Borges David Jackson Vieira, Souza Rafael Aparecido Carvalho, de Oliveira Alberto, de Sousa Raquel Maria Ferreira, Venâncio Henrique, Demetrio Guilherme Ramos, Ambrogi Bianca Giuliano, Santos Jean Carlos
Pos-Graduate Program in Ecology, Conservation and Biodiversity, Federal University of Uberlandia, Uberlandia 38405-240, Minas Gerais, Brazil.
Institute of Chemistry, Federal University of Uberlândia, Uberlândia 38408-100, Minas Gerais, Brazil.
Plants (Basel). 2024 Aug 8;13(16):2192. doi: 10.3390/plants13162192.
Plant herbivore interactions have long been recognized as a complex interplay influenced by various factors, including plant volatile emissions. Understanding the role of these volatiles in mediating plant predator interactions is crucial for developing sustainable pest management strategies. This study investigated the olfactory preferences of larvae for volatiles emitted by leaves, focusing on both seedlings and essential oils (EOs). We used Y-tube olfactometry to compare larval preferences between the clean air and various plant treatments, including undamaged and herbivore-damaged leaves. Chemical analysis of EOs revealed higher concentrations of oxygenated monoterpenes and sesquiterpenes in young and damaged leaves, particularly linalool, which has been implicated in insect attraction. Our results showed a significant preference for volatiles emitted by young damaged leaves over clean air for both seedlings (χ = 11.03, = 0.001) and EOs (χ = 9.76, = 0.002). larvae are significantly attracted to specific volatiles from damaged leaves, suggesting these compounds could serve as cues for natural enemy foraging. Our findings enhance the understanding of plant-predator dynamics and suggest potential applications of eucalyptus plantations to sustain populations for biocontrol purposes.
植物与草食动物的相互作用长期以来一直被认为是受包括植物挥发性物质排放在内的各种因素影响的复杂相互作用。了解这些挥发性物质在介导植物与捕食者相互作用中的作用对于制定可持续的害虫管理策略至关重要。本研究调查了[某种昆虫]幼虫对[某种植物]叶片释放的挥发性物质的嗅觉偏好，重点关注幼苗和精油（EOs）。我们使用Y型管嗅觉测定法比较了幼虫在清洁空气与各种植物处理（包括未受损和受草食动物损害的叶片）之间的偏好。对精油的化学分析表明，在幼嫩和受损叶片中，氧化单萜和倍半萜的浓度较高，尤其是芳樟醇，它与昆虫吸引有关。我们的结果表明，对于幼苗（χ = 11.03，P = 0.001）和精油（χ = 9.76，P = 0.002），幼虫对幼嫩受损叶片释放的挥发性物质的偏好明显高于清洁空气。[某种昆虫]幼虫被受损[某种植物]叶片中的特定挥发性物质显著吸引，这表明这些化合物可以作为天敌觅食的线索。我们的研究结果增进了对植物 - 捕食者动态的理解，并提出了桉树林用于生物防治目的以维持[某种昆虫]种群数量的潜在应用。
