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Regulation of Transplasmalemma Electron Transport by Calcium and Light in Oat Mesophyll Cells

  • Suranganee Dharmawardhane
  • Bernard Rubinstein
  • Arthur I. Stern
Part of the NATO ASI Series book series (NSSA, volume 7)

Abstract

The transport of electrons across the plasmalemma from a cytosolic donor to an extracellular acceptor can provide an energy source capable of regulating cellular events. Calcium ions and light, either alone or interacting in some way, control important activities in the cell and evidence exists that both effectors also influence rates of transplasmalemma electron flow.1,2,3,4 We have been attempting to characterize further calcium and light effects on cell surface redox activity. If redox activity and a particular cellular process are both regulated by calcium and/or light, then the possibility exists that redox activity mediates the action of these effectors. An indication that such a relationship may exist with respect to blue light has been obtained in vitro. In this case, the same wavelengths of blue light that lead to absorbance changes characteristic of a reduced b-type cytochrome, are also active in phototropism.5,6

Keywords

Mesophyll Cell Phorbol Myristate Acetate Phorbol Ester Leaf Segment Phorbol Myristate Acetate 
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.

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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Suranganee Dharmawardhane
    • 1
  • Bernard Rubinstein
    • 1
  • Arthur I. Stern
    • 1
  1. 1.Botany DepartmentUniversity of MassachusettsAmherstUSA

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