Results 151 to 160 of about 4,455 (169)
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The ecophysiology of nitrite-oxidizing bacteria in the genus Nitrospira

2009
Ein Kernprozess des biogeochemischen Stickstoffzyklus in natürlichen Lebensräumen und technischen Anlagen (z. B. Kläranlagen) ist die Nitrifikation. Dieser aerobe Prozess untergliedert sich in zwei Stufen, der oxidativen Umwandlung von Ammoniak zu Nitrit bzw. von Nitrit zu Nitrat. Zwei verschiedene funktionelle Gruppen chemolithotropher Mikroorganismen
openaire   +1 more source

[Research progress on primers and molecular ecology of comammox Nitrospira].

Ying yong sheng tai xue bao = The journal of applied ecology, 2021
Nitrification is a key process in nitrogen cycling, which has received considerable attention in the research field of soil biochemistry. In 2015, the discovery of complete ammonia oxidizers (Comammox) challenged conventional two-step nitrification perspective, which represented a paradigm shift in the understanding of soil nitrogen cycling.
Fu-Yun, Gao, Ya-Ying, Li, Huai-Ying, Yao
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Biofilm: A strategy for the dominance of comammox Nitrospira

Journal of Cleaner Production, 2022
Yuxiang Zhao   +6 more
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[Enrichment of Nitrospira in Activated Sludge and Kinetic Characterization].

Huan jing ke xue= Huanjing kexue, 2018
Nitrospira was enriched from activated sludge by using fed-batch cultivation, and its related kinetic characterization was studied. The results showed that Nitrospira could be successfully enriched from the activated sludge for a controlled nitrite concentration no higher than 2 mg·L-1. The maximum nitrate oxidation rate was 48.72 mg·(g·h)-1.
Qian, Yao   +3 more
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Understanding Chlorite Dismutase from Candidatus Nitrospira defluvii

Journal of Biological Inorganic Chemistry, 2014
Chlorite dismutases (Clds) are heme b containing oxidoreductases that convert chlorite to chloride and molecular oxygen. In order to elucidate the role of conserved heme cavity residues in the catalysis of this reaction comprehensive mutational and biochemical analyses of Cld from “Candidatus Nitrospira defluvii” (NdCld) were performed, using UV-vis ...
S. Hofbauer   +13 more
openaire   +2 more sources

Selective Enrichment of Comammox Nitrospira in a Moving Bed Biofilm Reactor with Sufficient Oxygen Supply

Environmental Science & Technology, 2022
Min Zheng, Shihu Hu, Jianhua Guo
exaly  

Ecophysiological investigation of nitrite-oxidizing bacteria of the genus Nitrospira

2009
The oxidation of nitrite to nitrate, is performed by nitrite-oxidizing bacteria (NOB). This oxidation is catalyzed by the membrane-associated enzyme nitrite oxidoreductase (Nxr), which consists at least two subunits, the large α-subunit and the small β-subunit, encoded by the nxrAB gene operon.
openaire   +1 more source

Niche specialization of comammox Nitrospira in terrestrial ecosystems: Oligotrophic or copiotrophic?

Critical Reviews in Environmental Science and Technology, 2023
Hangwei Hu, Ji-Zheng He, Zi-Yang He
exaly  

Community assembly of comammox Nitrospira in coastal wetlands across southeastern China

Applied and Environmental Microbiology, 2023
Ji-Zheng He   +2 more
exaly  

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