Studies on the energetics of radial water transport in bean root

• Autorzy: Kargol M. , Markowski A. , Suchanek G. , Przestalski S.
• Języki publikacji: EN

Abstrakty

EN

In this work the energetics of water transport along the radial path of bean root (Phaseolus vulgaris L) and water elevation along the xylem induced by osmotically generated root pressure was studied. The radial path of the root was, according to Fiscus's concept [1,2], approximately modelled by a 1-membrane system. An analytical method by Kargol [5] (concerning the osmo-diffusive conversion of free energy) and data from a work by Steudle [9] (on permeation parameters of the root, i.e., filtration coefficient Lp, reflection coefficient a and permeability coefficient co) were applied in this study. This work shows that the energetical efficiency of the root of that plant does not depend on concentration, C0 of the root bathing solution (the medium) within the concentration range: 0

Słowa kluczowe

EN

energetic efficiency; diffusion; osmosis; bean; Phaseolus vulgaris; power; water transport; energy conversion; root

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 1993
• Tom: 02
• Numer: 4
• Opis fizyczny: p.25-28,fig.,ref.

Twórcy

autor

Kargol M.

• Pedagogical University, Lesna 16, 25-509 Kielce, Poland

autor

Markowski A.

autor

Suchanek G.

autor

Przestalski S.

Bibliografia

• FISCUS E.L. The interaction between osmotic- and pressure-induced water flow in plant roots. Plant. Physiol., 55. 917-922, 1975.
• FISCUS E.L. Diurnal changes in volume and solute transport coefficients of phaseolus roots. Plant. Physiol., 80, 752-759,1986.
• KARGOL M. Korzeń roślinny jako membranowy osmoty- cznodyfuzyjny przetwornik energii swobodnej. VI Ogólnopolskie Sympozjum ’’Błony Biologiczne”, Łódź 7-8 czerwca 1991, pp 12-22.
• KARGOL M. Studies of osmo-diffusive and energetic properties of the maize root. Gen. Physiol. Biophys., 11, 181-194, 1992.
• KARGOL M. A practical method for the analysis of osmo- ticand-diffusive energy conversion. Gen. Physiol. Biophys., 9, 19-28,1990.
• KARGOL M., FISCUS E.L. Energetic aspect of radial water transport across the phaseolus root - submitted for publication.
• KARGOL M., SUCHANEK G. Energetic aspect of the membrane symplasm model of Ginsburg. Acta Physiolo- giae Plantarum, 12, 201-207, 1990.
• KEDEM O., KATCHALSKY A. Thermodynamic analysis of the permeability of biological membranes to non-electrolytes. Biochim. Biophys. Acta, 27, 229-246, 1958.
• STEUDLE E. Methods for studying water relations of plant cells and tissues. Measurement Techniaues in Plant Science, Eds. Y. Hashimoto, H. Nonami, PJ. Kramer and B.R. Strain, Academic Press, San Diego, pp. 113-150,1990.
• STEUDLE E. Water flow in plants and its coupling to other processes an overview. In: Methods of Enzymology, Vol. 174, Eds. S. Fleischer and B. Fleischer, Acad. Press, New York, pp. 183-225, 1989.