Oscillatory Plant Transpiration: Problem of a Mathematically Correct Model

  • I. Gumowski
Part of the NATO ASI Series book series (NSSA, volume 138)


Oscillatory water transpiration is known to occur in many plant species with a repetition rate of the order of 30 minutes. The transpiration rhythm is directly related to a cyclic variation of stomatal apertures, and indirectly to the water content of guard, subsidiary and mesophyll cells. There exists a large number of accurately measured oscillation wave forms, some of which appear to be chaotic. A lumped-element hydraulic elastic model of the water transport was formulated in 1972, without specifying explicitly the forces responsible for the upward movement of water. An analysis of the implications of this model has disclosed an agreement with some observed properties, in particular the frequency of periodic oscillations, and a qualitative and quantitative disagreement with others, in particular the oscillation wave forms, as well as the response of the latter to various physical and chemical perturbations. The argument is re-examined and an improved model is proposed.


Guard Cell Water Transport Mesophyll Cell Surface Tension Force Stomatal Aperture 
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Copyright information

© Springer Science+Business Media New York 1987

Authors and Affiliations

  • I. Gumowski
    • 1
  1. 1.University of Toulouse 3ToulouseFrance

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