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首页> 外文期刊>Journal of entomology >Effects of organic extracts of Bursera copallifera and B. lancifolia leaves in the development of Spodoptera frugiperda.
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Effects of organic extracts of Bursera copallifera and B. lancifolia leaves in the development of Spodoptera frugiperda.

机译：Bursera copallifera 和 B的有机提取物的作用。 lancifolia 留在了Spodoptera frugiperda 的发育中。

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The genus Bursera has worldwide presence, some of its representative species are distributed in Mexico, where are locally used as insecticides. Phytochemical studies of Bursera species have mentioned the presence of terpenoids, flavonoids and lignans. The plants extracts have been shown to possess a range of biological activities. Within the search of natural products with activity on insects, organic extracts (hexane, ethyl acetate and methanol) of Bursera copallifera and B. lancifolia leaves were tested for its effect on Spodoptera frugiperda development and acetylcholinesterase inhibitory activity. The extracts were analyzed by planar chromatography using reagents (anisaldehyde and natural products reagent) to detect specific groups of compounds. Neonate larvae of S. frugiperda were fed with insect diet mixed with extracts in a concentration of 1000 ppm. After seven days of the initial dosing, surviving larvae were weighed and its length measured. Administration of the hexane, ethyl acetate and methanol extracts from both species were correspondent with reduced larval weight and size. Insects treated with B. copallifera extracts were the most affected (73+or-0.005%, p<0.05 and 35+or-0.04% for weight and size reductions in ethyl acetate treatment). Acetylcholinesterase of S. frugiperda was inhibited in vitro to similar extent by methanol (IC50 367 micro g mL-1) and ethyl acetate extracts (IC50 397 micro g mL-1) from B. copallifera and B. lancifolia, respectively. Presence of terpenoids and flavonoids were confirmed after planar chromatography analysis. Results indicate that the extracts reduced larval growth and suggest that detected constituents may be partially responsible for the biological activity observed. Further studies on the physiological response when administered to insects and chemical characterization of the extracts are recommended.
机译：布鲁斯属（Bursera）遍布世界各地，其一些代表性物种分布在墨西哥，在当地被用作杀虫剂。植物气单胞菌的植物化学研究提到了类萜，类黄酮和木脂素的存在。植物提取物已显示具有多种生物活性。在寻找对昆虫有活性的天然产物的过程中， Bursera copallifera 和 B的有机提取物（己烷，乙酸乙酯和甲醇）。测试了lancifolia 叶片对草地夜蛾（Spodoptera frugiperda）发育和乙酰胆碱酯酶抑制活性的影响。通过使用试剂（茴香醛和天然产物试剂）的平面色谱法分析提取物，以检测化合物的特定组。 S的新生儿幼虫。用昆虫饮食和浓度为1000 ppm的提取物一起喂食frugiperda 。初次给药7天后，称量存活的幼虫并测量其长度。施用来自两种物种的己烷，乙酸乙酯和甲醇提取物对应于降低幼虫的重量和大小。用 B处理的昆虫。 copallifera提取物受到的影响最大（在乙酸乙酯处理中，重量和尺寸减小，减少了73％或-0.005％，p <0.05和35％或-0.04％）。 S的乙酰胆碱酯酶。甲醇（IC50 367 micro g mL-1）和来自 B的乙酸乙酯提取物（IC50 397 micro g mL-1）在体外对frugiperda的抑制程度相似。 copallifera 和 B。 lancifolia 。平面色谱分析后确认了萜类和黄酮类化合物的存在。结果表明，提取物减少了幼虫的生长，并表明检测到的成分可能部分负责观察到的生物活性。建议对昆虫给药时的生理反应和提取物的化学特性进行进一步研究。

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