ArticleEnvironmental microbiology2023
Rapid nitrification involving comammox and canonical Nitrospira at extreme pH in saline-alkaline lakes.
Article in Environmental microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Supplementation of plant fermentation carbon sources significantly enhances the abundance of ammonia-oxidizing genes and increases nitrogen removal in a municipal wastewater treatment plant.BMC microbiology · 2025Article
- Acid tolerance and metabolic potential of comammox and nitrite-oxidizingISME communications · 2025Article
- Ammonium-derived nitrous oxide is a global source in streams.Nature communications · 2024Article
- Investigating microbial and environmental drivers of nitrification in alkaline forest soil.ISME communications · 2024Article
- Nitrification in acidic and alkaline environments.Essays in biochemistry · 2023Review
- Rapid nitrification involving comammox and canonical Nitrospira at extreme pH in saline-alkaline lakes.Environmental microbiology · 2023Article
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Authors and funding
8 authors.
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Abstract
Nitrite-oxidizing bacteria (NOB) catalyse the second nitrification step and are the main biological source of nitrate. The most diverse and widespread NOB genus is Nitrospira, which also contains complete ammonia oxidizers (comammox) that oxidize ammonia to nitrate. To date, little is known about the occurrence and biology of comammox and canonical nitrite oxidizing Nitrospira in extremely alkaline environments. Here, we studied the seasonal distribution and diversity, and the effect of short-term pH changes on comammox and canonical Nitrospira in sediments of two saline, highly alkaline lakes. We identified diverse canonical and comammox Nitrospira clade A-like phylotypes as the only detectable NOB during more than a year, suggesting their major importance for nitrification in these habitats. Gross nitrification rates measured in microcosm incubations were highest at pH 10 and considerably faster than reported for other natural, aquatic environments. Nitrification could be attributed to canonical and comammox Nitrospira and to Nitrososphaerales ammonia-oxidizing archaea. Furthermore, our data suggested that comammox Nitrospira contributed to ammonia oxidation at an extremely alkaline pH of 11. These results identify saline, highly alkaline lake sediments as environments of uniquely strong nitrification with novel comammox Nitrospira as key microbial players.
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