Biophysics

, 56:679

On the nature of the light-induced component of dark respiration of plants

  • A. A. Ivlev
  • Yu. A. Dubinsky
Complex Systems Biophysics

DOI: 10.1134/S0006350911040099

Cite this article as:
Ivlev, A.A. & Dubinsky, Y.A. BIOPHYSICS (2011) 56: 679. doi:10.1134/S0006350911040099

Abstract

The data on the isotope composition of carbon of CO2 of the light-induced dark respiration component have been analyzed using the oscillation model of photosynthesis. It was concluded that this component originates during the transformation of sucrose accumulated by the plant in the oxygenase phase of photosynthetic oscillations in the light period into organic acids. The transformation occurs in the dark period. It this process, C-3 and C-4 atoms, which determine the “heavy“ isotope composition of carbon of CO2 of the light-induced dark respiration component, are split off from the hexose link of sucrose.

Keywords

isotope fractionation of carbon photosynthesis CO2 assimilation photorespiration isotope effects light-enhanced dark respiration 

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • A. A. Ivlev
    • 1
  • Yu. A. Dubinsky
    • 2
  1. 1.Timiryazev Russian State Agrarian UniversityMoscowRussia
  2. 2.Institute of Dynamics of GeospheresRussian Academy of SciencesMoscowRussia

Personalised recommendations