Compression method for measurement of stress-relaxation properties of plant cell walls with reference to plant hormone actions

Issue title: Perspectives in Biorheology. Festschrift for A.L. Copley

Guest editors: Alexander Silberberg

Article type: Research Article

Authors: Yamamoto, Ryoichi^a | Fujihara, Suguru^b | Masuda, Yoshio^a

Affiliations: [a] Department of Biology, Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka 558, Japan | [b] Science Education Institute of Sakai City, Mozukahata, Sakai 591, Japan

Note: [] Invited by: Editor A. Silberberg

Abstract: A compression method for measurement of stress-relaxation proper- ties of the cell wall of storage tissues was developed, and the stress relaxation for the cell wall of Jerusalem artichoke tuber tissue was found to be represented by the equation S=bp·log(t+Tmp)(1+tpt+Tmp)t+Tmptp(t+Top)(1+tpt+Top)t+Toptp+cp where S is stress, t is time and bp, Top, Tmp and cp are constants. A synthetic auxin, 2,4-dichlorophenoxyacetic acid, induced cell wall loosening represented by a decrease in Top prior to the induction of expansion growth. Auxin and gibberellin synergistically stimulated the increase in bp and the decrease in cp in 2–3 days.

Keywords: Stress-relaxation, Jerusalem artichoke, Auxin, Gibberellin, Cell wall

DOI: 10.3233/BIR-1981-183-626

Journal: Biorheology, vol. 18, no. 3-6, pp. 643-652, 1981