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肠道微生物群的变异推动了叶虫在宿主植物中的差异性表现

Xiayu Li¹, Yanping Zhang¹, Xiaotong Chen¹

¹Centre for Behavioral Ecology and Evolution (CBEE) and Arachnid Resources Centre of Hubei, School of Life Sciences, Hubei University, Wuhan, China.

|November 28, 2025

概括

昆虫在宿主植物上的表现严重依赖肠道微生物群. 一种特定的细菌,Rosenbergiella nectarea,在被食Salix babylonica的叶虫中恢复了卓越的性能,突出了微生物群在宿主偏好的作用.

科学领域:

生态生态学生态生态学
微生物学微生物学
昆虫科学昆虫科学昆虫科学

背景情况:

宿主植物的选择显著影响草食者健康.
植物介导的肠道微生物群对于昆虫的表现至关重要,但它们在植物之间的差异性表现中的确切作用尚不清楚.

研究的目的:

研究肠道微生物群对叶Plagiodera versicolora在不同宿主植物上的偏好-性能关系的影响.
确定特定的微生物参与者和调解植物昆虫相互作用的分子机制.

主要方法:

在各种宿主植物上对P. versicolora进行比较性能的测试.
无菌 (GF) 昆虫养殖和微生物再引入实验.
16S rRNA基因测序用于肠道微生物群分析.
转录组和代谢组分析以确定分子通路.

主要成果:

P. versicolora更喜欢和更好地表现在Salix babylonica上,但这种关系在微生物群贫乏的幼虫中消失了.
罗森伯吉埃拉 (Rosenbergiella nectarea) 被丰富了S. babylonica养的幼虫,对于恢复GF幼虫的优异性能至关重要.
通过增强营养代谢和发育信号,R. nectarea促进了幼虫的生长,可能是通过PvABCG5介导的胆固醇-20E合成途径.

结论:

在食草昆虫中,宿主植物诱导的性能差异在很大程度上是由它们的肠道微生物群介导的.
肠道微生物组在确定食草动物宿主偏好和偏好-性能关系方面发挥着至关重要的作用.

关键词:

流虫的版本颜色 (Plagiodera versicolora) 是一个流虫.罗森伯吉埃拉花 (Rosenbergiella nectarea) 是一种植物.肠道细菌是什么肠道细菌是什么业绩表现业绩表现业绩表现

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