DOI: https://doi.org/10.30970/jps.03.70
THE TURGOR PRESSURE IN THE SUGAR-BEET TISSUE UNDER LOW TEMPERATURES
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Journal of Physical Studies 3(1), 70–75 (1999)
DOI: https://doi.org/10.30970/jps.03.70 THE TURGOR PRESSURE IN THE SUGAR-BEET TISSUE UNDER LOW TEMPERATURES |
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L. A. Bulavin, Yu. F. Zabashta, A. Ya. Fridman
Kiev National Taras
Shevchenko University,
Department of Physics
6 akad. Hlushkova Pr., Kyiv, UA-252022, Ukraine
The microscopic mechanism of water transference from a cell to the space between cells is investigated under low temperatures. The study is based on the data about the turgor pressure behaviour. This data is determined with the help of the method suggested by the authors of determining the turgor pressure by the shear modulus values. The theoretical basis of this method is given with the use of the nonlinear theory of elasticity. The shear modulus of the sugar–beet is measured under the temperatures 253$< T < $290~K. The temperature interval is determined in which the shear modulus is equal to the turgor pressure. The osmos pressure in the sugar–beet tissue is evaluated theoretically. From comparing the theoretical osmos pressure and the experimental values of the turgor pressure the conclusion is drawn that water from a cell to the space between cells is moved by the active transport, a mechanism of this motion is suggested. In the authors' opinion this mechanism reveals the motion of the deformation solitons along the water chains which are within canals in walls of the plasmalemma.