Spatial distribution of cell turgor pressure, cell osmotic pressure and relative elemental growth rate were measured in growing tall fescue leaves (Festuca arundinacea). Cell turgor pressure (measured with a pressure probe) was c. 0.55 MPa in expanding cells but increased steeply (+0.3 MPa) in cells where elongation had stopped. However, cell osmotic pressure (measured with a picolitre osmometer) was almost constant at 0.85 MPa throughout the leaf. The water potential difference between the growth zone and the mature zone (0.3 MPa) was interpreted as a growth-induced water potential gradient. This and further implications for the mechanism of growth control are discussed.
%0 Journal Article
%1 citeulike:2021995
%A Martre, Pierre
%A Bogeat-Triboulot, Marie-Beatrice
%A Durand, Jean L. O. U. I. S.
%D 1999
%J New Phytologist
%K citeulikeExport grass, hydraulics
%N 3
%P 435--439
%R 10.1046/j.1469-8137.1999.00405.x
%T Measurement of a growth-induced water potential gradient in tall fescue leaves
%U http://dx.doi.org/10.1046/j.1469-8137.1999.00405.x
%V 142
%X Spatial distribution of cell turgor pressure, cell osmotic pressure and relative elemental growth rate were measured in growing tall fescue leaves (Festuca arundinacea). Cell turgor pressure (measured with a pressure probe) was c. 0.55 MPa in expanding cells but increased steeply (+0.3 MPa) in cells where elongation had stopped. However, cell osmotic pressure (measured with a picolitre osmometer) was almost constant at 0.85 MPa throughout the leaf. The water potential difference between the growth zone and the mature zone (0.3 MPa) was interpreted as a growth-induced water potential gradient. This and further implications for the mechanism of growth control are discussed.
@article{citeulike:2021995,
abstract = {{Spatial distribution of cell turgor pressure, cell osmotic pressure and relative elemental growth rate were measured in growing tall fescue leaves (Festuca arundinacea). Cell turgor pressure (measured with a pressure probe) was c. 0.55 MPa in expanding cells but increased steeply (+0.3 MPa) in cells where elongation had stopped. However, cell osmotic pressure (measured with a picolitre osmometer) was almost constant at 0.85 MPa throughout the leaf. The water potential difference between the growth zone and the mature zone (0.3 MPa) was interpreted as a growth-induced water potential gradient. This and further implications for the mechanism of growth control are discussed.}},
added-at = {2019-03-31T01:14:40.000+0100},
author = {Martre, Pierre and Bogeat-Triboulot, Marie-Beatrice and Durand, Jean L. O. U. I. S.},
biburl = {https://www.bibsonomy.org/bibtex/2902fc3333c79d6769c17600db64a9d07/dianella},
citeulike-article-id = {2021995},
citeulike-linkout-0 = {http://www.blackwell-synergy.com/doi/abs/10.1046/j.1469-8137.1999.00405.x},
citeulike-linkout-1 = {http://dx.doi.org/10.1046/j.1469-8137.1999.00405.x},
doi = {10.1046/j.1469-8137.1999.00405.x},
interhash = {4a9c766e0da1a3f531dfdae5914afe70},
intrahash = {902fc3333c79d6769c17600db64a9d07},
journal = {New Phytologist},
keywords = {citeulikeExport grass, hydraulics},
number = 3,
pages = {435--439},
posted-at = {2007-11-30 05:19:18},
priority = {2},
timestamp = {2019-03-31T01:16:26.000+0100},
title = {{Measurement of a growth-induced water potential gradient in tall fescue leaves}},
url = {http://dx.doi.org/10.1046/j.1469-8137.1999.00405.x},
volume = 142,
year = 1999
}