Photorespiratory Phenomena in Maize: Oxygen Uptake, Isotope Discrimination, and Carbon Dioxide Efflux 1
AUTOR(ES)
Volk, R. J.
RESUMO
Concurrent O2 evolution, O2 uptake, and CO2 uptake by illuminated maize (Zea mays) leaves were measured using 13CO2 and 18O2. Considerable O2 uptake occurred during active photosynthesis. At CO2 compensation, O2 uptake increased. Associated with this increase was a decrease in O2 release such that a stoichiometric exchange of O2 occurred. The rate of O2 exchange at CO2 compensation was directly related to O2 concentration in the atmosphere at least up to 8% (v/v).
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=365932Documentos Relacionados
- Carbon Isotope Discrimination, Gas Exchange, and Growth of Sugarcane Cultivars under Salinity.
- Concomitant Determination of Folar Nitrogen Loss, Net Carbon Dioxide Uptake, and Transpiration 1
- Effects of Glycine Hydroxamate, Carbon Dioxide, and Oxygen on Photorespiratory Carbon and Nitrogen Metabolism in Spinach Mesophyll Cells 1
- Enhanced Dark Carbon Dioxide Fixation in Maize: Effect of the Oxygen Concentration during Preillumination on 14CO2 Uptake and the Intramolecular Labeling Pattern of Malate and Aspartate
- Water Relations Link Carbon and Oxygen Isotope Discrimination to Phloem Sap Sugar Concentration in Eucalyptus globulus