Publications by authors named "Sergei S Khruschev"
Clothianidin (CL) is a neonicotinoid insecticide widely used in crop protection against insect pests. However, its effects on photosynthesis remain largely unknown. Here, by investigating the influence of CL at the concentrations of 22 and 110 μg/L on the primary processes of photosynthesis, membrane fluidity and structural changes of pea chloroplasts, we located several primary binding sites of this pesticide.
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- Photosystem II (PSII) is a key component of photosynthesis that is highly sensitive to environmental changes, and its properties vary among different autotrophic organisms, contributing to their stress resilience.
- A new mathematical modeling approach has been developed to analyze the oxygen-evolving complex and light-harvesting characteristics of PSII, utilizing chlorophyll a fluorescence dynamics in samples treated with a specific inhibitor.
- This model simplifies the analysis into three ordinary differential equations, allowing for the study of PSII heterogeneity across various organisms and environmental conditions, leading to insights into their adaptability and stress responses.
Article Synopsis
- The investigation focused on modeling and understanding the regulation of electron transport processes in the photosynthetic membrane using mathematical and computer simulations at Lomonosov Moscow State University.
- Detailed kinetic models were created to analyze thylakoid membrane processes and using data fitting techniques, researchers were able to infer previously undetermined parameters.
- This research utilized various modeling methods, including agent-based Monte Carlo modeling and multiparticle simulations, to explore the dynamics and interactions at molecular and subcellular levels involved in photosynthesis.
Using a mathematical simulation approach, we studied the dynamics of the green microalga phosphate metabolism response to shortage and subsequent replenishing of inorganic phosphate in the medium. A three-pool interaction model was used to describe the phosphate uptake from the medium, its incorporation into the cell organic compounds, its storage in the form of polyphosphates, and culture growth. The model comprises a system of ordinary differential equations.
View Article and Find Full Text PDFMechanisms of the complex formation between plastocyanin and cytochrome f in higher plants (Spinacia oleracea and Brassica rapa), green microalgae Chlamydomonas reinhardtii and two species of cyanobacteria (Phormidium laminosum and Nostoc sp.) were investigated using combined Brownian and molecular dynamics simulations and hierarchical cluster analysis. In higher plants and green algae, electrostatic interactions force plastocyanin molecule close to the heme of cytochrome f.
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