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Xylem conduits transport water: plants

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Xylem conduits of Ficus sp / Youssef Bout.. / LicenseGFDL - Gnu Free Document License

Xylem conduits in plants transport water from soil to leaves through a pulling force generated when water evaporates at the surface of leaves creating a negative pressure gradient.

BIOMIMICRY TAXONOMY
Summary
"The transport system that drives sap ascent from soil to leaves is extraordinary and controversial. More than a century ago, H. H. Dixon (1896) proposed that a pulling force was generated at the evaporative surface of leaves and that this force was transmitted downward through water columns under tension to lift water much like a rope under tension can lift a weight. The cohesion–tension theory (C–T theory), as it is known, supposes both adhesion of water to conduit walls and cohesion of water molecules to each other." (Tyree 2003: 923)
About the inspiring organism
Plantae
Plantae

Learn more at EOL.org
Organism/taxonomy data provided by:
Species 2000 & ITIS Catalogue of Life: 2008 Annual Checklist


Bioinspired products and application ideas

Application Ideas: Use passive mechanism to pump water for storage on roofs for drinking and other uses, or to a height where its decent drives power generating turbines.

Industrial Sector(s) interested in this strategy: Power generation, water utilities

Experts
Melvin T. Tyree

Tree Physiology Laboratory, Department of Renewable Resources, University of Alberta
References
Tyree, Melvin T. 2003. Plant hydraulics: The ascent of water. Nature. 423(6943): 923-923.
Learn More at Google Scholar Google Scholar  

Comments

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rockwell777
over 6 years ago
sorry. I flagged this entry by accident.
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biomax
over 6 years ago
Hi Melvin, I'm very interested in your idea here and even read the article you wrote. I have a practical use for this idea and would like to discuss it with you.
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biomax
over 6 years ago
Here's another reference source for the Cohesion-Tension Theory:
http://en.wikipedia.org/wiki/Cohesion-tension_theory
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