OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

On the air permability of Populus pit

Capron, Marie and Tordjeman, Philippe and Charru, François On the air permability of Populus pit. (2012) In: 37ème Congrés de la Société de Biomécanique, 16 October 2012 - 19 October 2012 (Toulouse, France).

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
565kB

Abstract

Sap hydrodynamics in vascular cells of trees seems to be controlled by small membranes called pits. Understanding how the pit junctions regulate the sap flow and stop embolism by cavitation is today a challenging issue. The hypothesis that the pit porosity adjusts the flow under negative pressure and stops the air bubble diffusion need to be validated. In this talk, we will present the experimental results on Populus trees that support the idea that pits operate ‘passively’ in a biological point of view. This work is based on atomic force microscope (AFM) experiments, which have been realised to measure quantitatively the mechanical properties of pits at the nanoscale.

Item Type:Conference or Workshop Item (Speech)
Audience (conference):National conference without published proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Francois CHARRU
Deposited On:18 Dec 2013 15:57

Repository Staff Only: item control page