微生物厌氧氨氧化耦合铁还原的研究进展及展望

Research progress and prospect of microbial ammonium oxidation coupled to Fe(III) reduction

摘要:

厌氧氨氧化耦合铁还原[ammonium oxidation coupled to Fe(III) reduction, Feammox]作为一种连接氮循环和铁循环之间的氮代谢途径，在自然界中氨氮转化过程中起到了重要作用。系统研究Feammox驱动的氮铁的生物地球化学耦合过程及其受控因素，有助于深入理解地球元素循环的微生物机制，也有助于揭示Feammox在缺氧地质历史时期对古海洋氮库演变和含铁矿物形成过程中的作用。本文从Feammox发展历史、相关微生物、影响因素和潜在地质意义等方面综述了Feammox的研究过程和研究内容，并对Feammox的未来研究方向提出展望。

Abstract:

Ammonium oxidation coupled to Fe(III) reduction (Feammox), as a nitrogen metabolic pathway connecting N cycle and Fe cycle, plays an important role in the process of ammonia nitrogen conversion in nature. A systematic study of the biogeochemical coupling process of nitrogen and iron driven by Feammox and its controlling factors will help to understand microbial mechanism of earth’s element cycle in depth, and also avail to reveal of the role of Feammox in the evolution of the nitrogen pool and the formation of iron-bearing minerals in Paleo-ocean. This review mainly summarized the development history, related microorganisms, influencing factors and potential geological significance of Feammox, followed by prospect on the future research of Feammox.