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Peripheral Coding of Sex Pheromones in the Tomato Leaf Miner, Phthorimaea absoluta (Meyrick)
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2024-11-15 , DOI: 10.1021/acs.jafc.4c09441
Xiaoyu Hu, Rui Tang, Limei Song, Guoliang Li, Tenghao Gao, Li Chen, Hao Guo

Phthorimaea absoluta releases (E3,Z8,Z11)-tetradeca-3,8,11-trienyl acetate (E3,Z8,Z11–14:OAc) and (E3,Z8)-tetradeca-3,8-dienyl acetate (E3,Z8–14:OAc) with a ratio of 90:10 as the sex pheromone. However, how this pest uses pheromone receptors (PRs) to detect the two pheromone components is unknown. Here, we functionally characterize the PR repertoire of P. absoluta. First, we identified five putative PRs by transcriptome sequencing, i.e., PabsOR4, PabsOR8, PabsOR12a, PabsOR14, and PabsOR17. These receptors are predominantly expressed in the male antennae. Next, we expressed them in Drosophila OR67 neurons and investigated their responses. PabsOR14 and PabsOR8 selpond to the main component,E3,Z8,Z11–14:OAc with different sensitivities, while PabsOR17 is tuned to the minor component, E3,Z8–14:OAc. In addition, PabsOR4 weakly responds to both sex pheromone components. Moreover, PabsOR17 and PabsOR4 potently respond to a non-sex pheromone compound, (Z)-7-dodecenyl acetate (Z7–12:OAc). Lastly, we demonstrated that Z7–12:OAc can replace E3,Z8–14:OAc to attract virgin males. Our findings elucidate the peripheral coding of the sex pheromone in P. absoluta, providing a new perspective for controlling it.

中文翻译:


番茄潜叶蛾 Phthorimaea absoluta (Meyrick) 中性信息素的外周编码



Phthorimaea absoluta 以 90:10 的比例释放 (E 3,Z 8,Z11)-十四-3,8,11-三烯酯乙酸酯 (E 3,Z 8,Z11-14:OAc) 和 (E 3,Z8)-十四-十二-二烯基乙酸酯 (E 3,Z8-14:OAc)。然而,这种害虫如何使用信息素受体 (PRs) 来检测这两种信息素成分尚不清楚。在这里,我们从功能上表征了 P. absoluta 的 PR 库。首先,我们通过转录组测序确定了 5 个推定的 PR,即 PabsOR4PabsOR8PabsOR12aPabsOR14PabsOR17。这些受体主要在雄性触角中表达。接下来,我们在果 OR67 神经元中表达它们并研究它们的反应。PabsOR14 和 PabsOR8 与主要成分 E 3,Z 8,Z11-14:OAc 相对应,具有不同的灵敏度,而 PabsOR17 与次要成分 E 3,Z8-14:OAc 相协调。此外,PabsOR4 对两种性信息素成分的反应较弱。此外,PabsOR17 和 PabsOR4 对非性信息素化合物 (Z)-7-十二烯乙酸酯 (Z7–12:OAc) 有强反应。最后,我们证明 Z7-12:OAc 可以替代 E 3,Z8-14:OAc 来吸引处女雄性。我们的研究结果阐明了 P. absoluta 中性信息素的外周编码,为控制它提供了新的视角。
更新日期:2024-11-15
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