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Published March 1961 | Published
Journal Article Open

Metabolic Fractionation of C^(13) & C^(12) in Plants

Abstract

Nier and Gulbransen (10) observed 20 years ago that the C^(13)/C^(12) ratio of carbon in nature (~1/90) varies slightly depending on the source of the carbon analysed. These workers found that limestones, at-mospheric carbon dioxide, marine plants, and land plants possess different and characteristic C^(13)/C^(12) ratios. Workers using improved analytical techniques (9) have confirmed and extended many of Nier and Gulbransen's early observations (4, 5, 7, 13, 14, 15). Our present knowledge of the C^(13)/C^(12) ratio ranges for various natural carbon containing materials is summarized in figure 1.

Additional Information

© 1961 American Society of Plant Biologists. Received July 18, 1960. This work was performed under AEC contract AT(11-1)208. The authors are indebted to Dr. James Bonner and Dr. Frits Went of the California Institute of Technology Division of Biology for their many helpful discussions and facilities which they made available. The authors also wish to thank the staff of the Earhart Plant Research Laboratory for their cooperation. The authors thank Mrs. Irene Vidziunas for technical assistance.

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August 19, 2023
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