University of Reggio Calabria, Dipartimento di AGRARIA, Loc. Feo di Vito, 89122, Reggio Calabria, Italy.
University of Catania, Department of Agriculture, Food and Environment, via Santa Sofia 100, 95123, Catania, Italy.
Sci Rep. 2017 Oct 12;7(1):13036. doi: 10.1038/s41598-017-13413-0.
The repeated use of conventional synthetic pesticides in crop protection leads to resistance development by pests along with a negative impact on the environment, particularly non-target arthropods. Plant-derived active compounds, such as essential oils (EOs), play a key role in sustainably controlling pests. The lethal and sublethal activity of citrus peel EOs as emulsions and included in polyethylene glycol (PEG) nanoparticles (EO-NPs) was determined against the invasive tomato pest Tuta absoluta. Their effects on the plants were also assessed. The results showed an overall good insecticidal activity of the compounds tested, with a higher mortality through contact on eggs and larvae by EO emulsions and through ingestion on larvae by EO-NPs. The nanoformulation also significantly reduced the visible toxic effects on the plants. The data collected suggest that these natural compounds, especially when nanoformulated, could be successfully used in integrated pest management programs for T. absoluta.
在作物保护中反复使用常规合成农药会导致害虫产生抗药性，同时对环境（特别是非靶标节肢动物）产生负面影响。植物源活性化合物，如精油（EOs），在可持续控制害虫方面发挥着关键作用。本文以入侵性番茄害虫烟粉虱为研究对象，确定了作为乳化剂的柑橘皮 EOs 以及包含在聚乙二醇（PEG）纳米颗粒（EO-NPs）中的柑橘皮 EOs 的致死和亚致死活性，并评估了它们对植物的影响。结果表明，所测试的化合物具有整体良好的杀虫活性，通过接触处理卵和幼虫时，EO 乳液的死亡率更高，通过摄取处理幼虫时，EO-NPs 的死亡率更高。纳米制剂还显著降低了对植物的可见毒性作用。收集的数据表明，这些天然化合物，特别是纳米制剂，可以成功地用于烟粉虱综合管理计划。
