Insecticidal activity, toxicity and biochemical alterations of Drimys brasiliensis essential oil against Spodoptera frugiperda

IF 4.3 1区 农林科学 Q1 ENTOMOLOGY
Greissi Tente Giraldi, Wanderlei do Amaral, Rubens Candido Zimmermann, Edson José Mazarotto, Ana Marta Schafaschek, Alisson Esser Gerber, Beatriz Helena L. N. Sales Maia, Elaine Fernanda dos Santos, Mario Antônio Navarro da Silva, Luis Amilton Foester
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Abstract

Spodoptera frugiperda is a major pest in corn crops, causing significant productivity losses and exhibiting high resistance to synthetic insecticides. Essential oils (EOs) are natural substances known for their insecticidal activity against various agricultural pests. This study describes the chemical composition and bioactivity of Drimys brasiliensis EO against S. frugiperda larvae. The EO was extracted using the steam distillation method in a vat, and its chemical composition was determined using gas chromatography coupled with mass spectrometry (GC–MS). The insecticidal activity of this EO was assessed by the contact method to estimate the lethal concentration (LC50 and LC90) and to evaluate the effects on biochemical markers, including glutathione S-transferase (GST), esterase-α (EST-α), esterase-β (EST-β), superoxide dismutase (SOD), acetylcholinesterase (AChE) and lipid peroxidation (LPO), in 3rd instar larvae of S. frugiperda. Twenty-nine compounds were identified by GC–MS, accounting for 81.32% of the total chemical composition D. brasiliensis EO resulted in 100% mortality of S. frugiperda larvae at a concentration of 2.5%, with LC50 and LC90 values of 0.90 and 1.40%, respectively. Both lethal concentrations increased AChE and LPO activity, while only LC90 affected the EST-α and EST-β enzymes. Drimys brasiliensis EO exhibits insecticidal activity against S. frugiperda with neurotoxic effects, as well as cellular damage, demonstrating its potential as a control method in managing this pest in conventional and organic production methods.

Abstract Image

Drimys brasiliensis 精油对蚜虫的杀虫活性、毒性和生化变化
食蚜蝇(Spodoptera frugiperda)是玉米作物中的一种主要害虫,会造成严重的生产力损失,而且对合成杀虫剂具有很强的抗药性。精油(EO)是一种天然物质,以其对各种农业害虫的杀虫活性而闻名。本研究描述了巴西翠菊精油(Drimys brasiliensis EO)的化学成分和生物活性。该环氧乙烷是在大桶中采用蒸汽蒸馏法提取的,其化学成分采用气相色谱-质谱法(GC-MS)测定。采用接触法评估了该环氧乙烷的杀虫活性,以估算致死浓度(LC50 和 LC90),并评估了其对弗氏蝰3龄幼虫体内谷胱甘肽S-转移酶(GST)、酯酶-α(EST-α)、酯酶-β(EST-β)、超氧化物歧化酶(SOD)、乙酰胆碱酯酶(AChE)和脂质过氧化物(LPO)等生化指标的影响。通过气相色谱-质谱(GC-MS)鉴定出 29 种化合物,占总化学成分的 81.32% 巴西菩提树环氧乙烷在浓度为 2.5%时可导致 S. frugiperda 幼虫 100%死亡,其 LC50 和 LC90 值分别为 0.90% 和 1.40%。两种致死浓度都会增加 AChE 和 LPO 的活性,而只有 LC90 会影响 EST-α 和 EST-β 酶。Drimys brasiliensis环氧乙烷具有杀虫活性和神经毒性作用,并能破坏细胞,这表明它有潜力作为一种控制方法,在常规和有机生产方法中控制这种害虫。
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来源期刊
Journal of Pest Science
Journal of Pest Science 生物-昆虫学
CiteScore
10.40
自引率
8.30%
发文量
114
审稿时长
6-12 weeks
期刊介绍: Journal of Pest Science publishes high-quality papers on all aspects of pest science in agriculture, horticulture (including viticulture), forestry, urban pests, and stored products research, including health and safety issues. Journal of Pest Science reports on advances in control of pests and animal vectors of diseases, the biology, ethology and ecology of pests and their antagonists, and the use of other beneficial organisms in pest control. The journal covers all noxious or damaging groups of animals, including arthropods, nematodes, molluscs, and vertebrates. Journal of Pest Science devotes special attention to emerging and innovative pest control strategies, including the side effects of such approaches on non-target organisms, for example natural enemies and pollinators, and the implementation of these strategies in integrated pest management. Journal of Pest Science also publishes papers on the management of agro- and forest ecosystems where this is relevant to pest control. Papers on important methodological developments relevant for pest control will be considered as well.
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