Identification of a small molecular insecticidal toxin Philanthotoxin-7,4 in the predatory stink bug, Arma custos
文献类型： 外文期刊
作者： Li, Juntao 1 ; Du, Zhao 1 ; Yang, Xiang 2 ; Li, Wenhong 3 ; Wen, Mingxia 2 ; Wang, Xinyi 1 ; Gbeinbo, Fiderikumo Livingstone 1 ; Yang, Jingyi 1 ; Huang, Chunyang 2 ; He, Yueping 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Insect Resources Utilizat & Sustainable Pest, Wuhan 430070, Peoples R China
2.Guizhou Prov Tobacco Co, Zunyi Branch, Zunyi 56300, Peoples R China
3.Guizhou Acad Agr Sci, Inst Plant Protect, Guiyang 550006, Peoples R China
4.Huazhong Agr Univ, Natl Engn Res Ctr Microbial Pesticides, Wuhan 430070, Peoples R China
关键词： Spodoptera litura; Nilaparvata lugens; Danio rerio; Myzus persicae; venom gland; paralysis
期刊名称：ENTOMOLOGIA GENERALIS （ 影响因子：4.6； 五年影响因子：4.4 ）
ISSN： 0171-8177
年卷期： 2025 年
页码：
收录情况： SCI
摘要： Due to the increasing resistance to traditional insecticides and their negative impact on the ecological balance of pest control, there is a global trend to reduce pesticide use and develop effi cient, low-toxicity and environmentally friendly biopesticides. Toxins with insecticidal or paralytic activity derived from the venom of predatory natural enemies have emerged as a novel strategy for the development of novel biopesticides. In this study, a small molecular toxin, philanthotoxin-7,4 (PhTx-74), was identified in the venom gland homogenates of the predatory stink bug Arma custos (Hemiptera: tions into Ostrinia nubilalis (Lepidoptera: Pyralidae) larvae and Nilaparvata lugens (Hemiptera: Delphacidae) nymphs resulted in paralysis and subsequent mortality. The feeding of PhTx-74 to Myzus persicae (Hemiptera: Aphididae) larvae showed that PhTx-74 caused death. In addition, PhTx-74 exhibited no toxicity to the non-target organisms Danio rerio (Cyprinidae: Danionidae). This study identifies a small-molecule toxin with paralytic effects, demonstrating the potential of predatory insect venoms as sources of insecticidal agents.
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