Short-Term Measurement of Carbon Isotope Fractionation in Plants | Zendy

Marion H. O’Leary | Zendy; Isabel Treichel | Zendy; Melodye A. Rooney | Zendy

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Short-Term Measurement of Carbon Isotope Fractionation in Plants

Author(s) -

Marion H. O’Leary,

Isabel Treichel,

Melodye A. Rooney

Publication year - 1986

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.80.2.578

Subject(s) - fractionation , term (time) , isotopes of carbon , isotope , environmental science , environmental chemistry , chemistry , radiochemistry , carbon fibers , stable isotope ratio , chromatography , nuclear physics , mathematics , physics , total organic carbon , algorithm , quantum mechanics , composite number

Combustion-based studies of the carbon-13 content of plants give only an integrated, long-term value for the isotope fractionation associated with photosynthesis. A method is described here which permits determination of this isotope fractionation in 2 to 3 hours. To accomplish this, the plant is enclosed in a glass chamber, and the quantity and isotopic content of the CO(2) remaining in the atmosphere are monitored during photosynthesis. Isotope fractionation studies by this method give results consistent with what is expected from combustion studies of C(3), C(4), and Crassulacean acid metabolism plants. This method will make possible a variety of new studies of environmental and species effects in carbon isotope fractionation.

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