Plant Physiology Preview
Published on February 24, 2006; 10.1104/pp.105.070508
Received August 28, 2005
Returned for revision October 12, 2005
Accepted January 19, 2006
Transcriptional Profiling Implicates Novel Interactions Between Abiotic Stress and Hormonal Responses in Thellungiella, a Close Relative of Arabidopsis
C E. Wong , Y Li , A Labbe , D Guevara , P Nuin , B Whitty , C. Diaz , G. Brian Golding , Gordon R. Gray , Elizabeth A. Weretilnyk , Marilyn Griffith , and Barbara A. Moffatt *
Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo ON, Canada N2L 3G1
Département de mathématiques et de statistique, Pavillon Alexandre-Vachon, Université Laval, Québec, Canada G1K 7P4
Department of Biology, McMaster University, 1280 Main St. West, Hamilton ON, Canada L8S 4K1
Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A8
* Corresponding author; email: moffatt{at}uwaterloo.ca.
Thellungiella, an Arabidopsis-related halophyte, is an emerging model species for studies designed to elucidate molecular mechanisms of abiotic stress tolerance. Using a cDNA microarray containing 3628 unique sequences derived from previously described libraries of stress-induced cDNAs of the Yukon ecotype of Thellungiella salsuginea, we obtained transcript profiles of its response to cold, salinity, simulated drought, and re-watering after simulated drought. A total of 153 transcripts were differentially regulated under the conditions studied. Only six of these genes responded to all three stresses of drought, cold and salinity indicating a divergence among end responses triggered by each of these stresses. Unlike in Arabidopsis, there were relatively few transcript changes in response to high salinity in this halophyte. Furthermore, the gene products represented among drought responsive-transcripts in Thellungiella associate a down-regulation of defense-related transcripts with exposure to water deficits. This antagonistic interaction between drought and biotic stress response may demonstrate Thellungiella's ability to respond precisely to environmental stresses, thereby conserving energy and resources, and maximizing its survival potential. Intriguingly, changes of transcript abundance in response to cold implicate the involvement of jasmonic acid. While transcripts associated with photosynthetic processes were repressed by cold, physiological responses in plants developed at low temperature suggest a novel mechanism for photosynthetic acclimation. Taken together, our results provide useful starting points for more in depth analyses of Thellungiella's extreme stress tolerance.
This article has been cited by other articles:
|
|
|
|
 
M. Tunc-Ozdemir, G. Miller, L. Song, J. Kim, A. Sodek, S. Koussevitzky, A. N. Misra, R. Mittler, and D. Shintani
Thiamin Confers Enhanced Tolerance to Oxidative Stress in Arabidopsis
Plant Physiology,
September 1, 2009;
151(1):
421 - 432.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. M. Chaves, J. Flexas, and C. Pinheiro
Photosynthesis under drought and salt stress: regulation mechanisms from whole plant to cell
Ann. Bot.,
February 1, 2009;
103(4):
551 - 560.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
N. J. M. Saibo, T. Lourenco, and M. M. Oliveira
Transcription factors and regulation of photosynthetic and related metabolism under environmental stresses
Ann. Bot.,
February 1, 2009;
103(4):
609 - 623.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
P. Stepien and G. N. Johnson
Contrasting Responses of Photosynthesis to Salt Stress in the Glycophyte Arabidopsis and the Halophyte Thellungiella: Role of the Plastid Terminal Oxidase as an Alternative Electron Sink
Plant Physiology,
February 1, 2009;
149(2):
1154 - 1165.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
A. Amtmann
Learning from Evolution: Thellungiella Generates New Knowledge on Essential and Critical Components of Abiotic Stress Tolerance in Plants
Mol Plant,
January 1, 2009;
2(1):
3 - 12.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
D. Huang, W. Wu, S. R. Abrams, and A. J. Cutler
The relationship of drought-related gene expression in Arabidopsis thaliana to hormonal and environmental factors
J. Exp. Bot.,
August 1, 2008;
59(11):
2991 - 3007.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
S. Kant, Y.-M. Bi, E. Weretilnyk, S. Barak, and S. J. Rothstein
The Arabidopsis Halophytic Relative Thellungiella halophila Tolerates Nitrogen-Limiting Conditions by Maintaining Growth, Nitrogen Uptake, and Assimilation
Plant Physiology,
July 1, 2008;
147(3):
1168 - 1180.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
E. Alos, M. Roca, D. J. Iglesias, M. I. Minguez-Mosquera, C. M. B. Damasceno, T. W. Thannhauser, J. K. C. Rose, M. Talon, and M. Cercos
An Evaluation of the Basis and Consequences of a Stay-Green Mutation in the navel negra Citrus Mutant Using Transcriptomic and Proteomic Profiling and Metabolite Analysis
Plant Physiology,
July 1, 2008;
147(3):
1300 - 1315.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
H. H. Liu, J. Liu, S. L. Fan, M. Z. Song, X. L. Han, F. Liu, and F. F. Shen
Molecular cloning and characterization of a salinity stress-induced gene encoding DEAD-box helicase from the halophyte Apocynum venetum
J. Exp. Bot.,
February 13, 2008;
(2008)
erm355v1.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
W. R. Swindell
The Association Among Gene Expression Responses to Nine Abiotic Stress Treatments in Arabidopsis thaliana
Genetics,
December 1, 2006;
174(4):
1811 - 1824.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
