Ammonia oxidizing bacteria dominate soil nitrification under different fertilization regimes in black soils of northeast China

European Journal of Soil Biology, Год журнала: 2022, Номер 111, С. 103410 - 103410

Опубликована: Май 11, 2022

Язык: Английский

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Competition between ammonia-oxidizing archaea and complete ammonia oxidizers from freshwater environments

Applied and Environmental Microbiology, Год журнала: 2024, Номер unknown

Опубликована: Фев. 13, 2024

Nitrification is a key process in the global nitrogen cycle. Aerobic ammonia oxidizers play central role cycle by performing first step of nitrification. Ammonia-oxidizing archaea (AOA) and complete (comammox) are dominant nitrifiers environments with low ammonium availability. While AOA have been studied for almost 20 years, comammox were only discovered 8 years ago. Until now, there has gap our understanding whether can co-exist or if one strain would be under ammonium-limiting conditions. Here, we present study characterizing competition between freshwater varying substrate concentrations. Our results will help elucidating niches two lakes.

Язык: Английский

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Unraveling the important role of comammox Nitrospira to nitrification in the coastal aquaculture system

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Апрель 23, 2024

Increasing nitrogen (N) input to coastal ecosystems poses a serious environmental threat. It is important understand the responses and feedback of N removal microbial communities, particularly nitrifiers including newly recognized complete ammonia-oxidizers (comammox), improve aquaculture sustainability. In this study, we conducted holistic evaluation functional communities responsible for nitrification by quantifying sequencing key genes comammox Nitrospira-amoA, AOA-amoA, AOB-amoA Nitrospira-nxrB in fish ponds with different feeding levels evaluated contribution process through experiments mixing pure cultures. We found that higher dramatically increased N-related concentration, affecting nitrifying communities. Compared AOA AOB, Nitrospira NOB were more sensitive changes. Unexpectedly, detected an equivalent abundance AOB observed increase proportion clade A feeding. Furthermore, simplified network shift keystone species from fish-feeding ponds. Random forest analysis suggested community played critical role eutrophic (40–70 μM). Through additional experiment cultures, primary contributor at 200 μM ammonium. These results advance our understanding highlight importance driving systems.

Язык: Английский

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Journey of the swift nitrogen transformation: Unveiling comammox from discovery to deep understanding

Chemosphere, Год журнала: 2024, Номер 358, С. 142093 - 142093

Опубликована: Апрель 26, 2024

Язык: Английский

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Evidence of comammox bacteria playing a dominant role in Lake Taihu sediments based on metagenomic analysis

International Biodeterioration & Biodegradation, Год журнала: 2024, Номер 193, С. 105846 - 105846

Опубликована: Июнь 27, 2024

Язык: Английский

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