Water in the Soil-Plant-Atmosphere Continuum

  • J. B. Passioura
Part of the Encyclopedia of Plant Physiology book series (PLANT, volume 12 / B)


When higher plants assimilate carbon dioxide they inevitably lose water. Evolution has provided these plants with facilities both to control and to make good this loss, so as to maintain adequate hydration of their tissues. The development of roots and a vascular system enabled plants to invade the land by ensuring a supply of water to their shoots; the development of a cuticle punctured with stomata enabled them to conserve water when the supply from their roots was outstripped by the evaporative demand.


Water Potential Stomatal Conductance Relative Water Content Leaf Area Index Transpiration Rate 
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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  • J. B. Passioura

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