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AOBPreview published online on July 18, 2005
Annals of Botany, doi:10.1093/aob/mci208
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© The Author 2005. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org
Received October 25, 2004
Revised January 20, 2005
Accepted February 25, 2005

Special Issue: Invited Review

New Perspectives in Flooding Research: the Use of Shade Avoidance and Arabidopsis thaliana

RONALD PIERIK 1 {dagger}, FRANK F. MILLENAAR 1 {dagger}, ANTON J. M. PEETERS 1, and LAURENTIUS A. C. J. VOESENEK 1*

1 Department of Plant Ecophysiology, Utrecht University, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands

* To whom correspondence should be addressed.
LAURENTIUS A. C. J. VOESENEK, E-mail: L.A.C.J.Voesenek{at}bio.uu.nl


  Abstract

• Background Complete submergence of Rumex palustris leads to hyponastic (upward) petiole growth followed by enhanced petiole elongation. Previous pharmacological experiments have provided insights into the signal transduction pathway leading to this combined ‘escape’ response. It will, however, be difficult to gain further knowledge using these methods. Consequently, new approaches are required.

• Scope Here we propose that different environmental signals resulting in similar phenotypes can help to understand better the submergence response. In this review, we show that both ethylene and shade induce similar growth responses in R. palustris and Arabidopsis thaliana. We illustrate how this can be exploited to unravel novel signalling components in submergence-induced elongation growth. Furthermore, we illustrate the potential of arabidopsis as a useful model in submergence research based on similarities with submergence-tolerant species such as R. palustris and the molecular opportunities it presents. This is illustrated by examples of current work exploring this concept.

• Conclusions Incorporating different model systems, such as arabidopsis and shade avoidance, into submergence research can be expected to create powerful tools to unravel signal transduction routes determining submergence tolerance.

Keywords: Rumex palustris, Arabidopsis thaliana, submergence, shade avoidance, ethylene, microarray, light, QTL, growth, elongation, differential growth, hyponasty.
{dagger} R. Pierik and F. F. Millenaar contributed equally to this work.
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