Results 1 to 10 of about 13,062 (232)

Complete nitrification by Nitrospira bacteria [PDF]

Nature, 2015
Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be a two-step process catalysed by chemolithoautotrophic microorganisms oxidizing either ammonia or nitrite. No known nitrifier carries out both steps, although
Holger Daims, Petra Pjevac, Ping Han
exaly   +5 more sources

Comammox Nitrospira act as key bacteria in weakly acidic soil via potential cobalamin sharing [PDF]

iMeta
The discovery of comammox Nitrospira in low pH environments has reshaped the ammonia oxidation process in acidic settings, providing a plausible explanation for the higher nitrification rates observed in weakly acidic soils.
Yuxiang Zhao, Jiajie Hu, Jiaqi Wang, Xiangwu Yao, Tong Zhang, Baolan Hu   +5 more
doaj   +3 more sources

Enrichment of Comammox and Nitrite-Oxidizing Nitrospira From Acidic Soils [PDF]

Frontiers in Microbiology, 2020
In agricultural soils fertilized with a high amount of ammonium nitrogen, the pH decreases because of the oxidation of ammonia by nitrifiers. Molecular-based analyses have revealed that members of the genus Nitrospira dominate over other nitrifiers in ...
Yu Takahashi, Hirotsugu Fujitani, Yuhei Hirono, Kanako Tago, Yong Wang, Masahito Hayatsu, Satoshi Tsuneda   +6 more
doaj   +5 more sources

Distribution and Diversity of Comammox Nitrospira in Coastal Wetlands of China [PDF]

Frontiers in Microbiology, 2020
Complete ammonia oxidizers (comammox), able to individually oxidize ammonia to nitrate, are considered to play a significant role in the global nitrogen cycle.
Dongyao Sun, Xiufeng Tang, Mengyue Zhao, Zongxiao Zhang, Lijun Hou, Min Liu, Min Liu, Baozhan Wang, Uli Klümper, Ping Han, Ping Han, Ping Han   +11 more
doaj   +5 more sources

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   +2 more sources

Potential survival strategies of novel comammox and nitrite-oxidizing Nitrospira synthesizing osmoprotectants in a wastewater microbiome treating high-ammonia brackish landfill leachate [PDF]

Microbiome
Background In the late stages of landfill operation, leachate becomes brackish and contains high concentrations of ammonia with limited organic carbon.
Shohei Yasuda, Alejandro Palomo, Barth F. Smets, Akihiko Terada   +3 more
doaj   +2 more sources

Community Structure, Assembly and Interactions of Nitrospira Nitrite-Oxidizing Bacteria in Sediments of the Eastern China Marginal Seas [PDF]

Microorganisms
Nitrite oxidation, a pivotal process in the nitrogen cycle driven by microorganisms, is primarily carried out by nitrite-oxidizing bacteria (NOB). While extensive studies on Nitrospira have been conducted in terrestrial habitats, knowledge of Nitrospira ...
Hao Dong, Hui He, Min Wang
doaj   +2 more sources

An investigation of Nitrospira bacteria in coastal wetlands of China: distribution pattern and related environmental driving factors

Frontiers in Marine Science, 2023
Nitrate is mainly converted via aerobic nitrite oxidation during the second step of nitrification, which is catalyzed by nitrite-oxidizing bacteria (NOB) and the recently discovery complete ammonia oxidizers (comammox).
Qiang Zhao, Dongyao Sun, Dongyao Sun, Xiufeng Tang, Lijun Hou, Min Liu, Ping Han, Ping Han, Ping Han   +8 more
doaj   +2 more sources

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   +2 more sources

Unraveling the important role of comammox Nitrospira to nitrification in the coastal aquaculture system

Frontiers in Microbiology
Increasing nitrogen (N) input to coastal ecosystems poses a serious environmental threat. It is important to understand the responses and feedback of N removal microbial communities, particularly nitrifiers including the newly recognized complete ammonia-
Xueqin Yang, Yongjie Wu, Longfei Shu, Hang Gu, Fei Liu, Jijuan Ding, Jiaxiong Zeng, Cheng Wang, Zhili He, Zhili He, Meiying Xu, Feifei Liu, Xiafei Zheng, Bo Wu   +13 more
doaj   +2 more sources