Abstract
IN a previous communication1 it has been shown that certain nitrogen-fixing blue-green algae isolated from marine environments liberate appreciable quantities of fixed nitrogen into the medium during healthy growth. This feature has been observed for many blue-green algae by other workers2–4 and investigations on the production of extracellular nitrogen have also been carried out5–7. This communication provides information on the relationship between growth and liberation of extracellular nitrogen by the two nitrogen-fixing species Nostoc entophytum and Calothrix scopulorum, and on the nature of the extracellular products.
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References
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STEWART, W. Liberation of Extracellular Nitrogen by Two Nitrogen-fixing Blue-green Algae. Nature 200, 1020–1021 (1963). https://doi.org/10.1038/2001020a0
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DOI: https://doi.org/10.1038/2001020a0
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