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Carbonic Anhydrase and the Regulation of Photosynthesis

Nature New Biology volume 231, pages 81–83 (1971)Cite this article

Abstract

THE role of CO2 in the regulation of photosynthetic and respiratory metabolism in plants is little understood in the unicellular alga Chlorella pyrenoidosa; for example, after autotrophic growth in high CO2 (5·5% by volume), transfer to a CO2 concentration about ten times less than the concentration in air results initially in low rates of photosynthesis characterized by the virtual absence of the Calvin cycle1 of CO2 fixation2. An induction period of about 2 h is necessary before normal photosynthetic rates are established. Cells grown in air (0.03% CO2) do not show this effect and photosynthesize at comparatively high rates even in very low concentrations of CO2.

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Authors and Affiliations

  1. Plant Physiology Unit, CSIRO Division of Food Preservation, Ryde, and School of Biological Sciences, University of Sydney, Sydney, 2006

    D. GRAHAM & M. L. REED

Authors
  1. D. GRAHAM
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  2. M. L. REED
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GRAHAM, D., REED, M. Carbonic Anhydrase and the Regulation of Photosynthesis. Nature New Biology 231, 81–83 (1971). https://doi.org/10.1038/newbio231081a0

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  • DOI: https://doi.org/10.1038/newbio231081a0

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