Results 1 to 10 of about 163 (120)

Comammox bacteria and ammonia oxidizing archaea are major drivers of nitrification in glacier forelands

Geoderma, 2023
This study investigated the abundance of comammox bacteria and canonical ammonia-oxidizing bacteria (AOB) and archaea (AOA), and their relative contribution to nitrification along a chronosequence of deglaciated forelands.
Hanxia Yu, Jupei Shen, Jun Zeng, Hang-Wei Hu, Elise Pendall, Haoyan Xiao, Zikai Liu, Hui Zhang, Hong J. Di, Zhongqin Li, Ji-Zheng He   +10 more
doaj   +5 more sources

Community composition and abundance of complete ammonia oxidation (comammox) bacteria in the Lancang River cascade reservoir

Ecotoxicology and Environmental Safety, 2023
The construction of the reservoir has changed the nitrogen migration and transformation processes in the river, and a large amount of sediment deposition in the reservoir may also lead to the spatial differentiation of complete ammonia oxidation ...
Hang Ding, Jiahui Zhang, Yuchun Wang, Mingming Hu, Jie Wen, Shanze Li, Yufei Bao, Jianwei Zhao   +7 more
doaj   +5 more sources

Occurrence and Roles of Comammox Bacteria in Water and Wastewater Treatment Systems: A Critical Review

Engineering, 2022
Nitrogen removal is a critical process in water treatment plants (WTPs) and wastewater treatment plants (WWTPs). The recent discovery of a novel bacterial process, complete ammonia oxidation (comammox, CMX), has refuted a century-long perception of the ...
Naga Raju Maddela, Zhihao Gan, Yabing Meng, Fuqiang Fan, Fangang Meng   +4 more
doaj   +4 more sources

Comammox Nitrospira abundance and contribution to nitrification in a forested landscape

Ecosphere
Nitrification in terrestrial ecosystems is mediated by NH4+‐oxidizing bacteria (AOB) and archaea (AOA). Presently, we understand relatively little about how physiological capacities and environmental tolerances influence their community composition, and ...
Donald R. Zak, Rima A. Upchurch
doaj   +2 more sources

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

Photoinhibition of comammox reaction in Nitrospira inopinata in a dose- and wavelength-dependent manner

Frontiers in Microbiology, 2022
Apparent contribution of complete ammonia-oxidizing organisms (comammox) to the global nitrogen cycle highlights the necessity for understanding niche differentiation of comammox bacteria among other ammonia oxidizers. While the high affinity for ammonia
Ekaterina Y. Gottshall, Bruce Godfrey, Bo Li, Britt Abrahamson, Wei Qin, Mari Winkler   +5 more
doaj   +1 more source

Variation, distribution, and diversity of canonical ammonia-oxidizing microorganisms and complete-nitrifying bacteria in highly contaminated ecological restoration regions in the Siding mine area

Ecotoxicology and Environmental Safety, 2021
Canonical ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB) and complete-nitrifying bacteria (comammox) exist in a variety of ecosystems.
Yi Li, Ying Liang, Haichun Zhang, Yuan Liu, Jing Zhu, Jie Xu, Zhenming Zhou, Jiangming Ma, Kehui Liu, Fangming Yu   +9 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

Salinity changes the nitrification activity and community composition of comammox Nitrospira in intertidal sediments of Yangtze River estuary

mSystems, 2023
The newly discovered complete ammonia-oxidizing (comammox) Nitrospira has been identified in different environments, including coastal environments, where salinity is one of the most important factors for the abundance and activity of nitrifiers.
Ran Jiang, Wen-Jing Qin, Ru-Yi Zhang, Kai Zhang, Xing Huang, Yong Li, Chen-Hao Zhou, Ting Zhu, Yan Zhang, Bin Zou, Ming Nie, Sung-Keun Rhee, Zhe-Xue Quan   +12 more
doaj   +1 more source

Cyclic Conversions in the Nitrogen Cycle

Frontiers in Microbiology, 2021
The cyclic nature of specific conversions in the nitrogen cycle imposes strict limitations to the conversions observed in nature and explains for example why anaerobic ammonium oxidation (anammox) bacteria can only use nitrite – and not nitrate – as ...
Robbert Kleerebezem, Sebastian Lücker
doaj   +1 more source