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Cited by 363

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

New Nitrogen-Fixing Microorganisms Detected in Oligotrophic Oceans by Amplification of Nitrogenase ( nifH ) Genes

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Zehr, Jonathan P., Mellon, Mark T., Zani, Sabino·1998·Applied and Environmental Microbiology

Abstract

Oligotrophic oceanic waters of the central ocean gyres typically have extremely low dissolved fixed inorganic nitrogen concentrations, but few nitrogen-fixing microorganisms from the oceanic environment have been cultivated. Nitrogenase gene ( nifH ) sequences amplified directly from oceanic waters showed that the open ocean contains more diverse diazotrophic microbial populations and more diverse habitats for nitrogen fixers than previously observed by classical microbiological techniques. Nitrogenase genes derived from unicellular and filamentous cyanobacteria, as well as from the α and γ subdivisions of the class Proteobacteria , were found in both the Atlantic and Pacific oceans. nifH sequences that cluster phylogenetically with sequences from sulfate reducers or clostridia were found associated with planktonic crustaceans. Nitrogenase sequence types obtained from invertebrates represented phylotypes distinct from the phylotypes detected in the picoplankton size fraction. The results indicate that there are in the oceanic environment several distinct potentially nitrogen-fixing microbial assemblages that include representatives of diverse phylotypes.

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Crossref · 10.1128/aem.64.9.3444-3450.1998

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Metadata

Authors
Zehr, J. P., Mellon, M. T., & Zani, S.
Venue
Applied and Environmental Microbiology
Published
1998-09
Volume
64
Issue
9
Pages
3444-3450
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W4243683031
Cited by
363
References
27
FWCI
9.89
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: New Nitrogen-Fixing Microorganisms Detected in Oligotrophic Oceans by Amplification of Nitrogenase ( nifH ) Genes. https://app.cochat.ai/papers/10.1128/aem.64.9.3444-3450.1998
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Zehr, J. P., Mellon, M. T., & Zani, S. (1998). New Nitrogen-Fixing Microorganisms Detected in Oligotrophic Oceans by Amplification of Nitrogenase ( nifH ) Genes. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.64.9.3444-3450.1998

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