Action of Fusicoccin in vivo: Physiological and Biochemical Consequences

  • E. Marrè
  • M. T. Marrè
  • G. Romani
Part of the NATO ASI Series book series (volume 27)


A large number of papers demonstrate the interest of fusicoccin (FC) for both plant physiology and plant pathology. This interest is explained by the following observations: (1) FC induces a strong stimulation of active electrogenic H+ extrusion, a process of fundamental importance for solute uptake, transport at the cell level and translocation in the plant, (2) practically all plant tissues of practically all higher plant species respond to FC, (3) the promotion of electrogenic, active H+ extrusion by FC mimicks, on an enlarged scale, the similar effect of natural important hormones such as auxin and brassinolide, while it antagonizes that of abscisic acid, (4) FC strongly influences various important physiological functions, such as mineral nutrition, growth by cell enlargement, stomata aperture (thus transpiration and photosynthesis) and the breaking of seed dormancy, these effects being apparently consequences of that on H transport, (5) recent results point to conclude that the primary target of FC is located in the plasma membrane, and that all the metabolic and physiological effects of this toxin depend on its capacity to activate the H+ transporting ATPase directly at the plasma membrane.


Oxidative Pentose Phosphate Pathway Proton Extrusion Ferricyanide Reduction Plasma Membrane Redox System Elodea Leave 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • E. Marrè
    • 1
  • M. T. Marrè
    • 1
  • G. Romani
    • 1
  1. 1.Centro del C.N.R. per la Biologia Cellulare e Molecolare delle Piante Dipartimento di BiologiaUniversitàMilanoItaly

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