Transport in Plants

Root pressure and guttation

  • Guttation is the process of release of water droplets from the margins of the leaves through a special pore called Hydathodes.
  • Water droplets are impure, comprising organic and inorganic solutes.
  • Guttation is due to a root pressure and is not shown by all plants.
  • Salt injury is a phenomenon, when salts are redissolved back into leaves.
  • Root pressure theory was proposed by Joseph priestley , that states that it is a positive pressure that develops in the Xylem of roots and the theory holds good only for herbs.

View this video for the topic Root pressure and guttation from 21:19 to 28:01

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