Ecological Significance of the Interaction of Photosynthesis Light and Dark Processes
- 1 Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
- 2 Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
- 3 Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
Abstract
The kinetics of 14 C incorporation into glycolate was studied after changing the export of photosynthetic products from the leaf. It has been shown that the ribulose-bisphosphate-oxygenase pathway of glycolate formation works in the stationary state of the plant. An excess of photosyntates or a decrease in the amount of light primary products, as well as nitrates in the leaves, immediately turns on the transketolase pathway of glycolate formation. In this case, part of the oxygen formed in the photochemical reactions of chloroplasts ceases to be released from the leaf. After oxygen receives an electron from ferredoxin in the electron transport chain of chloroplasts, it starts (through photorespiration) the formation of non-carbohydrate photosyntates and metabolic processes in the cytoplasm. It was concluded that the main function of pho torespiration in the regulation of photosynthesis is maintaining a balance between light and dark processes of photosynthesis on change of living conditions.
- Gibbs, M. (1972) Inhibition of Photosynthesis by Oxigen and Glicolic Acid Sinthesis. In: Theoretical Basis of Photosynthesis Productivity, Nauka, Moscow, 205.
- Chikov, V.I. (1996) Photorespiration. Educate Journal, No. 11, 2-8.
- Karpilov, Y.S. (1960) Distribution of Radioactive Carbon 14C among the Products of Corn Photosynthesis. Proceedings of the Kazan Agricultural Institute, Vol. 41, 5-13.
- Hatch, M.D. and Slack, S.R. (1966) Photosynthesis by Sugar-Cane Leaves: A New Carboxylation Reaction and the Pathway of Sugar Farmation. Biochemical Journal, 101, 103-111. https://doi.org/10.1042/bj1010103
- Rakhmankulova, Z.P. (2018) Photorespiration: Role in the Production Process and in the Evolution of C4 Plants. Russian Journal of Plant Physiology, 65, 163-179. https://doi.org/10.1134/S1021443718030068
- Chikov, V.I., Akhtiamova, G.A., et al. (2015) Effect of Silencing of the Apoplastic Invertase Gene on Photosynthesis in Tomato. Russian Journal of Plant Physiology, 62, 39-44. https://doi.org/10.1134/S1021443715010045
- Chikov, V.I. (2017) The Participation of Apoplast Invertase in the Regulation of Photosynthesis by Stomatal of Mechanism. Journal of Plant Sciences, 5, 134-145.
- Kursanov, A.L. (1984) Endogenous Regulation of Transport of Assimilates and Sink-Source Relations in Plants. Soviet Plant Physiology, 31, 579-595.
- Keerberg, O.F. (1972) Effect of Light Intensity on the Products of of Photosynthesis in Bean Leaves. In: Theoretical Foundations of Photosynthesis Productivity, Nauka, Moscow, 200.
- Chikov, V.I., Akhtyamova, G.A. and Khamidullina, L. (2019) The Participation of Photorespiration in the Regulation of Photosynthesis. International Journal of Recent Scientific Research, 10, 30693-30696. https://doi.org/10.24327/IJRSR
- Hall, A. and Brady, C.J. (1977) Assimilate Source-Sink Relationships in Capsicum annuum L. II: Effects of Fruiting and Defloration on the Photosynthetic Capacity and Senescence of the Leaves. Journal of Plant Physiology, 5, 771-779. https://doi.org/10.1071/PP9770771
- Lenz, F. (1977) Einfluβ der Frucht auf Photosynthese und Atmung Ztschr. Pflanzenenernahr. und Bodenk. Bd. 140, 51-61. https://doi.org/10.1002/jpln.19771400107
- Chikov, V.I. and Isfandiyarov, N.I. (1978) Effects of the Rate of Assimilate Efflux on the Ratio between Some Components of Plant Gas Exchange. In: All-Union Conference Biochemical and Biophysical Mechanisms of Substance Transport in Plants and Its Regulation, USSA, Gorky, 182.