Plant Physiol.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

First published online October 2, 2003; 10.1104/pp.103.028662

Plant Physiology 133:1261-1271 (2003)
© 2003 American Society of Plant Biologists

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
133/3/1261    most recent
pp.103.028662v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (27)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Müssig, C.
Right arrow Articles by Altmann, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Müssig, C.
Right arrow Articles by Altmann, T.
Agricola
Right arrow Articles by Müssig, C.
Right arrow Articles by Altmann, T.
DEVELOPMENT AND HORMONE ACTION

Brassinosteroids Promote Root Growth in Arabidopsis

Carsten Müssig*, Ga-Hee Shin and Thomas Altmann

Universität Potsdam, Institut für Biochemie und Biologie, Genetik, c/o Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, 14476 Golm, Germany

Although brassinosteroids (BRs) are known to regulate shoot growth, their role in the regulation of root growth is less clear. We show that low concentrations of BRs such as 24-epicastasterone and 24-epibrassinolide promote root elongation in Arabidopsis wild-type plants up to 50% and in BR-deficient mutants such as dwf1-6 (cbb1) and cbb3 (which is allelic to cpd) up to 150%. The growth-stimulating effect of exogenous BRs is not reduced by the auxin transport inhibitor 2,3,5-triidobenzoic acid. BR-deficient mutants show normal gravitropism, and 2,3,5-triidobenzoic acid or higher concentrations of 2,4-dichlorophenoxyacetic acid and naphtaleneacetic acid inhibit root growth in the mutants to the same extent as in wild-type plants. Simultaneous administration of 24-epibrassinolide and 2,4-dichlorophenoxyacetic acid results in largely additive effects. Exogenous gibberellins do not promote root elongation in the BR-deficient mutants, and the sensitivity to the ethylene precursor 1-aminocyclopropane-1-carboxylic acid is not altered. Thus, the root growth-stimulating effect of BRs appears to be largely independent of auxin and gibberellin action. Furthermore, we analyzed BR interactions with other phytohormones on the gene expression level. Only a limited set of auxin- and ethylene-related genes showed altered expression levels. Genes related to other phytohormones barely showed changes, providing further evidence for an autonomous stimulatory effect of BR on root growth.

Article, publication date, and citation information can be found at www.plantphysiol.org/cgi/doi/10.1104/pp.103.028662.

* Corresponding author; e-mail muessig{at}mpimp-golm.mpg.de; fax 49–331–5250.

Received June 18, 2003; returned for revision July 11, 2003; accepted July 21, 2003.




This article has been cited by other articles:


Home page
 Proc. Natl. Acad. Sci. USAHome page
K. T. Kuppusamy, A. Y. Chen, and J. L. Nemhauser
Steroids are required for epidermal cell fate establishment in Arabidopsis roots
PNAS, May 12, 2009; 106(19): 8073 - 8076.
[Abstract] [Full Text] [PDF]

Home page
 Mol PlantHome page
W.D. Teale, F.A. Ditengou, A.D. Dovzhenko, X. Li, A.M. Molendijk, B. Ruperti, I. Paponov, and K. Palme
Auxin as a Model for the Integration of Hormonal Signal Processing and Transduction
Mol Plant, March 1, 2008; 1(2): 229 - 237.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
N. Holton, A. Cano-Delgado, K. Harrison, T. Montoya, J. Chory, and G. J. Bishop
Tomato BRASSINOSTEROID INSENSITIVE1 Is Required for Systemin-Induced Root Elongation in Solanum pimpinellifolium but Is Not Essential for Wound Signaling
PLANT CELL, May 1, 2007; 19(5): 1709 - 1717.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
L. Li, J. Xu, Z.-H. Xu, and H.-W. Xue
Brassinosteroids Stimulate Plant Tropisms through Modulation of Polar Auxin Transport in Brassica and Arabidopsis
PLANT CELL, October 1, 2005; 17(10): 2738 - 2753.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
A. Yamazoe, K.-i. Hayashi, S. Kepinski, O. Leyser, and H. Nozaki
Characterization of Terfestatin A, a New Specific Inhibitor for Auxin Signaling
Plant Physiology, October 1, 2005; 139(2): 779 - 789.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
T. Nawy, J.-Y. Lee, J. Colinas, J. Y. Wang, S. C. Thongrod, J. E. Malamy, K. Birnbaum, and P. N. Benfey
Transcriptional Profile of the Arabidopsis Root Quiescent Center
PLANT CELL, July 1, 2005; 17(7): 1908 - 1925.
[Abstract] [Full Text] [PDF]

Home page
 Nucleic Acids ResHome page
J. Lisso, D. Steinhauser, T. Altmann, J. Kopka, and C. Mussig
Identification of brassinosteroid-related genes by means of transcript co-response analyses
Nucleic Acids Res., May 12, 2005; 33(8): 2685 - 2696.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
M. Nakamura, T. Satoh, S.-I. Tanaka, N. Mochizuki, T. Yokota, and A. Nagatani
Activation of the cytochrome P450 gene, CYP72C1, reduces the levels of active brassinosteroids in vivo
J. Exp. Bot., March 1, 2005; 56(413): 833 - 840.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
R. C. Meyer, O. Torjek, M. Becher, and T. Altmann
Heterosis of Biomass Production in Arabidopsis. Establishment during Early Development
Plant Physiology, April 1, 2004; 134(4): 1813 - 1823.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2003 by the American Society of Plant Biologists