Towards a more labor-saving way in microbial ammonium oxidation: A review on complete ammonia oxidization (comammox)

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 829, P. 154590 - 154590

Published: March 17, 2022

Language: Английский

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Effect of antibiotic perturbation on nitrous oxide emissions: An in-depth analysis

Critical Reviews in Environmental Science and Technology, Journal Year: 2024, Volume and Issue: 54(22), P. 1612 - 1632

Published: April 16, 2024

Agricultural practices such as extensive manure application (containing residual antibiotics) fertilizer can also contribute to antibiotic pollution in soil, besides nitrous oxide (N2O) emissions. This dual impact designates certain agricultural soils hotspots for heightened N2O emissions and pollution. Nevertheless, our understanding of the repercussions residues on underlying mechanisms remain elusive. comprehensive literature review investigated recent research findings regarding contamination its influence microbial production consumption. We scrutinized published data field experimental monitoring results analyze prevalence temporal variation Chinese soils. By analyzing 482 log response ratio (lnR) datasets obtained from 41 independent articles, we established that quinolones (QNs) significantly (p < 0.05) boost Conversely, cycloheximide aminoglycosides (ARs) demonstrated notable inhibitory effects. Antibiotic at concentrations within 1 ppm promoted soil emissions, whereas exceeding 10 (95% CI > 0) inhibited Subsequently, changes oxidation-related microorganisms (AOM), nitrite-oxidizing bacteria (NOB), comammox bacteria, denitrifying well dissimilatory nitrate reduction ammonium (DNRA) anammox processes under stress. Antibiotics unequally affect Our offer valuable insights into complex relationship between antibiotics contributing a better environmental consequences systems.

Language: Английский

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Ammonia-oxidizing archaea and complete ammonia-oxidizing Nitrospira in water treatment systems

Water Research X, Journal Year: 2022, Volume and Issue: 15, P. 100131 - 100131

Published: March 14, 2022

Nitrification, the oxidation of ammonia to nitrate via nitrite, is important for many engineered water treatment systems. The sequential steps this respiratory process are carried out by distinct microbial guilds, including ammonia-oxidizing bacteria (AOB) and archaea (AOA), nitrite-oxidizing (NOB), newly discovered members genus Nitrospira that conduct complete (comammox). Even though all these nitrifiers have been identified within systems, their relative contributions nitrogen cycling poorly understood. Although AOA contribute nitrification in wastewater plants, they generally outnumbered AOB. In contrast, comammox typically dominate relatively low environments such as drinking treatment, tertiary aquaculture/aquarium filtration. Studies focus on abundance oxidizers may misconstrue actual role nitrifying guilds play a system. Understanding which active useful further optimization systems rely removal. This review highlights known distributions suggests future research directions will help assess identify factors influence activity.

Language: Английский

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How to Provide Nitrite Robustly for Anaerobic Ammonium Oxidation in Mainstream Nitrogen Removal

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(51), P. 21503 - 21526

Published: Dec. 14, 2023

Innovation in decarbonizing wastewater treatment is urgent response to global climate change. The practical implementation of anaerobic ammonium oxidation (anammox) treating domestic the key reconciling carbon-neutral management with sustainable development. Nitrite availability prerequisite anammox reaction, but how achieve robust nitrite supply and accumulation for mainstream systems remains elusive. This work presents a state-of-the-art review on recent advances anammox, paying special attention available pathways (forward-going (from nitrite) backward-going nitrate nitrite)), controlling strategies, physiological ecological characteristics functional microorganisms involved supply. First, we comprehensively assessed nitrite-oxidizing bacteria control methods, outlining that these technologies are transitioning possessing multiple selective pressures (such as intermittent aeration membrane-aerated biological reactor), integrating side stream free ammonia/free nitrous acid suppression recirculated sludge treatment), maintaining high activity ammonia-oxidizing competing oxygen bacteria. We then highlight emerging strategies supply, including production driven by novel microbes (ammonia-oxidizing archaea complete ammonia bacteria) reduction (partial denitrification nitrate-dependent methane oxidation). resources requirement different analyzed, hybrid pathway combining partial nitrification encouraged. Moreover, data-driven modeling process well proactive microbiome proposed hope achieving application. Finally, existing challenges further perspectives highlighted, i.e., investigation nitrite-supplying bacteria, scaling-up from laboratory under real conditions, stable performance fundamental insights this aim inspire advance our understanding about provide robustly shed light important obstacles warranting settlement.

Language: Английский

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Hot spring distribution and survival mechanisms of thermophilic comammox Nitrospira

The ISME Journal, Journal Year: 2023, Volume and Issue: 17(7), P. 993 - 1003

Published: April 17, 2023

The recent discovery of Nitrospira species capable complete ammonia oxidation (comammox) in non-marine natural and engineered ecosystems under mesothermal conditions has changed our understanding microbial nitrification. However, little is known about the occurrence comammox bacteria or their ability to survive moderately thermal and/or hyperthermal habitats. Here, we report wide distribution five terrestrial hot springs at temperatures ranging from 36 80°C provide metagenome-assembled genomes 11 new strains. Interestingly, identification dissimilatory nitrate reduction ammonium (DNRA) thermophilic lineages suggests that they have versatile ecological functions as both sinks sources ammonia, contrast described mesophilic lineages, which lack DNRA pathway. Furthermore, situ expression key genes associated with nitrogen metabolism, adaptation, oxidative stress confirmed studied contribution nitrification these environments. Additionally, smaller genome size higher GC content, less polar more charged amino acids usage profiles, a large number heat shock proteins compared strains presumably confer tolerance stress. These novel insights into occurrence, metabolic activity, adaptation habitats further expand global significant implications for how unique microorganisms evolved strategies.

Language: Английский

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Complete ammonia oxidization in agricultural soils: High ammonia fertilizer loss but low N₂O production

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(7), P. 1984 - 1997

Published: Jan. 6, 2023

The contribution of agriculture to the sustainable development goals requires climate-smart and profitable farm innovations. Increasing ammonia fertilizer applications meet global food demands results in high agricultural costs, environmental quality deterioration, warming, without a significant increase crop yield. Here, we reported that third microbial oxidation process, complete (comammox), is contributing loss (41.9 ± 4.8%) at rate 3.53 0.55 mg N kg-1 day-1 soils around world. comammox loss, occurring mainly surface soil profiles (0-0.2 m), was equivalent bacterial (48.6 4.5%); both processes were significantly more important than archaeal (9.5 3.6%). In contrast, produced less N2 O (0.98 0.44 μg , 11.7 3.1%), comparable by (16.4 4.4%) but lower (72.0 5.1%). efficiency conversion (0.02 0.01%) evidently (0.24 0.06%) (0.16 0.04%) oxidation. increased with increasing pH values, which only physicochemical characteristic influenced abundance rates. Ammonia dominated oxidation, intense >6.5 <6.5. Our revealed plays vital role agroecosystems have been previously overlooked for long term.

Language: Английский

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Updated Virophage Taxonomy and Distinction from Polinton-like Viruses

Biomolecules, Journal Year: 2023, Volume and Issue: 13(2), P. 204 - 204

Published: Jan. 19, 2023

Virophages are small dsDNA viruses that hijack the machinery of giant during co-infection a protist (i.e., microeukaryotic) host and represent an exceptional case “hyperparasitism” in viral world. While only handful virophages have been isolated, vast diversity virophage-like sequences uncovered from diverse metagenomes. Their wide ecological distribution, idiosyncratic infection replication strategy, ability to integrate into virus genomes potential role antiviral defense made topic broad interest. However, one limitation for further studies is lack clarity regarding nomenclature taxonomy this group viruses. Specifically, linked literature other “virophage-like” mobile genetic elements viruses, including polinton-like (PLVs), but there no formal demarcation criteria proper either group, i.e., virophage or PLVs. Here, as part ICTV Virophage Study Group, we leverage large set gathered published datasets well newly generated propose delineation classification methods at multiple taxonomic ranks ‘sensu stricto’, related prototype isolates Sputnik mavirus. Based on combination comparative genomics phylogenetic analyses, show forms cohesive taxon establish class level suggest subdivision four orders seven families with distinctive ecogenomic features. Finally, illustrate how proposed method would be used, apply these two recently datasets, which include both virophage-related elements. Overall, see necessary first step provide robust framework area virosphere, will need expanded future cover such

Language: Английский

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Complete ammonia oxidation (comammox) at pH 3-4 supports stable production of ammonium nitrate from urine

Water Research, Journal Year: 2024, Volume and Issue: 257, P. 121686 - 121686

Published: April 28, 2024

This study developed a new process that stably produced ammonium nitrate (NH

Language: Английский

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A critical review of comammox and synergistic nitrogen removal coupling anammox: Mechanisms and regulatory strategies

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 948, P. 174855 - 174855

Published: July 20, 2024

Language: Английский

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Comammox activity dominates nitrification process in the sediments of plateau wetland

Water Research, Journal Year: 2021, Volume and Issue: 206, P. 117774 - 117774

Published: Oct. 18, 2021

Language: Английский

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