An insight into cell elasticity and load-bearing ability. Measurement and theory. Export

@article{citeulike:3440461, abstract = {We have studied the elasticity and load bearing ability of plant tissue at the cellular level, using onion (Allium cepa) epidermal cells. The Young's modulus and Poisson's ratio of the cells were obtained by loading a tensile force on onion epidermal peels of different turgor pressures, and measuring the elongation and the lateral contraction of the peels. The Young's moduli and the Poisson's ratios ranged from 3.5 to 8.0 MPa and 0.18 to 0.30, respectively. To determine the effects of cell elasticity and turgor pressure on the cell's ability to bear load, we loaded a small glass ball onto a cell and measured the projected contact area between the ball and the cell. Unlike previous studies, we considered the cell as a whole entity, and utilized the Boussinesq's solution to derive the relevant equations that related the elastic parameters and cell deformation. For cells with a turgor pressure > or = 0.34 MPa, the predicted contact area agreed well with the measured area. The equations could also predict cell turgor pressure with a deviation from the measured value of 0.01 MPa. This study gives strong support to ball tonometry, a new method of measuring cell turgor pressure.}, author = {Wei, C. and Lintilhac, P. M. and Tanguay, J. J.}, citeulike-article-id = {3440461}, citeulike-linkout-0 = {http://dx.doi.org/10.1104/pp.126.3.1129}, citeulike-linkout-1 = {http://www.plantphysiol.org/cgi/content/abstract/126/3/1129}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/11457963}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=11457963}, day = {1}, doi = {10.1104/pp.126.3.1129}, issn = {0032-0889}, journal = {Plant physiology}, keywords = {cell, mechanics}, month = {July}, number = {3}, pages = {1129--1138}, posted-at = {2008-10-22 15:19:44}, priority = {2}, title = {An insight into cell elasticity and load-bearing ability. Measurement and theory.}, url = {http://dx.doi.org/10.1104/pp.126.3.1129}, volume = {126}, year = {2001} }

TY - JOUR ID - citeulike:3440461 L3 - citeulike-article-id:3440461 N2 - We have studied the elasticity and load bearing ability of plant tissue at the cellular level, using onion (Allium cepa) epidermal cells. The Young's modulus and Poisson's ratio of the cells were obtained by loading a tensile force on onion epidermal peels of different turgor pressures, and measuring the elongation and the lateral contraction of the peels. The Young's moduli and the Poisson's ratios ranged from 3.5 to 8.0 MPa and 0.18 to 0.30, respectively. To determine the effects of cell elasticity and turgor pressure on the cell's ability to bear load, we loaded a small glass ball onto a cell and measured the projected contact area between the ball and the cell. Unlike previous studies, we considered the cell as a whole entity, and utilized the Boussinesq's solution to derive the relevant equations that related the elastic parameters and cell deformation. For cells with a turgor pressure > or = 0.34 MPa, the predicted contact area agreed well with the measured area. The equations could also predict cell turgor pressure with a deviation from the measured value of 0.01 MPa. This study gives strong support to ball tonometry, a new method of measuring cell turgor pressure. IS - 3 JF - Plant physiology SN - 0032-0889 EP - 1138 TI - An insight into cell elasticity and load-bearing ability. Measurement and theory. VL - 126 SP - 1129 KW - cell KW - mechanics AU - Wei, C AU - Lintilhac, PM AU - Tanguay, JJ PY - 2001/07/01/ UR - http://dx.doi.org/10.1104/pp.126.3.1129 ER -