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On the nature of root pressure

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Structure and Function of Plant Roots

Part of the book series: Developments in Plant and Soil Sciences ((DPSS,volume 4))

Abstract

According to the osmotic conception, the moving force of exudation is determined merely by the difference of the osmotic pressure between the xylem sap and ambient solution; so exudation is impossible in hypertonic solutions. However, it was found by some authors [2,4,5], that the osmotic pressure of the ambient solution (OPe), which stopped exudation, considerably exceeded the osmotic pressure of the exudate (OPi). Thus there exists a non-osmotic component (NOC) of root pressure.

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References

  1. Abutalybov, V. F., Shushanashvili, V. I. and Zholkevich, V. N. 1980 Isolation of actin-like protein from sunflower roots. Doklady Akademii nauk USSR 252, 1023–1024.

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  2. Broyer, T. C. 1951 Exudation studies on the water relations of plants. Amer. J. Bot. 38,157–162.

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  3. Zholkevich, V. N., Sinitsina, Z. A., Peisakhzon, B. I., Abutalybov, V. F. and D’yachenko, I. V. 1979 On the nature of root pressure. Phyziologiya rastenii 26, 978–993.

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  4. Mozhaeva, L. V. and Pil’shchikova, N. V. 1972 On the nature of pumping water process by plant roots. Izvestiya Timiriazevskoi selskochozaistvennoi akademii 3, 3–15.

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  5. Overbeek, J. van 1942 Water uptake by excised root systems of the tomato due to non-osmotic forces. Amer. J. Bot. 29, 677–682.

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Authors and Affiliations

  1. K.A. Timiriazev Plant Physiology Institute, Academy of Sciences of the U.S.S.R, Moscow, U.S.S.R.

    Vladimir N. Zholkevich

Authors
  1. Vladimir N. Zholkevich
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Editor information

Editors and Affiliations

  1. Botanical Laboratory, State University of Utrecht, Lange Nieuwstraat, 106-3512 PN, Utrecht, The Netherlands

    R. Brouwer

  2. Institute of Experimental Biology and Ecology, Slovak Academy of Sciences, 885 34, Bratislava, Czechoslovakia

    O. Gašparíková

  3. Institute of Experimental Biology and Ecology SAV, 885 34, Bratislava, Czechoslovakia

    J. Kolek

  4. Department of Agricultural Science, University of Oxford, Parks Road, OX1 3PP, Oxford, UK

    B. C. Loughman

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© 1981 Martinus Nijhoff/Dr W. Junk Publishers, The Hague/Boston/London

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Zholkevich, V.N. (1981). On the nature of root pressure. In: Brouwer, R., Gašparíková, O., Kolek, J., Loughman, B.C. (eds) Structure and Function of Plant Roots. Developments in Plant and Soil Sciences, vol 4. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8314-4_30

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  • DOI: https://doi.org/10.1007/978-94-009-8314-4_30

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-8316-8

  • Online ISBN: 978-94-009-8314-4

  • eBook Packages: Springer Book Archive

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