All measurements of intact leaf 02 sensitivity can be explained by the oxygenation model for glycolate formation and glycolate metabolism by established pathways. Predicting the rate of oxygenation from the underlying biochemistry is more reliable than calculating the rate of oxygenation from intact leaf gas exchange measurements. REFERENCES 1. Badger MR, TD Sharkey, S von Caemmerer: The relationship between steady-state gas exchange of bean leaves and the levels of carbon reduction cycle intermediates. Planta 160:305-313, 1984. 2. Bowes, G, WL Ogren, RH Hageman: Phosphoglycolate production catalyzed by ribulose diphosphate carboxylase. Biochem. Biophys. Res. Commun. 45:716-722, 1971. 3. Farquhar GD, S von Caemmerer, JA Berry: A biochemical model of photosynthetic C02 assimilation in leaves of C3 species. Planta 149: 78-90, 1980. 4. Farquhar GD, S von Caemmerer: Modelling of photosynthetic response to environmental conditions. In OL Lange, PS Nobel, CB Osmond, H Ziegler, eds, Encycl. of Plant Physiol., New Series, Springer- Verlag, Heidelberg 12b: 549-587, 1982. 5. Jordan DB, WL Ogren: The C02/02 specificity of ribulose 1- bisphosphate carboxylase/oxygenase.
Dependence on ribulose bisphosphate concentration, pH and temperature. Planta 161: 308-313, 1984. 6. Ku SB, GE Edwards: Oxygen inhibition of photosynthesis. I. Temperature dependence and relation to 02/C02 solubility ratio. Plant Physiol 59: 986-990, 1977. 7. Laing WA, WL Ogren, RL Hageman: Regulation of soybean net photosynthetic C02 fixation by the interaction of C02' 02 and ribulose l,5-diphosphate carboxylase. Plant Physiol 54: 678-685, 1974.
Summing-up: measuring photosynthesis in vivo.- Limitation of photosynthesis by RuBP regeneration rate.- Cooperativity between the subunits of a higher plant Rubisco: a superactive state of the enzyme.- Regions of the large subunit that compose the active site.- Discrepancy between Rubpco kinetics and photosynthetic gas exchange of C3 leaves.- Mechanisms for the regulation of CO2 fixation by ribulose-1,5-bisphosphate carboxylase.- Photosynthetic parameters as measured via non-radiative de-excitation.- The regulation of enzymes of sucrose metabolism in plant sinks.- The light dependent ammonia metabolism in wheat and maize leaves.- Theoretical and experimental observations on O2 sensitivity of C3 photosynthesis.- Effect of oxygen on photosynthesis in bean (Phaseolus vulgaris L.) leaves at elevated carbon dioxide concentration.- Mass spectrometric analysis of photosynthetic oxygen evolution and uptake by Chlamydomonas reinhardtii.- The influence of CO2 enrichment of the atmosphere and NaCl on growth and metabolism of Urtica dioica L.- Different limiting processes of photosynthesis in lichens.- Net photosynthesis of Calluna vulgaris (L) Hull.- Control of photosynthesis by variation of diffusion resistance in mistletoes and their hosts.- The humidity factor in stomatal control and its effect on crop productivity.- Photosynthesis, nitrogen levels, and dry matter accumulation in flag wheat leaves during grain filling.- Leaf architecture and net photosynthetic rate during ontogeny of primary french bean leaves.- Organization of photosynthetic system of dorsivental leaves as adapted to the irradiation from the adaxial side.- The control of photosynthetic gas exchange by assimilate accumulation in wheat.- Source-sink balance as a factor in photosynthetic acclimatization.- Photosynthesis and respiration of two inbred lines of Plantago major L. differing in relative growth rate.- Carbon and nitrogen metabolism in photorespiratory mutants of barley (Hordeum vulgare L.).