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配制成乳油的树脂提取物对植物病原真菌的防治效果。

efficacy of resin extracts formulated as an emulsifiable concentrate against and phytopathogenic fungi.

作者信息

Gnedy Mai M A, Hussien Rania A A, Sleem Rasha A, Elkelish Amr, AlHarbi Maha, Alharbi Basmah M, Sayed Ali A S

机构信息

Pesticide Formulation Research Department, Central Agricultural Pesticides Lab (CAPL), Agricultural Research Center (ARC), Giza 11835, Egypt.

Fungicides, Bactericides and Nematicides Department, Central Agricultural Pesticides Lab (CAPL), Agricultural Research Center (ARC), Giza 11835, Egypt.

出版信息

Saudi J Biol Sci. 2023 Dec;30(12):103843. doi: 10.1016/j.sjbs.2023.103843. Epub 2023 Oct 20.

Abstract

Contemporary agriculture heavily relies on pesticides for pest eradication and disease management. Consequently, current study was carried out to assess the acaricidal/antifungal efficacy of emulsifiable concentrate (10 % EC) derived from () against adult females of (), and five fungal pathogens. The meticulous examination of the chemical constitution of the crude extracts derived from the resin of was conducted through the employment of the venerable technique known as Gas-Liquid Chromatography (GLC). The formulated petroleum-ether extract (FPEE) and formulated ethyl-acetate extract (FEAE) of at a concentration of 10 mg ml exhibited notable antioxidant activity with rates of 62.0 % and 90.8 %, respectively. , the FEAE exhibited potent inhibition against all the tested phytopathogenic fungi at different concentrations, whereas FPEE showed comparatively less efficacy. Interestingly, at 4000 ppm concentration, FEAE completely ceased the mycelial growth compared with the control. Moreover, following a span of 72 h of intervention, FPEE exhibited a greater degree of toxicity towards mature females of the urticae. This was evidenced by the LC value of 422.52 parts per million (ppm) for FPEE, which surpassed the LC value of 539.50 ppm observed for FEAE. In summary, the present study indicates that resin formulated as an emulsifiable concentrate (10 % EC) can offer a natural and effective alternative for integrated pest management, thereby reducing reliance on synthetic pesticides and offering a more environmentally sustainable strategy for pest control.

摘要

当代农业严重依赖农药来消灭害虫和管理病害。因此,开展了本研究,以评估从()提取的乳油(10% EC)对()成年雌螨以及五种真菌病原体的杀螨/抗真菌功效。通过采用气相色谱法(GLC)这一古老技术,对从()树脂中提取的粗提物的化学成分进行了细致分析。浓度为10毫克/毫升的()配方石油醚提取物(FPEE)和配方乙酸乙酯提取物(FEAE)分别具有62.0%和90.8%的显著抗氧化活性。此外,FEAE在不同浓度下对所有测试的植物病原真菌均表现出强效抑制作用,而FPEE的功效相对较低。有趣的是,在4000 ppm浓度下,与对照相比,FEAE完全抑制了菌丝体生长。此外,经过72小时的干预后,FPEE对()成年雌螨表现出更高的毒性。这一点通过FPEE的LC值为百万分之422.52(ppm)得到证明,该值超过了FEAE观察到的539.50 ppm的LC值。总之,本研究表明,配制成乳油(10% EC)的()树脂可为综合虫害管理提供一种天然且有效的替代方案,从而减少对合成农药的依赖,并为害虫防治提供更具环境可持续性的策略。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d37/10651685/27b0c9624c48/gr1.jpg

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