Biochemical components of the photosynthetic CO2 compensation point of higher plants

Daniel Kestler, B. C. Mayne, T. B. Ray, L. D. Goldstein, R. H. Brown, C. C. Black

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Barley, Panicum milioides and Panicum maximum were exposed to 14CO2 near their photosynthetic CO2 compensation points and their respective 14C-products were determined. In short exposure times Panicum maximum had 100% of its 14C in malate and aspartate whereas Panicum milioides and barley had 16 and 3% of their respective 14C in C4 organic acids. Near the respective CO2 compensation points a linear relationship occurs in plotting the ratio of glycine, serine, and glycerate to C4 organic acids. The ratio of ribulose 1,5-bisphosphate oxygenase to phosphoenolpyruvate carboxylase is linear with their CO2 compensation points. The photosynthetic CO2 compensation point apparently is controlled by the activity of enzymes producing photorespiration metabolites and the activity of phospheonolpyruvate carboxylase.

Original languageEnglish (US)
Pages (from-to)1439-1446
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume66
Issue number4
DOIs
StatePublished - Oct 27 1975
Externally publishedYes

Fingerprint

Panicum
Organic acids
Hordeum
Phosphoenolpyruvate Carboxylase
Oxygenases
Acids
Metabolites
Aspartic Acid
Glycine
Serine
Compensation and Redress
Enzymes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Biochemical components of the photosynthetic CO2 compensation point of higher plants. / Kestler, Daniel; Mayne, B. C.; Ray, T. B.; Goldstein, L. D.; Brown, R. H.; Black, C. C.

In: Biochemical and Biophysical Research Communications, Vol. 66, No. 4, 27.10.1975, p. 1439-1446.

Research output: Contribution to journalArticle

Kestler, Daniel ; Mayne, B. C. ; Ray, T. B. ; Goldstein, L. D. ; Brown, R. H. ; Black, C. C. / Biochemical components of the photosynthetic CO2 compensation point of higher plants. In: Biochemical and Biophysical Research Communications. 1975 ; Vol. 66, No. 4. pp. 1439-1446.
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