Nitrate Consumers in Arctic Marine Eukaryotic Communities: Comparative Diversities of 18S rRNA, 18S rRNA Genes, and Nitrate Reductase Genes

To better understand the diversity of primary producers in the Arctic Ocean, we targeted a nitrogen cycle gene, NR, which is required for phytoplankton to assimilate nitrate into organic forms of nitrogen macromolecules. We compared this to the more detailed taxonomy from ice-influenced stations usi...

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Bibliographic Details
Published in:Applied and Environmental Microbiology
Main Authors: Comeau, André M., Lagunas, Marcos G., Scarcella, Karen, Varela, Diana E., Lovejoy, Connie
Other Authors: Stams, Alfons J. M., Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada, Fonds de Recherche du Québec - Nature et Technologies, University of Victoria
Format: Article in Journal/Newspaper
Language:English
Published: American Society for Microbiology 2019
Subjects:
Arctic
Arctic Ocean
Phytoplankton
Online Access:http://dx.doi.org/10.1128/aem.00247-19
https://journals.asm.org/doi/pdf/10.1128/AEM.00247-19
Description
Summary:To better understand the diversity of primary producers in the Arctic Ocean, we targeted a nitrogen cycle gene, NR, which is required for phytoplankton to assimilate nitrate into organic forms of nitrogen macromolecules. We compared this to the more detailed taxonomy from ice-influenced stations using a general taxonomic gene (18S rRNA). NR genes were ubiquitous and could be classified as belonging to diatoms, dinoflagellates, other flagellates, chlorophytes, and unknown microbial eukaryotes, suggesting novel diversity of both species and metabolism in arctic phytoplankton.

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