Abstract During outgrowth of the radicle of cress ( Lepidium sativum L.) the statocytes of the root cap develop a structural polarity with the nucleus at the proximal cell pole and a complex of endoplasmic reticulum (ER) at the distal cell pole. Amyloplasts sediment upon this complex of ER. During all stages of development of the cytoskeleton (microtubules, microfilaments) is involved in positioning of the ER. The structural polarity of the statocytes develops independently of gravity, as indicated by corresponding results from fast and slow rotating clinostats and roots grown under microgravity in orbit. Disturbance of the structural polarity is possible by application of drugs, influencing microtubules and microfilaments. If, by rotation of roots on slow rotating clinostats or centrifugation, the structural polarity of the statocytes is changed, the ability of the roots to perceive gravity is affected also.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Polarity of root statocytes—Relevance for graviperception


    Beteiligte:
    Hensel, W. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1987


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    An Active Role of the Amyloplasts and Nuclei of Root Statocytes in Graviperception

    Kordyum, E. / Guikema, J. | British Library Conference Proceedings | 2001




    Structure of Cress Root Statocytes in Microgravity (Bion-10 Mission)

    Laurinavicius, R. / Stockus, A. / Buchen, B. et al. | British Library Conference Proceedings | 1995


    Putative Graviperception Mechanisms of Protists

    Block, I. / Freiberger, N. / Gavrilova, O. et al. | British Library Conference Proceedings | 1999