功能性特征塑造了河口鱼的菌株学之外的肠道微生物组合
Lei Zhou1, Pengfei Wang2, Chuanbo Guo3
1University Joint Laboratory of Guangdong Province, Hong Kong and Macao Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
Science China. Life sciences
|March 7, 2026
概括
主体的功能特征,而不是基因,驱动鱼类的肠道微生物群组. 这种"功能共生"塑造了鱼类的适应性和生态利基区分.
科学领域:
- 微生物生态学 微生物生态学
- 进化生物学 进化生物学
- 鱼类生物学 鱼类生物学
背景情况:
- 宿主特异性肠道微生物组很常见,但它们组装的驱动因素,特别是宿主类基因与功能特征的作用,是有争议的.
- 了解这些驱动因素对于破译宿主微生物群共同进化和生态适应至关重要.
研究的目的:
- 调查宿主类型和功能特征对来自珍珠河河口的61种鱼类肠道微生物组成的相对贡献.
- 确定控制肠道微生物群组合和鱼类功能适应的机制和生态因素.
主要方法:
- 综合宿主类型和功能特征数据与肠道微生物群测序.
- 采用聚类和机器学习分析来识别肠型.
- 利用冗余分析将特定的功能特征与微生物群模式联系起来.
主要成果:
- 肠道微生物群的组成在鱼类物种之间差异很大,但植物共生对影响很小.
- 主体的功能特征,包括养策略,息地偏好和消化效率,是微生物群差异化的关键驱动因素.
- 确定了与特定的代谢适应相关的饮食习惯和迁徙行为相关的三种不同的肠肠类型.
- 功能性特征,如眼睛大小,口腔口腔和肠道长度,显著影响了肠类型聚类.
结论:
- 主体的功能特征,而不是主体的基因,主要是塑造肠道微生物群的组合,这种现象被称为"功能共生".
- 这种特征驱动的一致性凸显了肠道微生物群在鱼类区分和健康中的适应意义.
- 这些发现为水生生态系统中宿主特征和共生微生物群之间的复杂相互作用提供了新的见解.
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