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Mitosis and Cytokinesis in Funaria are Accompanied by Inward Current Localized at the Nuclear Zone

  • Mary Jane Saunders
Part of the NATO ASI Series book series (volume 104)

Abstract

A trigger for cell division in a wide variety of systems has been postulated to result from ionic fluxes (particularly Ca2+) across the plasma membrane. Furthermore, it has been proposed that control of the different stages of mitosis (in particular the metaphase/anaphase transition) may be regulated by spatially localized increases in intracellular Ca2+ concentration ([Ca2+]i) that are controlled by an endomembrane system (Wolniak and Hepler, 1983). Calcium has also been implicated in the regulation of the cytokinetic apparatus in plant cells (see Gunning, 1982). In an attempt to elucidate the role of ion currents in mitosis and cytokinesis I investigated temporal and spatial localization of ion fluxes across the plasma membrane of dividing tip-growing filamentous Funaria hygrometrica cells.

Keywords

Nuclear Region Cross Wall Endomembrane System Platinum Black Nuclear Envelope Breakdown 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Gunning, B. E. S., 1982, The cytokinetic apparatus: Its development and spatial regulation in: “The Cytoskeleton in Plant Growth and Development,” C. L. Lloyd, ed., Academic Press, London.Google Scholar
  2. Jaffe, L. H. and Nuccitelli, R., 1974, An ultrasensitive vibrating probe for measuring steady external currents, J. Cell Biol., 63: 614.CrossRefGoogle Scholar
  3. Mineyuki, Y., Yamada M., Takagi, M., Wada, M., Furuya, M., 1983, A digital image processing technique for the analysis of particle movements: Its application to organelle movements during mitosis in Adiantum protonemata, Plant and Cell Physiol, 24: 225.CrossRefGoogle Scholar
  4. Schmiedel, G., Schnepf, E., 1980, Polarity and growth of caulonema tip cells of the moss Funaria hygrometrica, PIanta, 147: 405.CrossRefGoogle Scholar
  5. Wolniak, S. N., Hepler, P. K. and Jackson, W. T., 1983, Ionic changes in the mitotic apparatus at the metaphase/anaphase transition, J. Cell Biol., 96: 598–605.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Mary Jane Saunders
    • 1
  1. 1.Botany DepartmentLouisiana State UniversityBaton RougeUSA

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