The external force method for measuring hydraulic conductivity and elastic coefficients in higher plant cells: application to multilayer tissue sections and further theoretical development
作者:
Jack M. Ferrier,
Jack Dainty,
期刊:
Canadian Journal of Botany
(NRC Available online 1978)
卷期:
Volume 56,
issue 1
页码: 22-26
ISSN:0008-4026
年代: 1978
DOI:10.1139/b78-003
出版商: NRC Research Press
数据来源: NRC
摘要:
The external force method for measuring hydraulic conductivity and elastic coefficients in higher plants cells (Ferrier and Dainty, 1977, Can. J. Bot. 55: 858–866) is applied to multilayer tissue sections, and the theoretical analysis further developed. Measurements on storage tissue cells of red beet (Beta vulgaris) and artichoke (Helianthus tuberosis) give values for the water potential equilibration time constant (τ) of between 1 and 2 min, and values for cell membrane hydraulic conductivity (Lp) between 2 × 10−7and 4 × 10−6 cm s−1 bar−1. Measurements on leaves of the aquatic plantPotamogeton lucensgive similar values for τ, and lower values forLp. Some limitations of the external force method are discussed.
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