Feeding by the mirid bug Helopeltis bakeri Poppius alters the emission of host plant volatiles

IF 1.3 3区农林科学 Q3 ENTOMOLOGY

Arthropod-Plant Interactions Pub Date : 2025-07-23 DOI:10.1007/s11829-025-10164-y

Maria Criselda V. Dela Cruz, Mary Angelique A. Tavera, Kris Lord T. Santos, Anna Karen C. Laserna, Kozo Watanabe, Divina M. Amalin, Jose Isagani B. Janairo

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Abstract

The mirid bug Helopeltis bakeri Poppius feeds on a wide range of host plants including economically important crops, like cocoa (Theobroma cacao) and sweetpotato (Ipomea batatas), yet little is known about its complex interactions with its host plants. Here, we assessed the response of sweetpotato to feeding by H. bakeri. Headspace volatiles from healthy and infested sweetpotato cuttings were collected and compared. Feeding resulted in the production of a new headspace constituent, the terpene squalene, and an increase in the emission of other volatiles, including several terpenes and terpenoids and a green leaf volatile [(Z)-3-hexenyl acetate]. Electroantennographic and behavioral analyses confirmed that squalene is not electrophysiologically and behaviorally active toward H. bakeri, which suggests that squalene might have other ecological functions. The results provide important baseline information on the interactions of H. bakeri with its host plant, but the role of these volatile compounds in multitrophic interactions cannot be assessed yet since the natural enemies (e.g., parasitoids) of H. bakeri have not yet been identified.

Graphical Abstract

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蜜蝽Helopeltis bakeri Poppius的摄食改变了寄主植物挥发物的排放

mirid臭虫Helopeltis bakeri Poppius以多种寄主植物为食，包括经济上重要的作物，如可可（Theobroma cacao）和甘薯（ipoma batatas），但人们对其与寄主植物的复杂相互作用知之甚少。在此，我们评估了甘薯对面包芽孢杆菌取食的反应。对健康甘薯扦插和侵染甘薯扦插的顶空挥发物进行了收集和比较。进料导致了一种新的顶空成分——萜烯角鲨烯的产生，并增加了其他挥发物的排放，包括几种萜烯和萜类化合物以及绿叶挥发物[(Z)-3-己烯乙酸酯]。触角电图和行为分析证实，角鲨烯在电生理和行为上对白僵鱼没有活性，这表明角鲨烯可能具有其他生态功能。这些结果为芽孢杆菌与其寄主植物的相互作用提供了重要的基线信息，但由于芽孢杆菌的天敌（如拟寄生物）尚未确定，这些挥发性化合物在多营养相互作用中的作用尚未得到评估。图形抽象

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来源期刊

Arthropod-Plant Interactions 生物-昆虫学

CiteScore

3.00

自引率

6.20%

发文量

审稿时长

6 months

期刊介绍： Arthropod-Plant Interactions is dedicated to publishing high quality original papers and reviews with a broad fundamental or applied focus on ecological, biological, and evolutionary aspects of the interactions between insects and other arthropods with plants. Coverage extends to all aspects of such interactions including chemical, biochemical, genetic, and molecular analysis, as well reporting on multitrophic studies, ecophysiology, and mutualism. Arthropod-Plant Interactions encourages the submission of forum papers that challenge prevailing hypotheses. The journal encourages a diversity of opinion by presenting both invited and unsolicited review papers.