Results 11 to 20 of about 1,784 (205)
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 +10 more
doaj +5 more sources
Metagenomic Evidence for the Presence of Comammox
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 +5 more
doaj +7 more sources
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 +7 more
doaj +3 more sources
Low diversity and microdiversity of comammox bacteria in wastewater systems suggest specific adaptations within the Ca. Nitrospira nitrosa cluster [PDF]
Water Research, 2023 Studies have found Ca. Nitrospira nitrosa-like bacteria to be the principal or sole comammox bacteria in nitrogen removal systems for wastewater treatment. In contrast, multiple populations of strict ammonia and nitrite oxidizers co-exist in similar systems.
Irmarie Cotto +10 more
openaire +5 more sources
Nitrogen Kinetic Isotope Effects of Nitrification by the Complete Ammonia Oxidizer Nitrospira inopinata [PDF]
mSphere, 2021 Analysis of nitrogen isotope fractionation effects is useful for tracing biogeochemical nitrogen cycle processes. Nitrification can cause large nitrogen isotope effects through the enzymatic oxidation of ammonia (NH3) via nitrite (NO2−) to nitrate (NO3−)
Shurong Liu +5 more
doaj +3 more sources
Science of The Total Environment, 2022 Complete ammonia oxidizing (comammox) bacteria are frequently detected in wastewater biological nutrient removal (BNR) systems. This study identified "Candidatus Nitrospira nitrosa"-like comammox bacteria as the predominant ammonia oxidizers (97.5-99.4%) in a lab-scale BNR system with acetate and sludge fermentation liquid as external carbon sources ...
Xu, Shaoyi +5 more
openaire +5 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]
MicrobiomeBackground In the late stages of landfill operation, leachate becomes brackish and contains high concentrations of ammonia with limited organic carbon.
Yasuda S, Palomo A, Smets BF, Terada A.
europepmc +2 more sources
Arbuscular mycorrhiza suppresses microbial abundance, and particularly that of ammonia oxidizing bacteria, in agricultural soils. [PDF]
Front MicrobiolInteractions between arbuscular mycorrhizal (AM) fungi and ammonia-oxidizing (AO) microorganisms, two important microbial guilds contributing to soil-plant mineral nutrient cycling, are complex, given the high variability of soil biological, physical ...
Sun D +8 more
europepmc +2 more sources
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 +4 more
doaj +2 more sources
Soil Biology and Biochemistry, 2020 Abstract Forest disturbance increases soil nitrification rates in temperate ecosystems, but little is understood regarding contributions of newly discovered complete ammonia-oxidizing bacteria (i.e., comammox) to this important ecosystem process. We sampled soils across eight historically disturbed and adjacent reference forested watersheds at the ...
Ernest D. Osburn, J.E. Barrett
openaire +4 more sources