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High rate of uptake of organic nitrogen compounds by Prochlorococcus cyanobacteria as a key to dominance in oligotrophic oceanic waters

Zubkov, M.V.; Fuchs, B.M.; Tarran, G.A.; Burkill, P.H.; Amann, R.. 2003 High rate of uptake of organic nitrogen compounds by Prochlorococcus cyanobacteria as a key to dominance in oligotrophic oceanic waters. Applied and Environmental Microbiology, 69 (2). 1299-1304. 10.1128/AEM.69.2.1299-1304.2003

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Abstract/Summary

Direct evidence that marine cyanobacteria take up organic nitrogen compounds in situ at high rates is reported. About 33% of the total bacterioplankton turnover of amino acids, determined with a representative [35S]methionine precursor and flow sorting, can be assigned to Prochlorococcus spp. and 3% can be assigned to Synechococcus spp. in the oligotrophic and mesotrophic parts of the Arabian Sea, respectively. This finding may provide a mechanism for Prochlorococcus' competitive dominance over both strictly autotrophic algae and other bacteria in oligotrophic regions sustained by nutrient remineralization via a microbial loop.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1128/AEM.69.2.1299-1304.2003
ISSN: 0099-2240
Related URLs:
Date made live: 23 Apr 2004 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/101311

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