基质吸收模式塑造了海洋 prokaryotic 微生物群中的利基区分
Zihao Zhao1, Chie Amano1, Thomas Reinthaler1
1Department of Functional and Evolutionary Ecology, Bio-Oceanography and Marine Biology Unit, University of Vienna, Djerassiplatz 1, A-1030 Vienna, Austria.
Science advances
|May 15, 2024
概括
海洋微生物使用不同的载体消耗有机物质,影响海洋循环. 这项研究揭示了载体表达的分类学和生活方式驱动的变异,突出了 prokaryotes 之间的利基区分.
科学领域:
- 海洋微生物学 海洋微生物学
- 生物地质化学循环是什么
- 分子生态学分子生态学
背景情况:
- 海洋异质性 prokaryotes 对于回收海洋中的有机物质至关重要.
- Prokaryotes 的基质吸收是由特定的载体蛋白调解的.
- 了解载体多样性是解读海洋生态系统中微生物作用的关键.
研究的目的:
- 为了研究海洋水柱中 prokaryotic 载体表达的尺寸分离模式.
- 为了确定载体表达式变化的分类学基础.
- 阐明不同类型的载体在基质同化和微生物生活方式中的作用.
主要方法:
- 多种"奥米克"方法针对ATP结合盒 (ABC) 传送器和TonB依赖传送器 (TBDT).
- 分析不同微生物种群的载体基质特异性.
- 载体表达模式与微生物生活方式和生态角色的相关性.
主要成果:
- 观察到 prokaryotic 载体表达的尺寸分数模式,与分类学变异相关.
- 自由生活的微生物 (SAR11,Rhodobacterales,Oceanospirillales) 主要使用ABC转运器来获取有机.
- 与粒子相关的微生物 (Alteromonadales, Bacteroidetes, Sphingomonadales) 使用TBDT来获取富含碳的物质和金属合物.
- 载体表达支持不同的生活方式,特别是在深海原核生物中.
结论:
- 有机物同化中的载体分歧意味着海洋 prokaryotes 中明显的利基分离.
- 微生物社区结构和基质可用性驱动载体表达模式.
- 这项研究增强了我们对海洋环境中 prokaryote 介导的有机物循环循环的理解.
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