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Cited by 2,381

The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.

Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean

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Francis, Christopher A., Roberts, Kathryn J., Beman, J. Michael, Santoro, Alyson E., Oakley, Brian B.·2005·Proceedings of the National Academy of Sciences

Abstract

Nitrification, the microbial oxidation of ammonia to nitrite and nitrate, occurs in a wide variety of environments and plays a central role in the global nitrogen cycle. Catalyzed by the enzyme ammonia monooxygenase, the ability to oxidize ammonia was previously thought to be restricted to a few groups within the β- and γ- Proteobacteria . However, recent metagenomic studies have revealed the existence of unique ammonia monooxygenase α-subunit (amoA) genes derived from uncultivated, nonextremophilic Crenarchaeota. Here, we report molecular evidence for the widespread presence of ammonia-oxidizing archaea (AOA) in marine water columns and sediments. Using PCR primers designed to specifically target archaeal amoA , we find AOA to be pervasive in areas of the ocean that are critical for the global nitrogen cycle, including the base of the euphotic zone, suboxic water columns, and estuarine and coastal sediments. Diverse and distinct AOA communities are associated with each of these habitats, with little overlap between water columns and sediments. Within marine sediments, most AOA sequences are unique to individual sampling locations, whereas a small number of sequences are evidently cosmopolitan in distribution. Considering the abundance of nonextremophilic archaea in the ocean, our results suggest that AOA may play a significant, but previously unrecognized, role in the global nitrogen cycle.

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Metadata

Authors
Francis, C. A., Roberts, K. J., Beman, J. M., Santoro, A. E., & Oakley, B. B.
Venue
Proceedings of the National Academy of Sciences
Published
2005-09-26
Volume
102
Issue
41
Pages
14683-14688
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2159237163
Cited by
2,381
References
39
FWCI
44.39
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean. https://app.cochat.ai/papers/10.1073/pnas.0506625102
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Francis, C. A., Roberts, K. J., Beman, J. M., Santoro, A. E., & Oakley, B. B. (2005). Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0506625102

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