Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.


Sci. Signal., 9 April 2013
Vol. 6, Issue 270, p. rs8
[DOI: 10.1126/scisignal.2003509]


Editor's Summary

SnRK2 Kinases in Plant Stress Signaling
The SnRK2 subfamily of plant kinases is activated both by the hormone abscisic acid (ABA) and by dehydration stress in plants. Umezawa et al. analyzed the phosphoproteome and transcriptome of wild-type and SnRK2 triple-mutant plants exposed to ABA or dehydration. Motif analysis of the peptides that exhibited altered phosphorylation enabled the authors to identify both direct and indirect targets of SnRK2. The phosphoproteomic analysis indicated that SnRK2 primarily functioned in ABA signaling and regulated fewer targets in response to dehydration. Biochemical or genetic experiments confirmed the regulation of three of the SnRK2 targets in response to ABA: the mitogen-activated protein kinases AtMPK1 and AtMPK2, the transcription factor AREB1, and the previously uncharacterized protein SNS1.

Citation: T. Umezawa, N. Sugiyama, F. Takahashi, J. C. Anderson, Y. Ishihama, S. C. Peck, K. Shinozaki, Genetics and Phosphoproteomics Reveal a Protein Phosphorylation Network in the Abscisic Acid Signaling Pathway in Arabidopsis thaliana. Sci. Signal. 6, rs8 (2013).

Read the Full Text

Phosphorylation of the vacuolar anion exchanger AtCLCa is required for the stomatal response to abscisic acid.
S. Wege, A. De Angeli, M.-J. Droillard, L. Kroniewicz, S. Merlot, D. Cornu, F. Gambale, E. Martinoia, H. Barbier-Brygoo, S. Thomine, et al. (2014)
Science Signaling 7, ra65
   Abstract »    Full Text »    PDF »
Phosphoproteomic Analyses Reveal Early Signaling Events in the Osmotic Stress Response.
K. E. Stecker, B. B. Minkoff, and M. R. Sussman (2014)
Plant Physiology 165, 1171-1187
   Abstract »    Full Text »    PDF »
Gel-Based Comparative Phosphoproteomic Analysis on Rice Embryo During Germination.
C. Han, K. Wang, and P. Yang (2014)
Plant Cell Physiol.
   Abstract »    Full Text »    PDF »
The ABA Receptor PYL8 Promotes Lateral Root Growth by Enhancing MYB77-Dependent Transcription of Auxin-Responsive Genes.
Y. Zhao, L. Xing, X. Wang, Y.-J. Hou, J. Gao, P. Wang, C.-G. Duan, X. Zhu, and J.-K. Zhu (2014)
Science Signaling 7, ra53
   Abstract »    Full Text »    PDF »
Role of chromatin in water stress responses in plants.
S.-K. Han and D. Wagner (2014)
J. Exp. Bot. 65, 2785-2799
   Abstract »    Full Text »    PDF »
Calcium-Dependent Protein Kinases: Hubs in Plant Stress Signaling and Development.
P. Schulz, M. Herde, and T. Romeis (2013)
Plant Physiology 163, 523-530
   Full Text »    PDF »
Quantitative phosphoproteomics identifies SnRK2 protein kinase substrates and reveals the effectors of abscisic acid action.
P. Wang, L. Xue, G. Batelli, S. Lee, Y.-J. Hou, M. J. Van Oosten, H. Zhang, W. A. Tao, and J.-K. Zhu (2013)
PNAS 110, 11205-11210
   Abstract »    Full Text »    PDF »

To Advertise     Find Products

Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882