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Science 27 May 1983:
Vol. 220. no. 4600, pp. 947 - 949
DOI: 10.1126/science.220.4600.947
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Articles

Isotopic Composition of Cellulose from C3, C4, and CAM Plants Growing Near One Another

LEONEL STERNBERG 1 and MICHAEL J. DENIRO 1

1 Department of Earth and Space Sciences, University of California, Los Angeles 90024

Cellulose from plants having crassulacean acid metabolism was enriched in deuterium but not in oxygen-18 in relation to cellulose from C3 and C4 plants growing in the same area, indicating that the deuterium enrichment is due to isotopic fractionation during biochemical reactions rather than during evapotranspiration. Hydrogen and oxygen stable isotope ratios of cellulose from the plants in this restricted area showed more variability than that observed in samples collected across an entire continent. Biological factors appear to be as important as environmental factors in determining the isotope ratios of plant cellulose.

Submitted on October 5, 1982
Revised on December 7, 1982


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cerebrospinal Fluid and Plasma Monoamine Metabolites and Their Relation to Psychosis: Implications for Regional Brain Dysfunction in Schizophrenia.
D. Pickar, A. Breier, J. K. Hsiao, A. R. Doran, O. M. Wolkowitz, C. N. Pato, P. E. Konicki, and W. Z. Potter (1990)
Arch Gen Psychiatry 47, 641-648
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Science. ISSN 0036-8075 (print), 1095-9203 (online)