Plant Physiol. Illumina
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Plant Physiology 53:581-584 (1974)
© 1974 American Society of Plant Biologists

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Articles

Variation in the Carbon Isotope Composition of a Plant with Crassulacean Acid Metabolism

J. C. Lerman1

Eliane Deleens2, Aimé Nato2 and Alexis Moyse2

1 Centre des Faibles Radioactivités, Laboratoire Mixte Centre National de la Recherche Scientifique et Commissariat à l'Energie Atomique, 91190 Gif-sur-Yvette, France, Laboratoire de Physiologie Cellulaire Végétale, Associé au Centre National de la Recherche Scientifique, Université Paris-Sud, 91405 Orsay, France

The content of 13C varies in plants with Crassulacean acid metabolism. Differences up to 3.5{per thousand} in the 13C/12C ratios were observed between leaves of different age in the same plant of Bryophyllum daigremontianum. Soluble and insoluble carbon in the same leaf differed up to 8{per thousand}, the largest difference occurring in the leaves with the highest Crassulacean acid metabolism activity. Models to account for the isotope discrimination by C3, C4, and Crassulacean acid metabolism plants are proposed.






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ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1974 by the American Society of Plant Biologists