Insecticidal action, repellency, and toxicity mechanism of the essential oil of Lippia turbinata against the stored product pest Rhipibruchus picturatus (F.),Pesticide Biochemistry and Physiology

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Insecticidal action, repellency, and toxicity mechanism of the essential oil of Lippia turbinata against the stored product pest Rhipibruchus picturatus (F.)
Pesticide Biochemistry and Physiology ( IF 4.2 ) Pub Date : 2024-04-10 , DOI: 10.1016/j.pestbp.2024.105907
Valeria Tapia Mattar ₁ , José Luis Borioni ₂ , Axel Hollman ₃ , Sergio A Rodriguez ₁

Affiliation

The use of essential oils (EOs) in the development of alternative management methods for bruchid control under storage conditions aroused great interest because they have proven to be effective, less toxic, and less persistent in the ecosystem than synthetic pesticides. In this sense, leaves of (Griseb.) Moldenke EO were studied in the present work. The monoterpene limonene and the monoterpenoid eucalyptol were its main constituents. EO showed potent insecticidal activity both in contact and fumigant conditions, against (F.) which is one of the main pests of pods in stored conditions. Moreover, the EO produces repellency in these insects. Additionally, the toxicity mechanism of action was studied. In this regard, the EO inhibits the acetylcholinesterase enzyme in assays, alters the activity of the antioxidant enzymes superoxide dismutase and catalase, and produces an increase in the lipid peroxidation reactions. This is the first report of the use of L. EO against insect pest. The data obtained demonstrate its potential for developing more efficient and natural storage pest control strategies.

中文翻译：

唇形花精油对仓储害虫红斑纹蜱的杀虫作用、驱避及毒力机制

使用精油（EO）开发储存条件下控制豆象的替代管理方法引起了人们的极大兴趣，因为事实证明，与合成农药相比，精油更有效，毒性更小，并且在生态系统中的持久性更小。从这个意义上说，本工作对 (Griseb.) Moldenke EO 的叶子进行了研究。单萜柠檬烯和单萜桉树脑是其主要成分。 EO 在接触和熏蒸条件下对储存条件下豆荚的主要害虫之一（F.）显示出有效的杀虫活性。此外，EO 还能对这些昆虫产生驱避作用。此外，还研究了毒性作用机制。在这方面，EO 在测定中抑制乙酰胆碱酯酶，改变抗氧化酶超氧化物歧化酶和过氧化氢酶的活性，并增加脂质过氧化反应。这是利用L.EO防治害虫的第一份报告。获得的数据证明了其开发更有效和自然的仓储害虫控制策略的潜力。

更新日期：2024-04-10

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