Results 91 to 100 of about 198 (115)

Competitive enrichment of comammox Nitrospira in floccular sludge

Water Research
The discovery of complete ammonium oxidation (comammox) has subverted the traditional perception of two-step nitrification, which plays a key role in achieving biological nitrogen removal from wastewater. Floccular sludge-based treatment technologies are being applied at the majority of wastewater treatment plants in service where detection of various ...
Linyan Yang, Bing-Jie Ni, Xueming Chen   +2 more
exaly   +5 more sources

Biogeographic distribution of comammox bacteria in diverse terrestrial habitats

Science of The Total Environment, 2020
Comammox, the microbial group capable of completely oxidizing ammonia to nitrate, challenged the traditional two-step nitrification process where ammonia is oxidized by ammonia-oxidizing archaea (AOA) and bacteria (AOB), and nitrite by nitrite-oxidizing bacteria (NOB).
Yao Shi, Yingying Jiang, Shanyun Wang, Xiaomin Wang, Guibing Zhu   +4 more
openaire   +2 more sources

Comammox biogeography subject to anthropogenic interferences along a high-altitude river

Water Research, 2022
The recent discovery of comammox Nitrospira performing complete ammonia oxidation to nitrate has overturned the long-held dogma of two-step nitrification on Earth, yet little is known about the effect of urbanization interference on their distribution.
Shufeng Liu, Hetong Cai, Xiaohui Zhao, Zongzhi Wu, Qian Chen, Xuming Xu, Sining Zhong, Weiling Sun, Jinren Ni   +8 more
openaire   +2 more sources

Comammox bacterial abundance, activity, and contribution in agricultural rhizosphere soils

Science of The Total Environment, 2020
The newly identified complete ammonia oxidation (comammox), which is capable of oxidizing ammonia directly to nitrate, has complemented our knowledge of nitrification in the global nitrogen (N) cycle. However, understanding the contribution and ecological roles of comammox in complex soil environments is still in its infancy.
Xiaomin Wang, Shanyun Wang, Yingying Jiang, Jiemin Zhou, Chang Han, Guibing Zhu   +5 more
openaire   +2 more sources

The long-term effects of using nitrite and urea on the enrichment of comammox bacteria

Science of The Total Environment, 2021
The discovery of complete ammonia oxidizer (comammox) was a breakthrough in the study of nitrification. However, slow growth of comammox bacteria makes it challenging to distinguish them from traditional ammonia oxidizing microorganisms. Genomic data indicated that comammox bacteria encoded genes that can metabolize urea and had higher nitrite ...
Yuxiang, Zhao, Jiajie, Hu, Weiling, Yang, Jiaqi, Wang, Zhongjun, Jia, Ping, Zheng, Baolan, Hu   +6 more
openaire   +2 more sources

Comammox Nitrospira clade B contributes to nitrification in soil

Soil Biology and Biochemistry, 2019
Abstract Comammox, one nitrifying microorganism carries out the complete oxidation of ammonia to nitrate, have been recently discovered, and are found in a wide range of environments, including soil. However, conditions under which they actually contribute to nitrification in soil have not yet been demonstrated.
Xia Zhu-Barker, Graeme W Nicol, Xianjun Jiang   +2 more
exaly   +4 more sources

Specific Micropollutant Biotransformation Pattern by the Comammox Bacterium Nitrospira inopinata

Environmental Science & Technology, 2019
The recently discovered complete ammonia-oxidizing (comammox) bacteria occur in various environments, including wastewater treatment plants. To better understand their role in micropollutant biotransformation in comparison with ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA), we investigated the biotransformation capability of ...
Ping Han, Yaochun Yu, Lijun Zhou, Zhenyu Tian, Zhong Li, Lijun Hou, Min Liu, Qinglong Wu, Michael Wagner, Yujie Men   +9 more
openaire   +4 more sources

The environmental detection of comammox Nitrospira

2017
Vor kurzem wurden die ersten Mikroorganismen entdeckt, die in der Lage sind Ammonium komplett zu Nitrat zu oxidieren (‘comammox’), und dadurch das Dogma, über die Arbeitsteilung in der Nitrifikation in zwei aufeinanderfolgenden Schritten, für ungültig erklärt.
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
openaire   +1 more source

Comammox and AOA responses to ammonia loading rate in oligotrophic environments

Water Research
Nitrification is a central process in the global nitrogen cycle, yet the ecological niches and growth strategies of ammonia-oxidizing microorganisms in oligotrophic environments remain poorly understood. To investigate the ecological responses of complete ammonia oxidizers (Comammox) and ammonia-oxidizing archaea (AOA), a membrane bioreactor (MBR ...
Run, Su, Litong, Shi, Yan, Wei, Bin, Ma
openaire   +2 more sources