Abstract
The effect of different concentrations of NaCl on photosynthetic parameters and structural components of membranes of Hydrilla verticillata has been studied. The effect of NaCl in the concentration range of 5–10 g/L for 24 h leads to an increase in photosynthesis, pigment content, and lipid component rearrangement. A negative effect on membrane permeability and photosynthesis is observed under the action of NaCl at a concentration of 20 g/L. A decrease in the relative content of monogalactosyldiacylglycerol and an increase in digalactosyldiacylglycerol and sulfolipid are found in glycolipids. In the fraction of phospholipids, the relative content of phosphatidyl -choline, -ethanolamine, -inositol decreases and the contribution of phosphatidylglycerol increases with increasing NaCl concentration. Changes in the sterol component of membranes are associated with a decrease in the concentration of stigmasterol and increase in β-sitosterol. Adaptive rearrangements in the composition of pigments and membrane structure indicate a high functional activity of the photosynthetic apparatus of H. verticillata, which allows this species to achieve stability in saline ecotopes.
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This work was carried out as part of the state program Ecological Regularities of the Sustainable Functioning of Ecosystems and the Resource Potential of the Volga Basin” AAAA-A17-117112040039-7.
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Rozentsvet, O.A., Nesterov, V.N., Bogdanova, E.S. et al. Effect of NaCl on Photosynthetic Parameters and Structural Components of Membranes in Macrophyte Hydrilla verticillata (L.f.) Royle. Inland Water Biol 12, 326–332 (2019). https://doi.org/10.1134/S1995082919030131
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DOI: https://doi.org/10.1134/S1995082919030131