Estimation of turgor pressure through comparison between single plant cell and pressurized shell mechanics

While plant growth is well known to rely on turgor pressure, it is challenging to quantify the contribution of turgor pressure to plant cell rheology. Here we used a custom-made micro-rheometer to quantify the viscoelastic behavior of isolated plant cells while varying their internal turgor pressure...

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Bibliographic Details
Published in:Physical biology 2017-08, Vol.14 (5), p.055002-055002
Main Authors: Durand-Smet, P, Gauquelin, E, Chastrette, N, Boudaoud, A, Asnacios, A
Format: Article
Language:English
Subjects:
Biomechanical Phenomena
Elasticity
Life Sciences
mechanics
Models, Biological
Osmotic Pressure
plant cell
Plant Cells
Rheology
turgor pressure
Viscosity
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Summary:While plant growth is well known to rely on turgor pressure, it is challenging to quantify the contribution of turgor pressure to plant cell rheology. Here we used a custom-made micro-rheometer to quantify the viscoelastic behavior of isolated plant cells while varying their internal turgor pressure. To get insight into how plant cells adapt their internal pressure to the osmolarity of their medium, we compared the mechanical behavior of single plant cells to that of a simple, passive, pressurized shell: a soccer ball. While both systems exhibited the same qualitative behavior, a simple mechanical model allowed us to quantify turgor pressure regulation at the single cell scale.
ISSN:1478-3975
1478-3967
1478-3975
DOI:10.1088/1478-3975/aa7f30