Potent insecticidal activity of Eleocharis dulcis (Burm. f.) Trin peel extract and its main components against aphids
文献类型： 外文期刊
作者： Li, Jingjing 3 ; Kang, Zhanhai 3 ; Yu, Hualong 3 ; Feng, Yingjian 3 ; Zhang, Xinxin 3 ; Zhao, Yujing 3 ; Dong, Lili 3 ; Zhang, Lihui 3 ; Dong, Jingao 3 ; Li, Yaofa 2 ; Ma, Shujie 1 ;
作者机构： 1.Hebei Agr Univ, Coll Plant Protect, Baoding 071001, Peoples R China
2.Hebei Acad Agr & Forestry Sci, Plant Protect Inst, Baoding 07100, Peoples R China
3.Hebei Agr Univ, Coll Plant Protect, Baoding, Peoples R China
4.Hebei Acad Agr & Forestry Sci, Plant Protect Inst, Baoding, Peoples R China
关键词： Eleocharis dulcis peel; bioactivity-directed fractionation; 4-hydroxylonchocarpin; aphid; botanical insecticide
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.462； 五年影响因子：4.688 ）
ISSN： 1526-498X
年卷期：
页码：
收录情况： SCI
摘要： BackgroundAphids are significant pests of cash crops and food farm crops. Botanical insecticides are safe for aphid control, especially for organic farming. In this study, Eleocharis dulcis (Burm. f.) Trin. peel extract (EDPE), a new botanical insecticide, was investigated for its active compositions against several agricultural aphids. ResultsThe results showed that the EDPE had high insecticidal activity against Sitobion avenae Fabricius, Aphis gossypii Glover, Megoura crassicauda Mordvilko, and Acyrthosiphon pisum Harris, with half-lethal concentration (LC50) values of 95.92, 81.04, 140.31, and 255.73 mg/L after 48 h of treatment. In the pot culture assay, the aphicidal effects of 25% EDPE soluble liquid (SL) at a concentration of 0.016% were 68.98 +/- 5.61%, 79.33 +/- 8.27%, and 88.82 +/- 3.91% after the first, third, and seventh days of treatment, respectively. Nine compounds were identified by bioactivity-directed fractionation: 4',5'-dimethoxy-6,6-dimethylpyranoisoflavone (1), 3-methoxy-4-hydroxylonchocarpin (2), 4-hydroxylonchocarpin (3), 4-methoxylonchocarpin (4), barbigerone (5), lonchocarpusone (6), 6a,12a-dehydrodeguelin (7), 13-homo-13-oxa-6a, 12a-dehydrodeguelin (8) and deguelin (9). Among them, 4-hydroxylonchocarpin (3) showed the highest aphidicidal activity against M. crassicauda, S. avenae, and A. pisum, with LC50 values of 97.24, 140.63, and 112.31 mg/L, respectively. ConclusionThese data contribute to a better understanding of the aphicidal activity of EDPE and its main component, 4-hydroxylonchocarpin. This will help to develop new botanical insecticides to contro aphids. (c) 2022 Society of Chemical Industry.
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