Phenolics as ecologically relevant cues for slime flux breeding Drosophila virilis.

IF 4.6 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES iScience Pub Date : 2024-10-18 eCollection Date: 2024-11-15 DOI:10.1016/j.isci.2024.111180

Venkatesh Pal Mahadevan, Regina Stieber-Rödiger, Markus Knaden, Bill S Hansson

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Abstract

Drosophila species belonging to the virilis group offer a unique opportunity for studying olfactory adaptations necessary for survival within forest ecosystems as many of these species breed within decaying plant vascular tissues. However, the knowledge regarding olfactory preferences within their ecological niche is extremely limited. Here, we focus on Drosophila virilis and identify over 120 distinct odors from a natural slime flux source. We identify lignin as an attractant and a positive oviposition cue for D. virilis. Furthermore, lignin-derived guaiacol is highlighted as a robust attractant for D. virilis. We demonstrate that guaiacol is detected by the DvirOr49b receptor, which exhibits a narrow sensitivity to methylphenols, including o-cresol. D. virilis and D. ezoana, both belonging to the virilis group, exhibit strong attraction to o-cresol. In summary, our research offers a comprehensive analysis of the diverse array of odorants encountered by D. virilis within its natural habitat and their behavioral significance.

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酚类物质作为黏液流繁殖果蝇的生态相关线索

病毒果蝇属果蝇物种为研究在森林生态系统中生存所需的嗅觉适应性提供了一个独特的机会，因为其中许多物种都在腐烂的植物维管束组织中繁殖。然而，对其生态位中嗅觉偏好的了解却极为有限。在这里，我们重点研究了 virilis 果蝇，并从天然粘液通量源中识别出了 120 多种不同的气味。我们发现木质素对 virilis 果蝇来说是一种吸引物和积极的产卵线索。此外，木质素衍生的愈创木酚（guaiacol）也被认为是一种强力吸引病毒尾蚴的物质。我们证明愈创木酚可被 DvirOr49b 受体检测到，该受体对甲基苯酚（包括邻甲酚）的敏感性很低。同属 virilis 组的 D. virilis 和 D. ezoana 对邻甲酚有很强的吸引力。总之，我们的研究全面分析了 virilis 在其自然栖息地中遇到的各种气味物质及其行为意义。

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来源期刊

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

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