Results 41 to 50 of about 1,348 (145)
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
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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
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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
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Design and Assessment of Species-Level qPCR Primers Targeting Comammox
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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Water ResearchThis study developed a new process that stably produced ammonium nitrate (NH4NO3), an important and commonly used fertilizer, from the source-separated urine by comammox Nitrospira.
Junhao Pan +6 more
semanticscholar +1 more source
Hydrological and microbial dynamics in an Arctic wastewater infiltration system
Vadose Zone Journal, Volume 25, Issue 2, March/April 2026.Abstract Passive wastewater treatment systems are widely used in the Arctic, but studies addressing the vadose zone dynamics that influence the operation and performance of subsurface or soil‐based infiltration systems, such as rapid infiltration basins, are rare.
Débora Boratto +6 more
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Enrichment of Comammox and Nitrite-Oxidizing Nitrospira From Acidic Soils
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
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Acidification Stimulates N2O Production by Oceanic Nitrifying Bacteria
Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 3, March 2026.Abstract Recent studies have shown changes in the production rates of nitrous oxide (N2O) in aerobic seawater in response to ocean acidification (OA). Understanding how N2O production responds to OA is crucial because N2O is a strong greenhouse gas and stratospheric ozone‐depleting substance emitted from the ocean.
Sakae Toyoda +5 more
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Unveiling Global Diversity of Patescibacteriota and Functional Interactions with Host Microbes
Advanced Science, Volume 13, Issue 11, 23 February 2026.Patescibacteriota represents a diverse group of ultra‐small epibiotic bacteria, which is largely overlooked. By integrating ribosomal protein S3‐based community profiling with MAG‐based metabolic potential analyses, this study provides new insights into their distribution, diversity, and potential interactions with other bacteria across diverse ...
Yanhan Ji +12 more
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Frontiers in Microbiology, 2023 The partial nitritation-anaerobic ammonium oxidation (anammox; PN-A) process has been considered a sustainable method for wastewater ammonium removal, with recent attempts to treat low-strength wastewater.
Yung-Hsien Shao +3 more
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