Nitrification inhibitors impose distinct effects on comammox bacteria and canonical ammonia oxidizers under high N fertilization regimes

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 199, P. 105417 - 105417

Published: April 20, 2024

The response of complete ammonia-oxidizing (comammox) bacteria to variable nitrogen (N) inputs and nitrification inhibitors (NIs) remains poorly understood. We conducted two experiments, in a soil where both clade A B comammox Nitrospira were present, identify the type (ammonium sulphate vs. urea) level N-fertilization (0–500 mg-N-kg‐1d.w. soil) that are conducive growth comammox, compared canonical microorganisms (AOM), subsequently assess their three commercial (DCD, nitrapyrin, DMPP) new potent (ethoxyquin) NI under these favourable N fertilization regimes. highest concentration ammonium stimulated AOM which showed dose-dependent increase by sources. DMPP primarily, DCD, imposed more persistent inhibition on than nitrapyrin ethoxyquin, result did not concur with persistence NIs (DMPP was least among NIs) but mostly driven selective inhibitory activity (AOB) prevailed studied soil. AOB DCD complemented proliferation archaea (AOA). induced significant changes communities. Comammox enriched depleted ethoxyquin. (i) releasing AOA from competition allows them proliferate efficiently, even high inorganic conditions; (ii) responsive input NIs.

Language: Английский

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Comammox Nitrospira dominates the nitrifying bacterial community in the external canister biofilter in the tank fish farm

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107494 - 107494

Published: March 20, 2025

Language: Английский

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Transcriptome analysis of the degradation process of organic nitrogen by two heterotrophic nitrifying and aerobic denitrifying bacteria

Archives of Microbiology, Journal Year: 2024, Volume and Issue: 206(8)

Published: July 15, 2024

Language: Английский

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Network of Nitrifying Bacteria in Aquarium Biofilters: An Unfaltering Cooperation Between Comammox Nitrospira and Ammonia-Oxidizing Archaea

Water, Journal Year: 2024, Volume and Issue: 17(1), P. 52 - 52

Published: Dec. 28, 2024

Nitrification plays a crucial role in aquatic ecosystems and the biofilters used fish farms. Despite their importance, of canonical nitrifiers, comammox bacteria, archaea has not yet been sufficiently investigated. The aim this study was to characterize microbiome external canister biofilter freshwater aquarium, with particular focus on Nitrospira competition other nitrifiers. To achieve this, comprehensive approach combining metagenome sequencing co-occurrence network analysis interactions between microorganisms portable biofilter. were subjected changing feeding regime that affected ecological relationships abundance different microbial taxa. results showed presence two types nitrifiers biofilter: ammonia-oxidizing (AOA). Five genomes reconstructed, clade B being most abundant an average 7.8 ± 0.4%. In addition, families identified: Nitrosopumilaceae Nitrososphaeraceae, 4.3 Heterotrophs also bacterial community, particularly genera Actinomycetota, Planctomycetota, Pseudomonadota. Network indicated competitive heterotrophs, whereas no observed AOA. predominance Nitrospira, AOA over emphasizes better adaptation oligotrophic environments. This highlights importance within interaction networks, which can contribute optimization water purification systems RASs.

Language: Английский

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Effect of long-term ammonia deficiency on nitrification performance and microbial dynamics in downflow sponge biofilm reactor

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 481, P. 144168 - 144168

Published: Nov. 1, 2024

Language: Английский

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