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

The Science of The Total Environment, Год журнала: 2022, Номер 829, С. 154590 - 154590

Опубликована: Март 17, 2022

Язык: Английский

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Nitrogen transformations

Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 407 - 438

Опубликована: Янв. 1, 2024

Язык: Английский

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Abundance and Functional Importance of Complete Ammonia Oxidizers and Other Nitrifiers in a Riparian Ecosystem

Environmental Science & Technology, Год журнала: 2021, Номер 55(8), С. 4573 - 4584

Опубликована: Март 18, 2021

The discovery of complete ammonia oxidation (comammox) has altered our understanding nitrification, which is the rate-limiting process in global nitrogen cycle. However, ecological role comammox or its contribution to nitrification both natural and artificial ecosystems still infancy. Here, we investigated community distribution function bacteria riparian analyzed interactions between other cycling microorganisms. bacterial abundance rate were higher summer than winter nonrhizosphere soils rhizosphere. Fringe zone comprise a hotspot, where (2.58 × 108 copies g–1) (0.86 mg N kg–1 d–1) not only at sampling sites but also those processes. correlated significantly positively with relative species Candidatus Nitrospira nitrificans that nitrosa. Analysis interaction ammonia-oxidizing processes revealed archaea dominate interface soils, fringe anaerobic ammonium (anammox) sediments zone. These results indicate may constitute an important currently underestimated microbial ecosystems.

Язык: Английский

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The contribution of ammonia-oxidizing archaea and bacteria to gross nitrification under different substrate availability

Soil Biology and Biochemistry, Год журнала: 2021, Номер 160, С. 108353 - 108353

Опубликована: Июль 4, 2021

The first step of autotrophic nitrification is performed by ammonia-oxidizing archaea (AOA) and bacteria (AOB). Recent studies show that their relative contributions are determined the substrate sources availability, yet evidence provided quantification respective gross activities in soil lacking. Here, we conducted a microcosm study with agricultural high (50 μg N g−1) low (5 ammonium application, quantified rates using 15N-tracers. AOA AOB were distinguished bacterial inhibitor 1-octyne acetylene, which inhibits both AOB. Under supply, contributed equally to ammonia oxidation, but outcompeted under higher supply. These results provide direct availability affects contribution nitrification.

Язык: Английский

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Cometabolic biodegradation of antibiotics by ammonia oxidizing microorganisms during wastewater treatment processes

Journal of Environmental Management, Год журнала: 2021, Номер 305, С. 114336 - 114336

Опубликована: Дек. 23, 2021

Язык: Английский

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Niche specialization of comammox Nitrospira in terrestrial ecosystems: Oligotrophic or copiotrophic?

Critical Reviews in Environmental Science and Technology, Год журнала: 2022, Номер 53(2), С. 161 - 176

Опубликована: Март 20, 2022

The discovery of complete ammonia oxidizers, comammox Nitrospira, represents a breakthrough in the history nitrification research. Nitrospira inopinata, which was obtained from an aquatic ecosystem, is only pure bacterial isolate reported so far. Ammonia oxidation kinetics N. inopinata indicated that they prefer oligotrophic lifestyle and may directly compete with ammonia-oxidizing archaea (AOA), but representatives terrestrial ecosystems are lacking. Current studies demonstrate functionally dominant separated most sequences engineering systems. Clades A B seemingly have different ecological preferences soils, possibly due to their ammonium uptake Analyses evolutionary indicate some genes involved could be laterally transferred β-ammonia-oxidizing bacteria (AOB). Some species similar AOB active niches where previously considered dominated by AOB. Taken together, this review summarizes recent findings biogeographical distribution preference large-scale soil surveys, responses nitrogen application soil, putative mechanisms underpinning niche Nitrospira. These suggest not strictly both copiotrophic broader breadth. Comammox abundant environments. profoundly expanded our knowledge environmental relative contribution soils.

Язык: Английский

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Genomic profiling of Nitrospira species reveals ecological success of comammox Nitrospira

Microbiome, Год журнала: 2022, Номер 10(1)

Опубликована: Ноя. 30, 2022

Abstract Background The discovery of microorganisms capable complete ammonia oxidation to nitrate (comammox) has prompted a paradigm shift in our understanding nitrification, an essential process N cycling, hitherto considered require both oxidizing and nitrite microorganisms. This intriguing metabolism is unique the genus Nitrospira , diverse taxon previously known only contain canonical oxidizers. Comammox have been detected environments; however, global view distribution, abundance, diversity species still incomplete. Results In this study, we retrieved 55 metagenome-assembled genomes (MAGs) from newly obtained publicly available metagenomes. Combined with MAGs, constitutes largest genome database date 205 representing 132 putative species, most without cultivated representatives. Mapping metagenomic sequencing reads various environments against enabled analysis distribution habitat preferences species. ’s ecological success evident as they outnumber present higher species-level richness than all examined, except for marine wastewaters samples. type environment governs large-scale biogeographical signal. We found that closely related tend occupy same habitats, phylogenetic signal preference stronger . eco-evolutionary history more complex, subclades achieving rapid niche divergence via horizontal transfer genes, including gene encoding hydroxylamine oxidoreductase, key enzyme nitrification. Conclusions Our study expands genomic inventory genus, exposes oxidizers within wide range identifies (sub)lineages comammox proposes genes involved nitrification linked separation sublineage Nitrospira.

Язык: Английский

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Chlorate as a comammox Nitrospira specific inhibitor reveals nitrification and N2O production activity in coastal wetland

Soil Biology and Biochemistry, Год журнала: 2022, Номер 173, С. 108782 - 108782

Опубликована: Июль 30, 2022

Язык: Английский

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Comammox activity dominates nitrification process in the sediments of plateau wetland

Water Research, Год журнала: 2021, Номер 206, С. 117774 - 117774

Опубликована: Окт. 18, 2021

Язык: Английский

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Nitrification is a minor source of nitrous oxide (N₂O) in an agricultural landscape and declines with increasing management intensity

Global Change Biology, Год журнала: 2021, Номер 27(21), С. 5599 - 5613

Опубликована: Авг. 12, 2021

The long-term contribution of nitrification to nitrous oxide (N2 O) emissions from terrestrial ecosystems is poorly known and thus constrained in biogeochemical models. Here, using Bayesian inference couple 25 years situ N2 O flux measurements with site-specific Michaelis-Menten kinetics nitrification-derived O, we test the relative importance across six cropped unmanaged along a management intensity gradient U.S. Midwest. We found that maximum potential fluxes was 13%-17% conventionally fertilized annual cropping system, 27%-42% low-input cover-cropped 52%-63% perennial systems including late successional deciduous forest. Actual values are likely be <10% these because low yields cultured nitrifiers (typically 0.04%-8% NH3 oxidized) competing sinks for available NH4+ situ. Most produced by ammonia-oxidizing bacteria rather than archaea, who appeared responsible no more 30% production all but one ecosystem. Although proportion lowest systems, nevertheless (higher Vmax ) ecosystems. conclude minor other sources examined.

Язык: Английский

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