具有精简基因组的广泛分布的淡水微生物在高丰度的队列中共同存在
Alejandro Rodríguez-Gijón1, Armando Pacheco-Valenciana2, Felix Milke3
1Department of Ecology, Environment and Plant Sciences, Science for Life Laboratory, Stockholm University, 106 91, Stockholm, Sweden. alejandro.rgijon@gmail.com.
Scientific reports
|October 3, 2025
概括
具有较小基因组的 Prokaryotes 在淡水中更广泛和丰富. 基因组精简促进了微生物群落内的宇宙主义和代谢相互依赖.
科学领域:
- 微生物生态学 微生物生态学
- 基因组学就是基因组学.
- 进化生物学 进化生物学
背景情况:
- Prokaryotes 中的基因组大小反映了生态进化历史,影响生活方式和息地.
- 在 prokaryotes 中基因组大小,流行率和共发生之间的关系尚未完全理解.
研究的目的:
- 评估 prokaryotic 基因组大小,相对丰富性和淡水生态系统中的流行之间的全球范围的关系.
- 研究基因组简化如何影响微生物社区的动态和相互依赖.
主要方法:
- 分析了80,561个中高质量的 prokaryotic 基因组.
- 从636个淡水元基因组中识别了9028种物种,使用平均核酸标识 (ANI >95%).
- 网络分析以探索共发生模式和代谢依赖.
主要成果:
- 缩小基因组的 Prokaryotes 显示出更高的流行率和相对丰富,表明基因组简化促进了世界主义.
- 具有精简基因组的流行 prokaryotes 形成共同发生的群体,可能由代谢依赖维持.
- 这些群体中的物种对合成必需代谢物 (维生素,氨基酸,核酸) 的能力有限,促进了社区的互补性.
结论:
- 基因组简化是塑造 prokaryotic 社区动态的关键生态进化策略.
- 在淡水微生物群落中,基因组简化促进了代谢的相互依赖和互补.
- 基本生物合成功能的存在取决于使用情况,核酸和氨基酸生物合成比维生素生物合成更完整.
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