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Two proteins regulate the cell wall extensibility and the yield threshold in glycerinated hollow cylinders of cowpea hypocotyl

Two proteins regulate the cell wall extensibility and the yield threshold in glycerinated hollow... ABSTRACT Glycerinated hollow cylinders of hypocotyl segments excised from the elongation region of cowpea seedlings were heated for 15s in 50% glycerol at 70, 80 or 90°C. Their in vitro yield threshold tension (y) and extensibility (φ) were determined by stress‐strain experiments under the perfusion of solutions of pH 4·0 or 6·2. The decrement in y and the increment in φ with acidification were extinguished at 80 and 90°C, respectively. Moreover, such changes in φ and y with acidification were prevented by proteinase treatment for 6 and 10 h, respectively. These results suggest that these two cell wall mechanical properties are controlled, respectively, by two functional proteins activated by acid. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Cell & Environment Wiley

Two proteins regulate the cell wall extensibility and the yield threshold in glycerinated hollow cylinders of cowpea hypocotyl

Plant Cell & Environment , Volume 18 (7) – Jul 1, 1995

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References (19)

Publisher
Wiley
Copyright
Copyright © 1995 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0140-7791
eISSN
1365-3040
DOI
10.1111/j.1365-3040.1995.tb00589.x
Publisher site
See Article on Publisher Site

Abstract

ABSTRACT Glycerinated hollow cylinders of hypocotyl segments excised from the elongation region of cowpea seedlings were heated for 15s in 50% glycerol at 70, 80 or 90°C. Their in vitro yield threshold tension (y) and extensibility (φ) were determined by stress‐strain experiments under the perfusion of solutions of pH 4·0 or 6·2. The decrement in y and the increment in φ with acidification were extinguished at 80 and 90°C, respectively. Moreover, such changes in φ and y with acidification were prevented by proteinase treatment for 6 and 10 h, respectively. These results suggest that these two cell wall mechanical properties are controlled, respectively, by two functional proteins activated by acid.

Journal

Plant Cell & EnvironmentWiley

Published: Jul 1, 1995

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