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AtWRKY15 perturbation abolishes the mitochondrial stress response that steers osmotic stress tolerance in Arabidopsis

Sandy Vanderauwera (UGent) , Korneel Vandenbroucke (UGent) , Annelies Inzé (UGent) , Brigitte Van De Cotte (UGent) , Per Mühlenbock (UGent) , Riet De Rycke (UGent) , Naïra Naouar (UGent) , Tim Van Gaever (UGent) , Marc Van Montagu (UGent) and Frank Van Breusegem (UGent)
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Biotechnology for a sustainable economy (Bio-Economy)
Abstract
Environmental stresses adversely affect plant growth and development. A common theme within these adverse conditions is the perturbation of reactive oxygen species (ROS) homeostasis. Here, we demonstrate that the ROS-inducible Arabidopsis thaliana WRKY15 transcription factor (AtWRKY15) modulates plant growth and salt/osmotic stress responses. By transcriptome profiling, a divergent stress response was identified in transgenic WRKY15-overexpressing plants that linked a stimulated endoplasmic reticulum-to-nucleus communication to a disrupted mitochondrial stress response under salt-stress conditions. We show that mitochondrial calcium-flux sensing might be important for regulating an active mitochondrial retrograde signaling and launching an appropriate defense response to confer salt-stress tolerance.
Keywords
ABIOTIC STRESS, RETROGRADE REGULATION, ALTERNATIVE OXIDASE, TRANSCRIPTION FACTORS, ENDOPLASMIC-RETICULUM, UNFOLDED PROTEIN RESPONSE, REGULATED GENE-EXPRESSION, hydrogen peroxide, microarray, cell expansion, abiotic stress signaling, REDOX HOMEOSTASIS, OXIDATIVE STRESS, SALT TOLERANCE

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Chicago
Vanderauwera, Sandy, Korneel Vandenbroucke, Annelies Inzé, Brigitte Van De Cotte, Per Mühlenbock, Riet De Rycke, Naïra Naouar, Tim Van Gaever, Marc Van Montagu, and Frank Van Breusegem. 2012. “AtWRKY15 Perturbation Abolishes the Mitochondrial Stress Response That Steers Osmotic Stress Tolerance in Arabidopsis.” Proceedings of the National Academy of Sciences of the United States of America 109 (49): 20113–20118.
APA
Vanderauwera, S., Vandenbroucke, K., Inzé, A., Van De Cotte, B., Mühlenbock, P., De Rycke, R., Naouar, N., et al. (2012). AtWRKY15 perturbation abolishes the mitochondrial stress response that steers osmotic stress tolerance in Arabidopsis. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 109(49), 20113–20118.
Vancouver
1.
Vanderauwera S, Vandenbroucke K, Inzé A, Van De Cotte B, Mühlenbock P, De Rycke R, et al. AtWRKY15 perturbation abolishes the mitochondrial stress response that steers osmotic stress tolerance in Arabidopsis. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2012;109(49):20113–8.
MLA
Vanderauwera, Sandy, Korneel Vandenbroucke, Annelies Inzé, et al. “AtWRKY15 Perturbation Abolishes the Mitochondrial Stress Response That Steers Osmotic Stress Tolerance in Arabidopsis.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 109.49 (2012): 20113–20118. Print.
@article{3092579,
  abstract     = {Environmental stresses adversely affect plant growth and development. A common theme within these adverse conditions is the perturbation of reactive oxygen species (ROS) homeostasis. Here, we demonstrate that the ROS-inducible Arabidopsis thaliana WRKY15 transcription factor (AtWRKY15) modulates plant growth and salt/osmotic stress responses. By transcriptome profiling, a divergent stress response was identified in transgenic WRKY15-overexpressing plants that linked a stimulated endoplasmic reticulum-to-nucleus communication to a disrupted mitochondrial stress response under salt-stress conditions. We show that mitochondrial calcium-flux sensing might be important for regulating an active mitochondrial retrograde signaling and launching an appropriate defense response to confer salt-stress tolerance.},
  author       = {Vanderauwera, Sandy and Vandenbroucke, Korneel and Inz{\'e}, Annelies and Van De Cotte, Brigitte and M{\"u}hlenbock, Per and De Rycke, Riet and Naouar, Na{\"i}ra and Van Gaever, Tim and Van Montagu, Marc and Van Breusegem, Frank},
  issn         = {0027-8424},
  journal      = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA},
  language     = {eng},
  number       = {49},
  pages        = {20113--20118},
  title        = {AtWRKY15 perturbation abolishes the mitochondrial stress response that steers osmotic stress tolerance in Arabidopsis},
  url          = {http://dx.doi.org/10.1073/pnas.1217516109},
  volume       = {109},
  year         = {2012},
}

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