Plectranthus tomentosa effectively repels and control Bemisia tabaci MED with its volatiles
文献类型： 外文期刊
作者： Li, Ruxu 1 ; Liu, Wenqing 2 ; Wang, Su 2 ; Di, Ning 2 ; Yang, Shuairan 3 ; Li, Wenxiang 3 ; Yang, Yuting 1 ; Tian, Lixia 2 ;
作者机构： 1.Yangtze Univ, Minist Agr & Rural Affairs, Coconstruct Minist & Prov,Inst Insect Sci,Key Lab, Hubei Engn Technol Ctr Pest Forewarning & Manageme, Jingzhou 434000, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing 100097, Peoples R China
3.Hebei North Univ, Coll Agr & Forestry Technol, Zhangjiakou 075000, Peoples R China
关键词： Bemisia tabaci; Plectranthus tomentosa; Preference behaviors; Volatiles; Olfactory responses
期刊名称：CROP PROTECTION （ 影响因子：2.5； 五年影响因子：3.0 ）
ISSN： 0261-2194
年卷期： 2025 年 194 卷
页码：
收录情况： SCI
摘要： Whitefly (Bemisia tabaci) is a global agricultural pest by causing serious losses and has developed cross resistance to multiple insecticides in crop production. It is essential to find sustainable measures to control B. tabaci. In this study, we found a shrubby perennial herb, vicks plant (Plectranthus tomentosa) effectively repelled B. tabaci. Preference and behaviors of B. tabaci in cages experiments and four-arm olfactometer assays were analyzed. Bemisia tabaci numbers were less on P. tomentosa plants in the cage plant-preference trials and had lower oviposition compared to tomato plants. To further investigate, we detected seven volatile organic compounds (VOCs) from P. tomentosa through electroantennogram (EAG) recordings. All these VOCs could elicit antennal responses of B. tabaci female and male adults. Interestingly, limonene, alpha-pinene and terpinolene were certified having repelling effects on B. tabaci adults by Y-tube olfactometer assays. Based on these results, P. tomentosa could be could be effectively utilized as a functional plant to repel B. tabaci. Additionally, limonene, alpha-pinene and terpinolene could be development into repellents for B. tabaci. Our research could not only verify the role of P. tomentosa in influencing B. tabaci behaviors, but also offer an environmentally friendly and effective strategy for managing B. tabaci.
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