Insecticidal activities of Salvia hispanica L. essential oil and combinations of their main compounds against the beet armyworm Spodoptera exigua
Insecticidal activities of Salvia hispanica L. essential oil and combinations of their main compounds against the beet armyworm Spodoptera exigua
复制标题
西班牙鼠尾草精油及其主要化合物组合对甜菜夜蛾的杀虫活性
DOI：
10.1016/j.indcrop.2021.113271
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发表时间：
2021-02-05
影响因子：
5.9
通讯作者：
Dai, Guanghui
中科院分区：
文献类型：
--
作者：
Chen, Yijuan;Luo, Jiaxuan;Dai, Guanghui
植物精油是开发天然昆虫防治剂的有力候选者。它们的化学成分沿着其生物活性往往受到多种因素的影响。然而，化合物的组成和生物活性之间的关系还没有很好地理解。在这项研究中，8种植物精油进行了筛选，并从最有效的油显示对甜菜夜蛾（Spodoptera exigua Hubner）的三龄幼虫杀虫特性的主要化合物进行了评价比较和协同作用的局部应用。结果表明，西鼠尾草具有较好的药用价值。挥发油具有显著的杀虫活性。与其他七种精油相比。从S.通过气相色谱-质谱法测定了西班牙侧柏中含量最高的化合物，其中含量最高的化合物（α-侧柏酮）具有最高的杀虫活性。本文报道了侧柏叶中四种主要化合物（α-崖柏酮、（+）-樟脑、1，8-桉叶素和α-香芹烯）的几种组合。Hispanica表现出协同杀虫活性。本研究表明了S. hispanica精油和α-侧柏酮作为有效的植物杀虫剂控制甜菜夜蛾，并提供了精油化合物与害虫的相互作用更好的理解。
Plant essential oils are the powerful candidates to develop natural insect management agents. Their chemical compounds along with their biological activity are often affected by many factors. However, the relationships between the composition and bioactivity of the compounds are not well understood. In this study, eight plant essential oils were screened, and the main compounds from the most effective oil showing insecticidal properties against third-instar larvae of the beet armyworm (Spodoptera exigua Hubner) were evaluated for comparative and synergistic interactions by topical application. The results indicated that Salvia hispanica L. essential oil showed significant insecticidal activity against S. exigua compared with the other seven essential oils. Fifteen major compounds were identified from S. hispanica via gas chromatography-mass spectrometry, with the most abundant compound (alpha-thujone) possessing the highest insecticidal activity. Several combinations of the four major compounds (alpha-thujone, (+)-camphor, 1,8-cineole, and alpha-caryophyllene) from S. hispanica exhibited synergistic insecticidal activities. This study demonstrates the potential of S. hispanica essential oil and alpha-thujone as effective botanical insecticides in the control of beet armyworm and provides a better understanding of essential oil compound-pest interactions.