Effect of Carbon Dioxide on Photorespiration
- 1 February 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 63 (2), 399-401
- https://doi.org/10.1104/pp.63.2.399
Abstract
The isotopic CO2 technique for measuring photorespiration was shown to be a valid technique for measuring the unidirectional inward and outward fluxes of CO2 from a sunflower (Helianthus annuus L.) leaf in the light. The rate of photorespiration was decreased little as the CO2 concentration was increased from 20-1150 .mu.l/l. This finding contradicts the widely held assumption that photorespiration is suppressed at high CO2 concentrations. Some discussion regarding this apparent conflict is presented.Keywords
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