ArticleThe ISME journal2024
Heterotrophic nitrification by Alcaligenes faecalis links organic and inorganic nitrogen metabolism.
Article in The ISME journal, 2024. 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.
- Molecular Characterization of Plant Growth-Promoting Bacteria Associated withMicroorganisms · 2026Article
- Unlocking genome engineering inMicrobiology spectrum · 2026Article
- No evidence for the putative nitric oxide sensor NsrR as a key regulator of magnetosome formation in Magnetospirillum gryphiswaldense.Nucleic acids research · 2026Article
- Construction of RecombinantMicroorganisms · 2025Article
- Heterotrophic ammonia oxidation bymLife · 2025Article
- Acetone-mediated ammonium oxidation to dinitrogen by Zobellella taiwanensis bacteria.The ISME journal · 2025Article
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Authors and funding
8 authors.
Funding
Abstract
Heterotrophic nitrification remains a mystery for decades. It has been commonly hypothesized that heterotrophic nitrifiers oxidize ammonia to hydroxylamine and then to nitrite in a way similar to autotrophic AOA and AOB. Recently, heterotrophic nitrifiers from Alcaligenes were found to oxidize ammonia to hydroxylamine and then to N2 ("dirammox", direct ammonia oxidation) by the gene cluster dnfABC with a yet-to-be-reported mechanism. The role of a potential glutamine amidotransferase DnfC clues the heterotrophic ammonia oxidation might involving in glutamine. Here, we found Alcaligenes faecalis JQ135 could oxidize amino acids besides ammonia. We discovered that glutamine is an intermediate of the dirammox pathway and the glutamine synthetase gene glnA is essential for both A. faecalis JQ135 and the Escherichia coli cells harboring dnfABC gene cluster to oxidize amino acids and ammonia. Our study expands understanding of heterotrophic nitrifiers and challenges the classical paradigm of heterotrophic nitrification.
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