Safety and Security Research Institute, Institute of Detection Technologies, Hochschule Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Straße 20, 53359, Rheinbach, Germany.
Sci Rep. 2020 Mar 23;10(1):5194. doi: 10.1038/s41598-020-61897-0.
Explorative experiments were done to figure out differences in the emission of volatile organic compounds (VOCs) of not infested trees and trees infested by Anoplophora glabripennis (Asian longhorn beetle, ALB), a quarantine pest. Therefore, VOCs from some native insect species, Anoplophora glabripennis infested Acer, stressed Acer, healthy Acer, Populus and Salix were obtained by enrichment on adsorbents. Qualitative analysis was done by thermal desorption gas chromatography coupled with a mass selective detector (TD-GC/MS). Altogether 169 substances were identified. 11 substances occur from ALB infested or mechanically damaged trees i.e. stressed trees, but not from healthy trees. (+)-Cyclosativene, (+)-α-longipinene, copaene and caryophyllene are detectable only from ALB-infested Acer not from mechanically damaged or healthy Acer. However, these substances are also emitted by healthy Salix. 2,4-Dimethyl-1-heptene is among all tree samples exclusively present in the ambience of ALB-infested trees. It´s rarely detectable from native insect species' samples.
进行了探索性实验，以找出未受侵害的树木和受亚洲长角天牛（检疫害虫）侵害的树木之间挥发性有机化合物（VOCs）排放的差异。因此，通过吸附剂富集获得了一些本地昆虫物种、受亚洲长角天牛侵害的槭树、胁迫的槭树、健康的槭树、杨树和柳树的 VOCs。通过热解吸气相色谱-质谱联用仪（TD-GC/MS）进行定性分析。共鉴定出 169 种物质。11 种物质仅存在于受亚洲长角天牛侵害或机械损伤的树木（胁迫树木）中，而不存在于健康树木中。然而，这些物质也存在于健康的柳树中。仅从受亚洲长角天牛侵害的槭树中可检测到（+）-环沙蒂烯、（+）-α-长叶烯、古巴烯和石竹烯，而从机械损伤或健康的槭树中则无法检测到。然而，这些物质也存在于健康的柳树中。2,4-二甲基-1-庚烯是所有树木样本中仅存在于受亚洲长角天牛侵害的树木环境中的物质。它很少从本地昆虫物种的样本中检测到。
