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DOI | 10.1038/s41467-020-16016-y |
Extracellular electron transfer-dependent anaerobic oxidation of ammonium by anammox bacteria | |
Shaw, Dario R.1; Ali, Muhammad1; Katuri, Krishna P.1; Gralnick, Jeffrey A.2,3; Reimann, Joachim4; Mesman, Rob4; van Niftrik, Laura4; Jetten, Mike S. M.4; Saikaly, Pascal E.1 | |
2020-04-28 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Saudi Arabia; USA; Netherlands |
英文摘要 | Anaerobic ammonium oxidation (anammox) bacteria contribute significantly to the global nitrogen cycle and play a major role in sustainable wastewater treatment. Anammox bacteria convert ammonium (NH4+) to dinitrogen gas (N-2) using intracellular electron acceptors such as nitrite (NO2-) or nitric oxide (NO). However, it is still unknown whether anammox bacteria have extracellular electron transfer (EET) capability with transfer of electrons to insoluble extracellular electron acceptors. Here we show that freshwater and marine anammox bacteria couple the oxidation of NH4+ with transfer of electrons to insoluble extracellular electron acceptors such as graphene oxide or electrodes in microbial electrolysis cells. N-15-labeling experiments revealed that NH4+ was oxidized to N-2 via hydroxylamine (NH2OH) as intermediate, and comparative transcriptomics analysis revealed an alternative pathway for NH4+ oxidation with electrode as electron acceptor. Complete NH4+ oxidation to N-2 without accumulation of NO2- and NO3- was achieved in EET-dependent anammox. These findings are promising in the context of implementing EET-dependent anammox process for energy-efficient treatment of nitrogen. Bacteria capable of anaerobic ammonium oxidation (anammox) produce half of the nitrogen gas in the atmosphere, but much of their physiology is still unknown. Here the authors show that anammox bacteria are capable of a novel mechanism of ammonium oxidation using extracellular electron transfer. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000531354500009 |
WOS关键词 | HUMIC SUBSTANCES ; GRAPHENE OXIDE ; DENITRIFICATION ; HYDROXYLAMINE ; ACCEPTORS ; EVOLUTION ; SEDIMENTS ; ALIGNMENT ; SEARCH ; DRIVEN |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249497 |
专题 | 资源环境科学 |
作者单位 | 1.King Abdullah Univ Sci & Technol KAUST, Water Desalinat & Reuse Ctr WDRC, Biol & Environm Sci & Engn BESE Div, Thuwal 239556900, Saudi Arabia; 2.Univ Minnesota, Inst Biotechnol, St Paul, MN 55108 USA; 3.Univ Minnesota, Dept Plant & Microbial Biol, St Paul, MN 55108 USA; 4.Radboud Univ Nijmegen, Fac Sci, Inst Water & Wetland Res IWWR, Dept Microbiol, Heyendaalseweg 135, Nijmegen 6525 AJ, Netherlands |
推荐引用方式 GB/T 7714 | Shaw, Dario R.,Ali, Muhammad,Katuri, Krishna P.,et al. Extracellular electron transfer-dependent anaerobic oxidation of ammonium by anammox bacteria[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Shaw, Dario R..,Ali, Muhammad.,Katuri, Krishna P..,Gralnick, Jeffrey A..,Reimann, Joachim.,...&Saikaly, Pascal E..(2020).Extracellular electron transfer-dependent anaerobic oxidation of ammonium by anammox bacteria.NATURE COMMUNICATIONS,11(1). |
MLA | Shaw, Dario R.,et al."Extracellular electron transfer-dependent anaerobic oxidation of ammonium by anammox bacteria".NATURE COMMUNICATIONS 11.1(2020). |
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