Routes water can take between cells

Apoplast, symplast and vacuolar pathway

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The Apoplast Pathway

  • Cellulose walls have many water-filled spaces between the cellulose molecules
  • Water can move between spaces and between the cells
  • Water does not pass through any plasma membranes

- this means that dissolved mineral ions and salts can be carried with the water

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(http://images.tutorvista.com/content/plant-water-relations/water-movement-pathways.jpeg)

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The Symplast Pathway

  • Water enters the cell cytoplasm through the plasma membrane
  • It can then pass through the plasmodesmata (gaps in the cell wall that contain a thin strand of cytoplasm) from one cell to another
  • Therefore, the cytoplasm of adjacent cells is linked
  • One insde the cytoplasm, water can move through the continuous cytoplam from cell to cell

PLASMODESMA- fine strand of cytoplasm that links the contents of adjacent cells.

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(http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/sym_apoplast.gif)

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The Vacuolar Pathway

  • Similar to symplast
  • BUT, water not confined to cytoplasm of cells
  • It is able to enter and pass through the vacuoles as well
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(http://ves.neric.org/cabouton/socialstudies/Waters/planttransportbjorkcardinal/Absorption%20of%20water%20and%20minerals%20by%20roots_files/image004.jpg)

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