Crossref journal-article
Wiley
The Plant Journal (311)
Abstract

SummaryThe plant hormones gibberellin (GA), ethylene and auxin can promote hypocotyl elongation of Arabidopsis seedlings grown in the light on a low nutrient medium (LNM). In this study, we used hypocotyl elongation as a system to investigate interactions between GA and ethylene or auxin and analysed their influence on the development of stomata in the hypocotyl. When applied together, GA and ethylene or auxin exerted a synergistic effect on hypocotyl elongation. Stimulated cell elongation is the main cause of hypocotyl elongation. Furthermore, hypocotyls treated with GA plus either ethylene or auxin show an increased endoreduplication. In addition, a small but significant increase in cell number was observed in the cortical cell files of hypocotyls treated with ethylene and GA together. However, studies with transgenic seedlings expressing CycB1::uidA genes revealed that cell division in the hypocotyl occurs only in the epidermis and mainly to form stomata, a process strictly regulated by hormones. Stomata formation in the hypocotyl is induced by the treatment with either GA or ethylene. The effect of GA could be strongly enhanced by the simultaneous addition of ethylene or auxin to the growth medium. Gibberellin is the main signal inducing stomata formation in the hypocotyl. In addition, this signal regulates hypocotyl elongation and is modulated by ethylene and auxin. The implication of these three hormones in relation to cell division and stomata formation is discussed.

Bibliography

Saibo, N. J. M., Vriezen, W. H., Beemster, G. T. S., & Van Der Straeten, D. (2003). Growth and stomata development of Arabidopsis hypocotyls are controlled by gibberellins and modulated by ethylene and auxins. The Plant Journal, 33(6), 989–1000. Portico.

Authors 4
  1. Nelson J. M. Saibo (first)
  2. Wim H. Vriezen (additional)
  3. Gerrit T. S. Beemster (additional)
  4. Dominique Van Der Straeten (additional)
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Dates
Type When
Created 20 years, 8 months ago (Dec. 29, 2004, 2:29 p.m.)
Deposited 1 year, 10 months ago (Oct. 13, 2023, 8:09 p.m.)
Indexed 1 week, 2 days ago (Aug. 23, 2025, 9:16 p.m.)
Issued 22 years, 6 months ago (March 1, 2003)
Published 22 years, 6 months ago (March 1, 2003)
Published Online 22 years, 5 months ago (March 12, 2003)
Published Print 22 years, 6 months ago (March 1, 2003)
Funders 0

None

@article{Saibo_2003, title={Growth and stomata development of Arabidopsis hypocotyls are controlled by gibberellins and modulated by ethylene and auxins}, volume={33}, ISSN={1365-313X}, url={http://dx.doi.org/10.1046/j.1365-313x.2003.01684.x}, DOI={10.1046/j.1365-313x.2003.01684.x}, number={6}, journal={The Plant Journal}, publisher={Wiley}, author={Saibo, Nelson J. M. and Vriezen, Wim H. and Beemster, Gerrit T. S. and Van Der Straeten, Dominique}, year={2003}, month=mar, pages={989–1000} }