Role and regulation of anaerobic methane oxidation catalyzed by NC10 bacteria and ANME-2d archaea in various ecosystems.
Role and regulation of anaerobic methane oxidation catalyzed by NC10 bacteria and ANME-2d archaea in various ecosystems.
复制标题
DOI：
10.1016/j.envres.2022.115174
复制
发表时间：
2022-12
影响因子：
8.3
通讯作者：
Wang‐ting Yang;L.‐d. Shen;Yanjing Bai
中科院分区：
文献类型：
--
作者：
Wang‐ting Yang;L.‐d. Shen;Yanjing Bai
淡水湿地、稻田、内陆水生生态系统和沿海湿地被认为是大气甲烷（CH 4）的重要来源。目前，越来越多的证据表明，由NC 10细菌和一个新的厌氧嗜甲烷古菌群（ANME-2d）介导的甲烷厌氧氧化（AOM）在缓解不同生态系统CH 4排放方面具有潜在的重要性。为了更好地了解NC 10细菌和ANME-2d古菌在CH 4减排中的作用，本文系统总结了淡水湿地、稻田、内陆水生生态系统和滨海湿地中不同AOM过程和功能微生物。NC 10细菌广泛存在于这些生态系统中，而依赖亚硝酸盐的AOM被认为是一种重要的CH 4汇，并导致氮素损失。亚硝酸盐和硝酸盐依赖的AOM共存于环境中，它们主要受土壤/沉积物无机氮和有机碳含量的影响。此外，盐度也是控制滨海湿地AOM过程的另一个关键因素。此外，ANME-2d古菌有很大的潜力耦合AOM还原铁（III），锰（IV），硫酸盐，甚至腐殖酸在不同的生态系统。然而，关于ANME-2d古菌的环境分布及其在环境CH 4减排中的作用的研究还不够充分。在这项研究中，我们提出了几个方向，为未来的研究不同的AOM过程和各自的功能微生物。
Freshwater wetlands, paddy fields, inland aquatic ecosystems and coastal wetlands are recognized as important sources of atmospheric methane (CH4). Currently, increasing evidence shows the potential importance of the anaerobic oxidation of methane (AOM) mediated by NC10 bacteria and a novel cluster of anaerobic methanotrophic archaea (ANME)—ANME-2d in mitigating CH4emissions from different ecosystems. To better understand the role of NC10 bacteria and ANME-2d archaea in CH4emission reduction, the current review systematically summarizes different AOM processes and the functional microorganisms involved in freshwater wetlands, paddy fields, inland aquatic ecosystems and coastal wetlands. NC10 bacteria are widely present in these ecosystems, and the nitrite-dependent AOM is identified as an important CH4sink and induces nitrogen loss. Nitrite- and nitrate-dependent AOM co-occur in the environment, and they are mainly affected by soil/sediment inorganic nitrogen and organic carbon contents. Furthermore, salinity is another key factor regulating the two AOM processes in coastal wetlands. In addition, ANME-2d archaea have the great potential to couple AOM to the reduction of iron (III), manganese (IV), sulfate, and even humics in different ecosystems. However, the study on the environmental distribution of ANME-2d archaea and their role in CH4mitigation in environments is insufficient. In this study, we propose several directions for future research on the different AOM processes and respective functional microorganisms.