Results 21 to 30 of about 4,455 (169)

Genomic and Physiological Characteristics of a Novel Nitrite-Oxidizing Nitrospira Strain Isolated From a Drinking Water Treatment Plant

Frontiers in Microbiology, 2020
Nitrite-oxidizing bacteria (NOB) catalyze the second step of nitrification, which is an important process of the biogeochemical nitrogen cycle and is exploited extensively as a biological nitrogen removal process.
Hirotsugu Fujitani, Hirotsugu Fujitani, Kengo Momiuchi, Kento Ishii, Manami Nomachi, Shuta Kikuchi, Norisuke Ushiki, Yuji Sekiguchi, Satoshi Tsuneda, Satoshi Tsuneda   +9 more
doaj   +1 more source

Complete nitrification: insights into the ecophysiology of comammox Nitrospira [PDF]

Applied Microbiology and Biotechnology, 2018
Nitrification, the oxidation of ammonia via nitrite to nitrate, has been considered to be a stepwise process mediated by two distinct functional groups of microorganisms. The identification of complete nitrifying Nitrospira challenged not only the paradigm of labor division in nitrification, it also raises fundamental questions regarding the ...
Hanna Koch, Maartje A. H. J. van Kessel, Sebastian Lücker   +2 more
openaire   +4 more sources

Niche Differentiation of Comammox Nitrospira in the Mudflat and Reclaimed Agricultural Soils Along the North Branch of Yangtze River Estuary

Frontiers in Microbiology, 2021
The discovery of complete ammonia oxidation (comammox), oxidizing ammonia to nitrate via nitrite in a single organism, has redefined the traditional recognition of the two-step nitrification driven by two functional groups (ammonia-oxidizing and nitrite ...
Xinxin Wang, Xinxin Wang, Xinxin Wang, Lu Lu, Xue Zhou, Xiufeng Tang, Lu Kuang, Junhui Chen, Jun Shan, Huijie Lu, Hua Qin, Jonathan Adams, Baozhan Wang, Baozhan Wang   +13 more
doaj   +1 more source

Genomic profiling of Nitrospira species reveals ecological success of comammox Nitrospira [PDF]

, 2019
Abstract Nitrification was long thought to consist in the stepwise oxidation of ammonia to nitrite and of nitrite to nitrate by ammonia oxidizing and nitrite oxidizing microorganisms, respectively. Recently, single microorganisms capable of complete ammonia to nitrate oxidation (comammox) were identified in the
Palomo, Alejandro, Dechesne, Arnaud, Smets, Barth F.   +2 more
openaire   +1 more source

The occurrence and role of Nitrospira in nitrogen removal systems

Bioresource Technology, 2020
Application of the modern microbial techniques changed the paradigm about the microorganisms performing nitrification. Numerous investigations recognized representatives of the genus Nitrospira as a key and predominant nitrite-oxidizing bacteria in biological nutrient removal systems, especially under low dissolved oxygen and substrate conditions.
Mohamad-Javad Mehrani, Dominika Sobotka, Przemyslaw Kowal, Sławomir Ciesielski, Jacek Makinia   +4 more
openaire   +2 more sources

The Elbe Estuary Microbiome Shifts With Salinity and Discharge and Depends on Fresh Organic Matter and Nutrient Availability. [PDF]

Environ Microbiol Rep
Microbial diversity within the Elbe Estuary was found to be more strongly governed by seasonal variability, salinity, and discharge than by spatial heterogeneity. Oligohaline regions sustain high diversity, while nutrient and redox conditions drive functional shifts.
Russnak V, Koll R, Keuter S, Sanders T, Dähnke K.   +4 more
europepmc   +2 more sources

Genome-Enabled Insights into the Ecophysiology of the Comammox Bacterium “Candidatus Nitrospira nitrosa”

mSystems, 2017
The recently discovered comammox bacteria have the potential to completely oxidize ammonia to nitrate. These microorganisms are part of the Nitrospira genus and are present in a variety of environments, including biological nutrient removal (BNR) systems.
Pamela Y. Camejo, Jorge Santo Domingo, Katherine D. McMahon, Daniel R. Noguera   +3 more
doaj   +1 more source

The impact of fertilization on ammonia-oxidizing bacteria and comammox Nitrospira communities and the subsequent effect on N2O emission and maize yield in a semi-arid region

Frontiers in Microbiology, 2023
The control of nitrous oxide (N2O) emissions through nitrification and the optimization of maize yield are important in agricultural systems. However, within the semi-arid region, the impact of fertilization on the function of nitrification communities ...
Setor Kwami Fudjoe, Setor Kwami Fudjoe, Lingling Li, Lingling Li, Sumera Anwar, Shangli Shi, Junhong Xie, Junhong Xie, Frederick Kwame Yeboah, Linlin Wang, Linlin Wang   +10 more
doaj   +1 more source

Nutrient-Limited Enrichments of Nitrifiers From Soil Yield Consortia of Nitrosocosmicus-Affiliated AOA and Nitrospira-Affiliated NOB

Frontiers in Microbiology, 2021
The discovery of ammonia-oxidizing archaea (AOA) and complete ammonia-oxidizing (comammox) bacteria widespread in terrestrial ecosystems indicates an important role of these organisms in terrestrial nitrification.
Jonathan Rodriguez, Seemanti Chakrabarti, Eunkyung Choi, Nisreen Shehadeh, Samantha Sierra-Martinez, Jun Zhao, Willm Martens-Habbena   +6 more
doaj   +1 more source

Differential responses of canonical nitrifiers and comammox Nitrospira to long-term fertilization in an Alfisol of Northeast China

Frontiers in Microbiology, 2023
The newly identified complete ammonia oxidizer (comammox) that converts ammonia directly into nitrate has redefined the long-held paradigm of two-step nitrification mediated by two distinct groups of nitrifiers.
Yanan Wang, Xibai Zeng, Qiang Ma, Yang Zhang, Wantai Yu, Zhong Zheng, Nan Zhang, Liyang Xu   +7 more
doaj   +1 more source