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The temperature optimum of the nitrate reductase assay for marine phytoplankton
Kristiansen, S. (1983). The temperature optimum of the nitrate reductase assay for marine phytoplankton. Limnol. Oceanogr. 28(4): 776-780
In: Limnology and Oceanography. American Society of Limnology and Oceanography: Waco, Tex., etc.. ISSN 0024-3590, more
Peer reviewed article  

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Keywords
    Enzymatic activity; Instruments; Methodology; Phytoplankton; Plankton; Productivity; Productivity; Productivity; Temperature; Tests; Marine

Author  Top 
  • Kristiansen, S.

Abstract
    Nitrate reductase in crude extracts of phytoplankton from cultures and from natural populations from the Oslofjord (Norway) was assayed at different incubation temperatures. The temperature optimum of the enzyme was 10 degree -15 degree C and 15 degree -20 degree C for cultures and about 10 degree C for natural plankton. The utility of the nitrate reductase assay as an ecological tool is greatly diminished unless performed at the temperature optimum.

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