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)


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.


Nuclear Region Cross Wall Endomembrane System Platinum Black Nuclear Envelope Breakdown 
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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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