Plant Physiology Preview
Published on October 1, 2004; 10.1104/pp.104.049197
Received July 6, 2004
Returned for revision August 10, 2004
Accepted August 22, 2004
The Roles of Ethylene, Auxin, Abscisic Acid, and Gibberellin in the Hyponastic Growth of Submerged Rumex palustris Petioles
Marjolein C.H. Cox , Joris J. Benschop , Robert A.M. Vreeburg , Cornelis A.M. Wagemaker , Thomas Moritz , Anton J.M. Peeters , and Laurentius A.C.J. Voesenek *
Plant Ecophysiology, Utrecht University, 3584 CA Utrecht, The Netherlands
Umea Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90 1 83 Umea, Sweden
* Corresponding author; email: l.a.c.j.voesenek{at}bio.uu.nl.
Rumex palustris responds to complete submergence with upward movement of the younger petioles. This so-called hyponastic response, in combination with stimulated petiole elongation, brings the leaf blade above the water surface and restores contact with the atmosphere. We made a detailed study of this differential growth process, encompassing the complete range of the known signal transduction pathway: from the cellular localization of differential growth, to the hormonal regulation, and the possible involvement of a cell wall loosening protein (expansin) as a downstream target. We show that hyponastic growth is caused by differential cell elongation across the petiole base, with cells on the abaxial (lower) surface elongating faster than cells on the adaxial (upper) surface. Pharmacological studies and endogenous hormone measurements revealed that ethylene, auxin, abscisic acid (ABA), and gibberellin regulate different and sometimes overlapping stages of hyponastic growth. Initiation of hyponastic growth and (maintenance of) the maximum petiole angle are regulated by ethylene, ABA, and auxin, whereas the speed of the response is influenced by ethylene, ABA, and gibberellin. We found that a submergence-induced differential redistribution of endogenous indole-3-acetic acid in the petiole base could play a role in maintenance of the response, but not in the onset of hyponastic growth. Since submergence does not induce a differential expression of expansins across the petiole base, it is unlikely that this cell wall loosening protein is the downstream target for the hormones that regulate the differential cell elongation leading to submergence-induced hyponastic growth in R. palustris.
This article has been cited by other articles:
|
|
|
|
 
M. van Zanten, L. A.C.J. Voesenek, A. J.M. Peeters, and F. F. Millenaar
Hormone- and Light-Mediated Regulation of Heat-Induced Differential Petiole Growth in Arabidopsis
Plant Physiology,
November 1, 2009;
151(3):
1446 - 1458.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. Love, S. Bjorklund, J. Vahala, M. Hertzberg, J. Kangasjarvi, and B. Sundberg
Ethylene is an endogenous stimulator of cell division in the cambial meristem of Populus
PNAS,
April 7, 2009;
106(14):
5984 - 5989.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
R. Pierik, T. Djakovic-Petrovic, D. H. Keuskamp, M. de Wit, and L. A.C.J. Voesenek
Auxin and Ethylene Regulate Elongation Responses to Neighbor Proximity Signals Independent of Gibberellin and DELLA Proteins in Arabidopsis
Plant Physiology,
April 1, 2009;
149(4):
1701 - 1712.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. Weijschede, K. Antonise, H. de Caluwe, H. de Kroon, and H. Huber
Effects of cell number and cell size on petiole length variation in a stoloniferous herb
Am. J. Botany,
January 1, 2008;
95(1):
41 - 49.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. B. Jackson
Ethylene-promoted Elongation: an Adaptation to Submergence Stress
Ann. Bot.,
January 1, 2008;
101(2):
229 - 248.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. J. Benschop, F. F. Millenaar, M. E. Smeets, M. van Zanten, L. A.C.J. Voesenek, and A. J.M. Peeters
Abscisic Acid Antagonizes Ethylene-Induced Hyponastic Growth in Arabidopsis
Plant Physiology,
February 1, 2007;
143(2):
1013 - 1023.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
S. Lievens, S. Goormachtig, J. Den Herder, W. Capoen, R. Mathis, P. Hedden, and M. Holsters
Gibberellins Are Involved in Nodulation of Sesbania rostrata
Plant Physiology,
November 1, 2005;
139(3):
1366 - 1379.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
B. Steffens and M. Sauter
Epidermal Cell Death in Rice Is Regulated by Ethylene, Gibberellin, and Abscisic Acid
Plant Physiology,
October 1, 2005;
139(2):
713 - 721.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
R. PIERIK, F. F. MILLENAAR, A. J. M. PEETERS, and L. A. C. J. VOESENEK
New Perspectives in Flooding Research: the Use of Shade Avoidance and Arabidopsis thaliana
Ann. Bot.,
September 1, 2005;
96(4):
533 - 540.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
J. BAILEY-SERRES and R. CHANG
Sensing and Signalling in Response to Oxygen Deprivation in Plants and Other Organisms
Ann. Bot.,
September 1, 2005;
96(4):
507 - 518.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Chang and A. B. Bleecker
Ethylene Biology. More Than a Gas
Plant Physiology,
October 1, 2004;
136(2):
2895 - 2899.
[Full Text]
[PDF]
|
|
|
|
|
