Results 51 to 60 of about 1,479 (179)

Sustained nitrogen loss in a symbiotic association of ComammoxNitrospiraand Anammox bacteria [PDF]

Water Research, 2020
ABSTRACTThe discovery of complete aerobic and anaerobic ammonia-oxidizing bacteria (Comammox and Anammox) significantly altered our understanding of the global nitrogen cycle. A high affinity for ammonia (Km(app),NH3≈ 63nM) and oxygen place the first described isolate, ComammoxNitrospira inopinatain the same trophic category as organisms such as some ...
Ekaterina Y. Gottshall, Sam J. Bryson, Kathryn I. Cogert, Matthieu Landreau, Christopher J. Sedlacek, David A. Stahl, Holger Daims, Mari Winkler   +7 more
openaire   +3 more sources

Niche differentiation and symbiotic association among ammonia/nitrite oxidizers in a full-scale rotating biological contactor

, 2022
Although the distribution of ammonia/nitrite oxidizers had been profiled in different habitats, current understanding is still limited regarding their niche differentiation in the integrated biofilm reactors, the symbiotic associations of ammonia/nitrite
Chen, Yiqiang, Liu, Lei, Wang, Chunxiao, Wang, Dou, Wang, Yubo, Wang, Yulin, Xu, Xiaoqing, Yang, Yu, Zhang, Tong   +8 more
core   +2 more sources

Benzimidazole fungicide biotransformation by comammox Nitrospira bacteria: Transformation pathways and associated proteomic responses

Journal of Hazardous Materials, 2023
Benzimidazole fungicides are frequently detected in aquatic environments and pose a serious health risk. Here, we investigated the metabolic capacity of the recently discovered complete ammonia-oxidizing (comammox) Nitrospira inopinata and kreftii to transform a representative set of benzimidazole fungicides (i.e., benzimidazole, albendazole ...
Ping Han, Ana B. Rios-Miguel, Xiufeng Tang, Yaochun Yu, Li-Jun Zhou, Lijun Hou, Min Liu, Dongyao Sun, Mike S.M. Jetten, Cornelia U. Welte, Yujie Men, Sebastian Lücker   +11 more
openaire   +3 more sources

Niche differentiation and evolution of comammox Nitrospira through a comparative genomics analysis [PDF]

, 2017
Nitrification, the biological oxidation of ammonium to nitrate, is a fundamental process in the nitrogen cycle and plays an important role in natural and engineered systems. Throughout the last century, nitrification was assumed to be a two-step process executed by two different functional groups, ammonia oxidizing prokaryotes (AOP) and nitrite ...
Fowler, Jane, Palomo, Alejandro, Pedersen, Anders Gorm, Sicheritz-Pontén, Thomas, Smets, Barth F.   +4 more
core   +2 more sources

Differential contribution of nitrifying prokaryotes to groundwater nitrification [PDF]

, 2023
The ecophysiology of complete ammonia-oxidizing bacteria (CMX) of the genus Nitrospira and their widespread occurrence in groundwater suggests that CMX bacteria have a competitive advantage over ammonia-oxidizing bacteria (AOB) and archaea (AOA) in these
Bristow, Laura A., Chaudhari, Narendrakumar, Herrmann, Martina, Jehmlich, Nico, Krüger, Markus, Küsel, Kirsten, Overholt, Will A., Taubert, Martin, Thamdrup, Bo, von Bergen, Martin   +9 more
core   +2 more sources

DNA- and RNA-SIP Reveal Nitrospira spp. as Key Drivers of Nitrification in Groundwater-Fed Biofilters

mBio, 2019
Nitrification, the oxidative process converting ammonia to nitrite and nitrate, is driven by microbes and plays a central role in the global nitrogen cycle.
Arda Gülay, S. Jane Fowler, Karolina Tatari, Bo Thamdrup, Hans-Jørgen Albrechtsen, Waleed Abu Al-Soud, Søren J. Sørensen, Barth F. Smets   +7 more
doaj   +1 more source

Comparative genomics sheds light on niche differentiation and the evolutionary history of comammox Nitrospira. [PDF]

ISME J, 2018
Abstract The description of comammox Nitrospira spp., performing complete ammonia-to-nitrate oxidation, and their co-occurrence with canonical β-proteobacterial ammonia oxidizing bacteria (β-AOB) in the environment, calls into question the metabolic potential of comammox Nitrospira and the evolutionary history of their ammonia ...
Palomo A, Pedersen AG, Fowler SJ, Dechesne A, Sicheritz-Pontén T, Smets BF.   +5 more
europepmc   +5 more sources

Metagenomic approaches reveal differences in genetic diversity and relative abundance of nitrifying bacteria and archaea in contrasting soils

Scientific Reports, 2021
The abundance and phylogenetic diversity of functional genes involved in nitrification were assessed in Rothamsted field plots under contrasting management regimes—permanent bare fallow, grassland, and arable (wheat) cultivation maintained for more than ...
Ian M. Clark, David J. Hughes, Qingling Fu, Maïder Abadie, Penny R. Hirsch   +4 more
doaj   +1 more source

Evaluation of four primer sets for analysis of comammox communities in black soils

Frontiers in Microbiology, 2022
Comammox, as a newly discovered ammonia oxidizer, urgently needs highly efficient and specific primers to detect its community structure and diversity. In this study, the performance of widely used primer set Ntsp-amoA 162F/359R and newly designed primer
Xin Bai, Xin Bai, Xiaojing Hu, Junjie Liu, Haidong Gu, Haidong Gu, Jian Jin, Xiaobing Liu, Guanghua Wang   +8 more
doaj   +1 more source

Hydrazine Synthase From Anammox Is Inhibited by Linear and Aromatic Alkynes

Environmental Microbiology, Volume 28, Issue 3, March 2026.
Linear and aromatic alkynes inhibit anammox in culture and in wetlands. The inhibition by alkynes is specific to the hydrazine synthase, a key enzyme in the anammox pathway. ABSTRACT N2O emissions by nitrifiers are often estimated using selective inhibitors, such as 1‐alkynes.
Cerys Maryan, Guylaine H. L. Nuijten, Andrew T. Crombie, Sebastian Lücker, Victoria Gibson, Marcela Hernández, J. Colin Murrell, Laura E. Lehtovirta‐Morley   +7 more
wiley   +1 more source