Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1973 Nov;52(5):427-30.
doi: 10.1104/pp.52.5.427.

C/C ratio changes in crassulacean Acid metabolism plants

M M Bender  1
Affiliations

C/C ratio changes in crassulacean Acid metabolism plants

M M Bender. Plant Physiol. 1973 Nov.

Abstract

(13)C/(12)C ratios have been found in totally combusted leaves of Crassulacean acid metabolism plants to range from -14 to -33 delta (13)C per thousand compared with a limestone standard. Crassulacean acid metabolism plants apparently utilize both ribulose-1, 5-diphosphate carboxylase and phosphoenolpyruvate carboxylase to assimilate atmospheric CO(2) and, depending on environmental conditions, have (13)C/(12)C ratios indicative of either carboxylase or to any intermediate value. The degree of discrimination against (13)C and the resultant (13)C/(12)C ratio from the photosynthetically fixed CO(2) is influenced by environmental conditions and is not a specific and fixed characteristic of a Crassulacean acid metabolism plant. Certain Crassulacean acid metabolism plants may shift their ratios as much as 17 delta (13)C per thousand in specific environments.

PubMed Disclaimer

References

    1. Biochem Biophys Res Commun. 1970 Dec 9;41(5):1205-10 - PubMed
    1. Plant Physiol. 1973 Jan;51(1):97-103 - PubMed
    1. Plant Physiol. 1971 Mar;47(3):380-4 - PubMed
    1. Proc Natl Acad Sci U S A. 1961 May 15;47:623-32 - PubMed
    1. Plant Physiol. 1961 Mar;36(2):133-8 - PubMed

LinkOut - more resources