宿主进化历史驱动全球分布的海绵家族Petrosiidae中的 Prokaryotic 多样性
N van der Windt1,2, B Paix3, J C Biesmeijer1,2
1Naturalis Biodiversity Center, Leiden, The Netherlands.
Molecular ecology
|November 29, 2025
概括
宿主海绵的基因组显著影响其微生物组合,揭示了生物共生的模式. 然而,像深度和位置这样的环境因素也可以推动密切相关的海绵物种中的微生物社区分歧.
科学领域:
- 海洋生物学和微生物生态学.
- 进化生物学和宿主微生物相互作用.
背景情况:
- 海绵微生物群落对于海洋生态系统和生物活性化合物发现至关重要.
- 宿主身份影响微生物群多样性,但进化驱动因素尚不清楚.
- 家族Petrosidae是研究这些关系的关键模型.
研究的目的:
- 为了研究海绵家族Petrosidae中的生物共生模式.
- 为了确定宿主基因如何影响海绵微生物组的组成,在广泛的地理范围内.
- 探索塑造海绵相关微生物群落的进化和生态因素.
主要方法:
- 用28S rRNA,18S rRNA和COI基因测序用于宿主识别的植物遗传学分析.
- 16S rRNA基因扩增序列测序用于表征 prokaryotic 社区.
- 基于距离的指标和拓一致性分析,以评估生物共生.
主要成果:
- 强有力的生物共生证据,表明宿主基因显著结构海绵微生物组.
- 微生物组的组成受到宿主身份的影响,即使在细微的分类学层面.
- 观察到的不一致性:密切相关的物种表现出与深度或地理位置相关的微生物群.
结论:
- 宿主基因是Petroidae海绵微生物组结构的主要驱动因素.
- 环境因素 (深度,地理) 可以取代遗传学信号,导致微生物群的分歧.
- 这项研究提供了海绵生物共生的第一个大规模家庭层面分析,为海洋宿主-微生物共同进化提供了洞察力.
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