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Localization of Nitrogen Fixation in Anabaena

Nature volume 234, pages 231–232 (1971)Cite this article

Abstract

THE function of heterocysts in blue-green algae has been controversial for some time; there are indications that these enlarged cells are the site of nitrogen fixation1,2. But non-heterocystous blue-green algae may fix nitrogen if grown under low oxygen tension3, so that heterocysts are not essential for nitrogen fixation in these algae. According to a current hypothesis4, in aerobic conditions nitrogen fixation is confined to heterocysts, while in anaerobic or semi-anaerobic conditions the vegetative cells fix nitrogen as well. We have evidence to support this view.

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Authors and Affiliations

  1. Department of Experimental Botany, Botanisch Laboratorium, Leiden

    H. J. VAN GORKOM

  2. Biophysical Laboratory of the State University, Leiden

    M. DONZE

Authors
  1. H. J. VAN GORKOM
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  2. M. DONZE
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VAN GORKOM, H., DONZE, M. Localization of Nitrogen Fixation in Anabaena. Nature 234, 231–232 (1971). https://doi.org/10.1038/234231b0

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