Abstract
The light-saturated rates of photosynthesis at 300 vpm CO2 and 20°C (Pmax) of leaves at different stages of development have been predicted with a knowledge of the amount and kinetics of tomato leaf RuBPc/o, based on the assumption that under these conditions the enzyme is fully activated and RuBP saturated. When grown in high CO2 (1000 vpm) the amount and activity of RuBPc under unit surface area and Pmax decreased sharply beyond about 25% of full leaf expansion compared with leaves grown in 300 vpm CO2. When almost fully expanded the high CO2 grown leaves contained only about half as much RuBPc as the leaves grown in a normal [CO2] and Pmax was similarly reduced. Overall, the predicted rates of Pmax correlated reasonably well with observed rates, supporting the view that this enzyme may be a factor governing photosynthetic capacity.
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© 1984 Springer Science+Business Media Dordrecht
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Besford, R.T., Withers, A.C., Ludwig, L.J. (1984). Ribulose Bisphosphate Carboxylase and Net CO2 Fixation in Tomato Leaves. In: Sybesma, C. (eds) Advances in Photosynthesis Research. Advances in Agricultural Biotechnology, vol 3. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-4973-2_176
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DOI: https://doi.org/10.1007/978-94-017-4973-2_176
Publisher Name: Springer, Dordrecht
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