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. 1979 Nov;64(5):735–738. doi: 10.1104/pp.64.5.735

Photosynthesis and Photorespiration in Whole Plants of Wheat

Alain Gerbaud 1, Marcel Andre 1
PMCID: PMC543347  PMID: 16661044

Abstract

Wheat was cultivated in a small phytotronic chamber. 18O2 was used to measure the O2 uptake by the plant, which was recorded simultaneously with the O2 evolution, net CO2 uptake, and transpiration. At normal atmospheric CO2 concentration, photorespiration, measured as O2 uptake, was as important as the net photosynthesis. The level of true O2 evolution was independent of CO2 concentration and stayed nearly equal to the sum of net CO2 photosynthesis and O2 uptake. We conclude that at a given light intensity, O2 and CO2 compete for the reducing power produced at constant rate by the light reactions of photosynthesis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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