Moscow, Moscow, Russian Federation
This report presents the results of theoretical studies on the mathematical description of photosynthetic electron transport, proton transport and ATP synthesis in the framework of our comprehensive mathematical model of light induced processes of oxygenic photosynthesis. The model takes into account the key stages of electron and proton transport in chloroplasts associated with ATP synthesis, as well as the processes of regulation of light stages of photosynthesis in chloroplasts of higher plants and in cyanobacteria cells. One of the features of our model is that it considers the functioning of both photosynthetic and respiratory chain of electronic transport. The analysis of numerical experiments allowed us to identify the factors responsible for the appearance of complex multiphase kinetics of electronic transport, depending on the structural features of the photosynthetic apparatus and the conditions of the photosynthetic apparatus (lateral heterogeneity of thylakoid membranes, the presence of alternative electron transport paths, variation of the gas composition of the medium and light intensity).
photosynthesis, electron and proton transport, mathematical modeling
1. Blankenship R.E. Molecular Mechanisms of Photosynthesis. Blackwell Science Inc, Malden. 2002.
2. Rubin A., Riznichenko G. Mathematical Biophysics. Series: Biological and Medical Physics, Biomedical Engineering, XV. 2014.
3. Tikhonov A.N. Modeling electron and proton transport in chloroplasts. In: Chloroplasts. Current research and future trends. Ed. Kirchhoff H. Poole: Caister Acad. Press, 2016, pp. 101-134.
4. Tikhonov A.N., Vershubskii A.V. Computer modeling of electron and proton transport in chloroplasts. Biosystems, 2014, vol. 121, pp. 1-21.
5. Vershubskii A.V., Nevyantsev S.V., Tikhonov A.N. Modeling of Electron and Proton Transport in Chloroplast Membranes with Regard to Thioredoxin-Dependent Activation of the Calvin-Benson Cycle and ATP Synthase. Biochemistry (Moscow) Supplement Series A: Membrane and Cell Biology, 2018, vol. 12, pp. 287-302.
6. Vershubskii A.V., Mishanin V.I., Tikhonov A.N. Modeling of the photosynthetic electron transport regulation in cyanobacteria. Biochemistry (Moscow) Supplement Series A: Membrane and Cell Biology, 2014, vol. 8, pp. 262-278.
7. Vershubskii A.V., Trubitsin B.V., Priklonskii V.I., Tikhonov A.N. Lateral heterogeneity of the proton potential along the thylakoid membranes of chloroplasts. Biochim. Biophys. Acta, 2017, vol. 1859, pp. 388-401.
8. Trubitsin B.V., Vershubskii A.V., Priklonskii V.I., Tikhonov A.N. Short-term regulation and alternative pathways of photosynthetic electron transport in Hibiscus rosa-sinensis leaves. J. Photochem. Photobiol. B, 2015, vol. 152, pp. 400-415.
9. Kuvykin I.V., Ptushenko V.V., Vershubskii A.V., Tikhonov A.N. Regulation of electron transport in C3 plant chloroplasts in situ and in silico. Short-term effects of atmospheric SO2 and O2. Biochim. Biophys. Acta, 2011, vol. 1807, pp. 336-347.
10. Vershubskii A.V., Kuvykin I.V., Priklonskii V.I., Tikhonov A.N. Functional and topological aspects of pH-dependent regulation of electron and proton transport in chloroplasts in silico. BioSystems, 2011, vol. 103, pp. 164-179.
11. Tikhonov A.N. Induction events and short-term regulation of electron transport in chloroplasts: An overview. Photosynth Res., 2015, vol. 125, pp. 65-94
12. Tikhonov A.N. pH-Dependent regulation of electron transport and ATP synthesis in chloroplasts. Photosynth. Res., 2013, vol. 116, pp. 511-534.
13. Vershubskiy A.V., Tihonov A.N. rN-zavisimaya regulyaciya elektronnogo i protonnogo transporta v hloroplastah in situ i in silico. Biologicheskie membrany, 2019, t. 36, № 4, s. 242-254. [Vershubskii A.V., Tihonov A.N. pH-dependent regulation of electron and proton transport in chloroplasts in situ and in silico. Biologicheskie membrany, 2019, vol. 36, no. 4, pp. 242-254. (In Russ.)]
14. Vershubskiy A.V., Tihonov A.N. Elektronnyy transport i transmembrannyy perenos protonov v fotosinteticheskih sistemah oksigennogo tipa in silico. Biofizika, 2013, t. 58, № 1, s. 75-89. [Vershubskii A.V., Tikhonov A.N. Electron transport and transmembrane proton transfer in photosynthetic systems of oxygenic type in silico. Biophysics, 2013, vol. 58, pp. 60-71.]
