The relationship between steady-state gas exchange of bean leaves and the levels of carbon-reduction-cycle intermediates
- 1 March 1984
- journal article
- Published by Springer Nature in Planta
- Vol. 160 (4) , 305-313
- https://doi.org/10.1007/bf00393411
Abstract
The relationship between the gas-exchange characteristics of attached leaves of Phaseolus vulgaris L. and the pool sizes of several carbon-reduction-cycle intermediates was examined. After determining the rate of CO2 assimilation at known intercellular CO2 pressure, O2 pressure and light, the leaf was rapidly killed (2, photosynthesis appeared RuBP-saturated at low CO2 pressure and RuBP-limited at high CO2 pressure. In 21 mbar (2%) O2, the level of RuBP always appeared saturating. Very high levels of PGA and other phosphate-containing compounds were found with some conditions, especially under low oxygen.Keywords
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