在抑制性氨度下,生物气反应堆中的甲基生成需要全社区的宽容度
Damien R Finn1, Lena Rohe2, Sascha Krause3
1Thünen Institute for Biodiversity, Johann Heinrich von Thünen Institute, 38116, Braunschweig, Germany. damien.finn@thuenen.de.
Applied microbiology and biotechnology
|September 6, 2023
概括
氨的预适应增强了沼气反应堆中的甲产量,通过促进整个社区的耐受性. 这允许耐受性微生物之间强大的相互作用,即使在抑制条件下.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 无氧消化消化无氧消化
背景情况:
- 氨 (NH3) 是无氧消化过程中甲产生的关键抑制剂.
- 大多数研究都集中在甲原性古生物上,忽视了整个社区对NH3压力的反应.
- 了解微生物社区的动态对于优化生物气生产至关重要.
研究的目的:
- 对NH3抑制的社区规模和个体税收反应进行调查.
- 为了比较预先适应的与未适应的微生物群落中的NH3耐受性.
- 确定生物气系统中NH3耐受性的机制和分类学分布.
主要方法:
- 高NH3预适应和不适应的微生物群落的比较分析.
- 在抑制性NH3度下进行社区规模和单个种类分析.
- 隐藏的马尔科夫模型的基因组学分析和微生物相互作用的网络分析.
主要成果:
- 预先适应的社区在NH3抑制下表现出优异的甲基生成,与未适应的社区相比.
- 在功能性重要族群中,NH3耐受性很普遍,存在敏感和耐受的个体.
- 预先适应的社区中的甲基生物发生依赖于耐受性甲基生物和其他耐受性种类之间的相互作用.
结论:
- 在NH3抑制下的甲基生成取决于整个 prokaryotic 社区内的广泛耐受性.
- 耐NH3的机制似乎是非特异性的和广泛的,不局限于特定的种群.
- 预先适应氨和整个社区的耐受性对于开发强大的甲原生物气系统至关重要.
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