Results 51 to 60 of about 4,412 (150)

Competition between Nitrospira spp. and Nitrobacter spp. in nitrite‐oxidizing bioreactors [PDF]

Biotechnology and Bioengineering, 2006
AbstractIn this work the question was addressed if in nitrite‐oxidizing activated sludge systems the environmental competition between Nitrobacter spp. and Nitrospira spp., which only recently has been discovered to play a role in these systems, is affected by the nitrite concentrations. Two parallel chemostats were inoculated with nitrifying‐activated
Nogueira, R., Melo, L. F.
openaire   +4 more sources

Competitive and substrate limited environments drive metabolic heterogeneity for comammox Nitrospira

ISME Communications, 2023
Abstract Nitrospira has been revealed as a high versatile genus. Although previously considered only responsible for the conversion of nitrite to nitrate, now we know that Nitrospira can perform complete ammonia oxidation to nitrate too (comammox).
Eloi Martinez-Rabert, Cindy J Smith, William T Sloan, Rebeca Gonzalez-Cabaleiro   +3 more
openaire   +2 more sources

Nitrification inhibitor chlorate and nitrogen substrates differentially affect comammox Nitrospira in a grassland soil

Frontiers in Microbiology
IntroductionThrough the combined use of two nitrification inhibitors, Dicyandiamide (DCD) and chlorate with nitrogen amendment, this study aimed to investigate the contribution of comammox Nitrospira clade B, ammonia oxidizing bacteria (AOB) and archaea (
Anish S. Shah, Pei-Chun Hsu, Chris Chisholm, Andriy Podolyan, Keith Cameron, Jiafa Luo, Roland Stenger, Sam Carrick, Wei Hu, Scott A. Ferguson, Wenhua Wei, Jupei Shen, Limei Zhang, Hongbin Liu, Tongke Zhao, Wenxue Wei, Weixin Ding, Hong Pan, Yimeng Liu, Bowen Li, Jianjun Du, Hong J. Di   +21 more
doaj   +1 more source

Spatial interaction of archaeal ammonia-oxidizers and nitrite-oxidizing bacteria in an unfertilized grassland soil

Frontiers in Microbiology, 2016
Interrelated successive transformation steps of nitrification are performed by distinct microbial groups – the ammonia-oxidizers, comprising ammonia-oxidizing archaea (AOA) and bacteria (AOB), and nitrite-oxidizers such as Nitrobacter and Nitrospira ...
Barbara eStempfhuber, Tim eRichter-Heitmann, Kathleen M. Regan, Angelika eKölbl, Pia eKaul, Sven eMarhan, Johannes eSikorski, Joerg eOvermann, Michael W. Friedrich, Ellen eKandeler, Michael eSchloter   +10 more
doaj   +1 more source

Metagenomic Evidence for the Presence of Comammox Nitrospira-Like Bacteria in a Drinking Water System

mSphere, 2016
We report metagenomic evidence for the presence of a Nitrospira-like organism with the metabolic potential to perform the complete oxidation of ammonia to nitrate (i.e., it is a complete ammonia oxidizer [comammox]) in a drinking water system.
Ameet J. Pinto, Daniel N. Marcus, Umer Zeeshan Ijaz, Quyen Melina Bautista-de lose Santos, Gregory J. Dick, Lutgarde Raskin   +5 more
doaj   +1 more source

Nitrogen source influences the interactions of comammox bacteria with aerobic nitrifiers

Microbiology Spectrum
While the co-existence of comammox Nitrospira with canonical nitrifiers is well documented in diverse ecosystems, there is still a dearth of knowledge about the mechanisms underpinning their interactions.
Katherine Jeanne Vilardi, Juliet Johnston, Zihan Dai, Irmarie Cotto, Erin Tuttle, Ariana Patterson, Aron Stubbins, Kelsey J. Pieper, Ameet J. Pinto   +8 more
doaj   +1 more source

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   +1 more source

A positive contribution to nitrogen removal by a novel NOB in a full-scale duck wastewater treatment system

Water Research X
Nitrite-oxidizing bacteria (NOB) are undesirable in the anaerobic ammonium oxidation (anammox)-driven nitrogen removal technologies in the modern wastewater treatment plants (WWTPs).
Pengfei Hu, Youfen Qian, Yanbin Xu, Adi Radian, Yuchun Yang, Ji-Dong Gu   +5 more
doaj   +1 more source

Conversion of coastal marsh to aquaculture ponds altered soil ammonia oxidiser community and decreased ammonia oxidation potential

Journal of Sustainable Agriculture and Environment
Introduction As a crucial component of the nitrogen cycle, ammonia oxidation in soil can be driven by canonical ammonia‐oxidising archaea (AOA) and bacteria, as well as complete ammonia oxidiser (CMX Nitrospira). Land use change can disrupt and alter the
Guiping Ye, Kam W. Tang, Xiao Lin, Ping Yang, Chuan Tong, Zi‐Yang He, Mengmeng Feng, Milin Deng, Yongxin Lin   +8 more
doaj   +1 more source

Exploring Suitable Nitrification Inhibitor in an Intensively Cultivated Greenhouse Soil and Its Effect on the Abundance and Community of Soil Ammonia Oxidizers

Agronomy
The application of nitrification inhibitors (NIs) is an effective way to reduce soil nitrogen (N) losses and increase crop N uptake. Yet, the efficacy of NIs commonly varies with dosages, crop systems and soil environmental conditions.
Xing Liu, Yanan Cheng, Ying Zhang, Fei Wang, Yonggang Li, Changwei Shen, Bihua Chen   +6 more
doaj   +1 more source