无氧氨氧化与硫酸盐还原相结合,将与硫循环连接起来
Lu-Yao Liu1, Xuan Wang1, Cheng-Cheng Dang1
1State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioresource technology
|May 27, 2024
概括
硫酸盐依赖的氨氧化 (Sulfammox) 连接了和硫循环. 这项研究显示,硫菌利用酸盐和硫酸盐作为电子受体,将和硫酸盐转化为气,硫化物和元素硫.
科学领域:
- 环境微生物学 环境微生物学
- 生物地质化学循环的过程
背景情况:
- 硫酸盐依赖的氧化 (Sulfammox) 是连接和硫的生物地球化学循环的一个关键过程.
- 特定的代谢途径和微生物参与Sulfammox的参与者仍然在很大程度上没有表征.
研究的目的:
- 阐明参与硫酸盐依赖的氧化过程中的代谢途径和微生物群落.
- 为了研究不同电子受体在驱动Sulfammox中的作用.
主要方法:
- 长期的微生物丰富培养是在不同的电子受体条件下建立的 (仅硫酸盐,硫酸盐 + 酸盐).
- 量化了氨的消耗,硫酸盐的减少和产品的形成 (气,硫化物,元素硫).
- 用转基因组分析来识别微生物参与者及其编码的代谢途径.
主要成果:
- 当硫酸盐是唯一的电子受体时,氨没有被消耗,这可能是由于硫化物抑制.
- 当硫酸盐和酸盐作为电子受体时,有效的氨去除 (∼10 mg N/L/d) 发生.
- 鉴定出Candidatus Brocadia sapporoensis和Candidatus Brocadia fulgida是Sulfammox的主要表现者,它们既具有氨氧化和异样硫酸盐还原通路.
- 发现Candidatus Kuenenia stuttgartiensis使用硫化物将酸盐转化为酸盐,与主要的Sulfammox过程不同.
结论:
- 硫菌 (Candidatus Brocadia sapporoensis和Candidatus Brocadia fulgida) 具有专门的新陈代谢,使用硫酸盐和酸盐作为电子受体.
- 该研究提供了对微生物相互作用和控制和硫循环的代谢策略的关键见解.
关键词:
它们是Candidatus Brocadia fulgida的种子.它们是Candidatus Brocadia sapporoensis的种子.候选 Kuenenia stuttgartiensis 在线观看 在线观看 在线观看 在线观看硫胺的含量是多少更多相关视频
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