Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/50908
Title: Nitrate reductase in Peru current phytoplankton
Authors: Eppley, R. W.
Packard, T. T. 
MacIsaac, J. J.
UNESCO Clasification: 251001 Oceanografía biológica
Issue Date: 1970
Publisher: 0025-3162
Journal: Marine Biology 
Abstract: Nitrate reductase (NR) activity was assayed by measuring the NADH-dependent formation of nitrite in phytoplankton extracts. NR specific activity increased with the nitrate concentration of the water in upwelling areas of the Peru Current. The temperature optimum for NR for natural phytoplankton was 15° to 20°C. NR activity showed diel periodicity, with maximum activity about noon and minimum activity near midnight local time. Rate of nitrate reduction in the extracts averaged only about 15% of the rate of nitrate assimilation in the whole cells.
URI: http://hdl.handle.net/10553/50908
ISSN: 0025-3162
DOI: 10.1007/BF00347227
Source: Marine Biology [ISSN 0025-3162], v. 6, p. 195-199
Appears in Collections:Artículos
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