Water Transport in Root Systems and the Nature of Root Pressure

  • Vladimir N. Zholkevich

Abstract

So far some authors have reduced the water transport mechanism in plants to simple ultra-filtration and mass flow under the pressure generated by a water potential gradient in a soil-plant-atmosphere system. From such a point of view a plant behaves like a canal between soil and atmosphere. Sometimes attempts are even made to draw a parallel between uprising water flow in plant and water movement along a strip of blotting paper whose lower end is immersed into a glass of water. Although water is transported in plants for functioning living cells, it follows, that these cells do not promote water flow; on the contrary, they only resist it. However, a series of facts contradicts such simplified schemes and evidences for an active part of the parenchyma cells in water movement along the plant. We shall refer to only some of these facts concerning water transport in root systems.

Keywords

Water Uptake Water Transport Cell Membrane Structure Root Pressure Water Potential Gradient 
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 1985

Authors and Affiliations

  • Vladimir N. Zholkevich
    • 1
  1. 1.K.A.Timiriazev Institute of Plant PhysiologyAcademy of Sciences of the USSRMoscowUSSR

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