Ultrastructural Aspects of Georeceptors in Roots

  • A. Sievers
  • D. Volkmann
Part of the Proceedings in Life Sciences book series (LIFE SCIENCES)


The statocytes of the root caps are characterized by sedimentable amyloplasts as well as by a striking endoplasmatic reticulum. Those of Lepidium sativum L. are strongly polarized whereby the rough endoplasmatic reticulum (ER complex) is arranged at the distal cell pole. In normal position of the root, the amyloplasts are sedimented on it. Functional relationships between both organelles indicate that they bring about graviperception. After experimental influence on the root by rotation on clinostats and forced inversion, the original polarity of the statocytes remains basically unchanged. However, in addition to the distal ER complex, the formation of further ER complexes is inducible, depending on the direction of gravity. Abscisic acid inhibits the development of cell polarity. Long-term rotation on the classical clinostat and an electrical field disturb the polar arrangement of the cell organelles in the statocytes.


Endoplasmatic Reticulum Plant Growth Substance Endoplasmatic Reticulum Cisterna Lepidium Sativum Basal Meristem 
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  1. 1.
    Audus, L.J.: In: The Development and Function of Roots. Torrey, J.G., Clarkson, D.T. (eds.) London: Academic Press, 1975, p. 327Google Scholar
  2. 2.
    Behrens, H.M.: unpublishedGoogle Scholar
  3. 3.
    Fitting, H.: Jahrb. Wiss. Botan. 41, 221 (1905)Google Scholar
  4. 4.
    Griffiths, H.J., Audus, L.J.: New Phytologist 63, 319 (1964)CrossRefGoogle Scholar
  5. 5.
    Haberkorn, H.: Abstr. Intern. Assoc. Plant Physiology, Würzburg (1974)Google Scholar
  6. 6.
    Hensel, W., Sievers, A.: Abstract, 9th Intern. Conf. on Plant Growth Substances, Lausanne (1976)Google Scholar
  7. 7.
    Iversen, T.-H.: Physiol. Plantarum 22, 1251 (1969)CrossRefGoogle Scholar
  8. 8.
    Iversen, T.-H., Larsen, P.: Physiol. Plantarum 28, 172 (1973)CrossRefGoogle Scholar
  9. 9.
    Juniper, B.E., Barlow, P.W.: Planta 89, 352 (1969)CrossRefGoogle Scholar
  10. 10.
    Juniper, B.E., French, A.: Planta 95, 314 (1970)CrossRefGoogle Scholar
  11. 11.
    Juniper, B.E., French, A.: Planta 109, 211 (1973)CrossRefGoogle Scholar
  12. 12.
    Larsen, P.: Physiol. Plantarum 10, 127 (1957)CrossRefGoogle Scholar
  13. 13.
    Perbal, G.: C.R.Acad. Sci. Paris 273, 789 (1971)Google Scholar
  14. 14.
    Pickard, B.G.: Can. J. Botany 51, 1003 (1973)CrossRefGoogle Scholar
  15. 15.
    Schmitz, U.: Abstr., Intern. Assoc. Plant Physiology, Würzburg (1974)Google Scholar
  16. 16.
    Schmitz, U.: unpublishedGoogle Scholar
  17. 17.
    Schrank, A.R.: In: Encycl. Plant Physiol. Ruhland, W. (ed.). Berlin: Springer, 17 (1), 148 (1959)Google Scholar
  18. 18.
    Shen-Miller, J., Hinchman, R.R.: Bioscience 24, 643 (1974)CrossRefGoogle Scholar
  19. 19.
    Shen-Miller, J., Hinchman, R.R., Gordon, S.A.: Plant Physiol. 43, 338 (1968)PubMedCrossRefGoogle Scholar
  20. 20.
    Sievers, A.: Z. Zellforschung 64, 280 (1964)Google Scholar
  21. 21.
    Sievers, A., Schmitz, U.: Planta 114, 373 (1973)CrossRefGoogle Scholar
  22. 22.
    Sievers, A., Volkmann, D.: Planta 102, 160 (1972)CrossRefGoogle Scholar
  23. 23.
    Sievers, A., Volkmann, D., Hensel, W., Sobick, V., Briegleb, W.: Naturwissenschaften 63, 343 (1976)CrossRefGoogle Scholar
  24. 24.
    Sobick, V., Sievers, A., Volkmann, D., Briegleb, W.: Abstr., 9th Int. Conf. Plant Growth Substances, Lausanne (1976)Google Scholar
  25. 25.
    Volkmann, D.: Protoplasma 79, 159 (1974)CrossRefGoogle Scholar
  26. 26.
    Volkmann, D.: Planta 136, 89 (1976)CrossRefGoogle Scholar
  27. 27.
    Volkmann, D.: Abstr., 9th Intern. Conf. Plant Growth Substances, Lausanne (1976)Google Scholar
  28. 28.
    Volkmann, D., Sievers, A.: Planta 127, 11 (1975)CrossRefGoogle Scholar
  29. 29.
    Wilkins, M.B.: Sci. Prog. (Oxford) 63, 187 (1976)Google Scholar

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© Springer-Verlag Berlin Heidelberg 1977

Authors and Affiliations

  • A. Sievers
  • D. Volkmann

There are no affiliations available

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