Yeast-derived volatiles orchestrate an insect-yeast mutualism with oriental armyworm moths
文献类型： 外文期刊
作者： Ma, Baiwei 1 ; Chang, Hetan 1 ; Guo, Mengbo 5 ; Ai, Dong 2 ; Wang, Jiayu 2 ; Chen, Run 2 ; Liu, Xiaolan 1 ; Ren, Bingzhong 3 ; Hansson, Bill S. 6 ; Wang, Guirong 1 ;
作者机构： 1.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr,Minist Agr & Rura, Shenzhen 518120, Peoples R China
2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
3.Northeast Normal Univ, Sch Life Sci, Jilin Prov Key Lab Anim Resource Conservat & Utili, Changchun 130024, Peoples R China
4.Northeast Normal Univ, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China
5.Zhejiang A&F Univ, Adv Coll Agr Sci, Dept Plant Protect, Zhejiang Key Lab Biol & Ecol Regulat Crop Pathogen, Hangzhou 311300, Zhejiang, Peoples R China
6.Max Planck Inst Chem Ecol, Dept Evolutionary Neuroethol, Hans Knoell Str 8, D-07745 Jena, Germany
期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）
ISSN：
年卷期： 2025 年 16 卷 1 期
页码：
收录情况： SCI
摘要： Interactions among insects, plants, and microorganisms are fundamental to ecosystem dynamics, with floral nectar and pollen serving as key resources for various organisms. Yeasts, such as Metschnikowia reukaufii, commonly found in nectar, influence nectarial attraction through volatile compounds (VOCs), yet the underlying biological mechanisms remain elusive. Here, we show that isoamyl alcohol, a prominent yeast VOC, attracts oriental armyworm moths (Mythimna separata) to pollen-rich, yeast-fermented nectar. In a series of electrophysiological and behavioral assays, we show that isoamyl alcohol activates a single class of highly specific olfactory sensory neurons expressing the olfactory receptor MsepOR8. In the moth antennal lobe, these neurons target the AM2 glomerulus, which responds to isoamyl alcohol. Genetic disruption of MsepOR8 leads to complete abolition of both physiological and behavioral responses to isoamyl alcohol, resulting in an impaired ability to locate nectar sources. Moreover, we show that isoamyl alcohol-induced foraging behavior fosters a mutualistic relationship between yeast and moths to some extent, enhancing yeast dispersal and increasing moth reproductive success. Our results unveil a highly specific mechanism by which a yeast-derived VOC facilitates insect-yeast mutualism, providing insights into insect-microbe interactions within pollination ecosystems.
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