Comammox Nitrospira Clade B is the most abundant complete ammonia oxidizer in a dairy pasture soil and inhibited by dicyandiamide and high ammonium concentrations [PDF]
Frontiers in Microbiology, 2022 The recent discovery of comammox Nitrospira, a complete ammonia oxidizer, capable of completing the nitrification on their own has presented tremendous challenges to our understanding of the nitrification process.
Pei-Chun (Lisa) Hsu +19 more
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Unusual Plastoquinones in Non-Phototrophic Nitrifying Bacteria. [PDF]
Environ Microbiol RepChemolithoautotrophic nitrifying bacteria of the genus Nitrospira exclusively possess unusual methyl‐plastoquinones with a standard redox potential below that of canonical plastoquinone and ubiquinone, suggesting functional roles in bidirectional electron transport.
Bale NJ +13 more
europepmc +6 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 +11 more
doaj +3 more sources
Evolutionary Ecology of Natural Comammox Nitrospira Populations [PDF]
mSystems, 2022 Microbes commonly exist in diverse and complex communities where species interact, and their genomic repertoires evolve over time. Our understanding of species interaction and evolution has increased during the last decades, but most studies of ...
Alejandro Palomo +3 more
doaj +4 more sources
Design and Assessment of Species-Level qPCR Primers Targeting Comammox [PDF]
Frontiers in Microbiology, 2019 Published PCR primers targeting the ammonia monooxygenase gene (amoA) were applied to samples from activated sludge systems operated with low dissolved oxygen (DO) to quantify total and clade-level Nitrospira that perform complete ammonium oxidation ...
Natalie K. Beach, Daniel R. Noguera
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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 +6 more
doaj +3 more sources
Comammox Nitrospira abundance and contribution to nitrification in a forested landscape
EcosphereNitrification 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
Metagenomic recovery of two distinct comammox Nitrospira from the terrestrial subsurface [PDF]
Environmental Microbiology, 2019 Contains fulltext : 205810pub.pdf (publisher's version ) (Open Access)Summary The recently discovered comammox process encompasses both nitrification steps, the aerobic oxidation of ammonia and nitrite, in a single organism.
Banfield, Jillian F. +7 more
core +8 more sources
Genomic profiling of Nitrospira species reveals ecological success of comammox Nitrospira
Microbiome, 2022 Background The discovery of microorganisms capable of complete ammonia oxidation to nitrate (comammox) has prompted a paradigm shift in our understanding of nitrification, an essential process in N cycling, hitherto considered to require both ammonia ...
Alejandro Palomo +3 more
doaj +4 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