Pinus ponderosa）森林中最重要的害虫。与甲虫共生的各种真菌病原体加速了树木的死亡。苯丙烷类化合物4-烯丙基苯甲醚对某些松甲虫种类具有抗真菌作用和作为信息素。我们使用气相色谱 - 质谱联用仪（GC-MS）分析了来自科罗拉多州和新墨西哥州发现的两种化学型黄松六个地点共107棵树的木质部油脂中4-烯丙基苯甲醚和单萜类化合物的谱图。尽管在受攻击和未受攻击的树木中，单萜类化合物谱图基本相同，但对于两种化学型，受攻击树木中4-烯丙基苯甲醚的含量明显低于未显示攻击迹象的树木。
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