4-Ethylacetophenone from Potato Plants Repels Phthorimaea operculella and Inhibits Oviposition: A Sustainable Management Strategy
文献类型： 外文期刊
作者： Ma, Xinyu 1 ; Yan, Junjie 1 ; Su, Guangyuan 1 ; Khamis, Fathiya M. 2 ; Hategekiman, Athanase 4 ; Gao, Yulin 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
2.Int Ctr Insect Physiol & Ecol ICIPE, POB 30772-00100, Nairobi, Kenya
3.Univ Pretoria, Dept Zool & Entomol, ZA-0028 Hatfield, South Africa
4.Rwanda Agr & Anim Resources Dev Board RAB, POB 5016, Kigali, Rwanda
关键词： potato tuber moth; repellents; plant volatile; electrophysiological behavioral responses
期刊名称：INSECTS （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN：
年卷期： 2025 年 16 卷 4 期
页码：
收录情况： SCI
摘要： The potato tuber moth, Phthorimaea operculella (Zeller), is an important pest of potato crops capable of boring into and consuming the potato tubers. Although chemical insecticides are employed to control P. operculella populations, their efficacy is frequently limited, raising environmental concerns. Host plant volatiles are important allelochemicals that can be exploited for the management of pests. In our previous studies, we identified five volatile organic compounds (3-ethylacetophenone, 4-ethylacetophenone, geranylacetone, ethylbenzene, and 4-hydroxy-4-methyl-2-pentanone) as allelochemicals potentially influencing the oviposition behavior of P. operculella. Using electroantennography (EAG) and behavioral assays, we found that 4-ethylacetophenone significantly repelled P. operculella at all tested concentrations (1 mu g, 10 mu g, and 100 mu g; p < 0.05), while 3-ethylacetophenone showed no significant effects (p > 0.05). Finally, the effect of 4-ethylacetophenone on preventing P. operculella from laying eggs was determined by an oviposition selection experiment. Our findings indicate that 4-ethylacetophenone derived from potato plants not only repels P. operculella and prevents egg-laying but also has the potential to reduce the number of eggs, making it a promising green alternative for controlling this pest.
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