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Science 5 October 2007:
Vol. 318. no. 5847, pp. 68 - 69
DOI: 10.1126/science.1145461
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Perspective

Advances in Cytokinin Signaling

Bruno Müller and Jen Sheen*

Cytokinins are essential plant hormones that control various processes in plants' development and response to external stimuli. The Arabidopsis cytokinin signal transduction pathway involves hybrid histidine protein kinase sensors, phosphotransfer proteins, and regulators as transcription activators and repressors in a phosphorelay system. Each step is executed by components encoded by multigene families. Recent findings have revealed new functions, new feedback loops, and connections to other signaling pathways.

Department of Molecular Biology, Massachusetts General Hospital, and Department of Genetics, Harvard Medical School, Boston, MA 02114, USA.

* To whom correspondence should be addressed. E-mail: sheen{at}molbio.mgh.harvard.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Hormone- and light-regulated nucleocytoplasmic transport in plants: current status.
Y. Lee, H.-S. Lee, J.-S. Lee, S.-K. Kim, and S.-H. Kim (2008)
J. Exp. Bot.
   Abstract »    Full Text »    PDF »
The Transcriptional Repressor ARR1-SRDX Suppresses Pleiotropic Cytokinin Activities in Arabidopsis.
A. Heyl, E. Ramireddy, W. G. Brenner, M. Riefler, J. Allemeersch, and T. Schmulling (2008)
Plant Physiology 147, 1380-1395
   Abstract »    Full Text »    PDF »
GeBP and GeBP-Like Proteins Are Noncanonical Leucine-Zipper Transcription Factors That Regulate Cytokinin Response in Arabidopsis.
F. Chevalier, D. Perazza, F. Laporte, G. Le Henanff, P. Hornitschek, J.-M. Bonneville, M. Herzog, and G. Vachon (2008)
Plant Physiology 146, 1142-1154
   Abstract »    Full Text »    PDF »
Cytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component Phosphorelay.
J. P.C. To, J. Deruere, B. B. Maxwell, V. F. Morris, C. E. Hutchison, F. J. Ferreira, G. E. Schaller, and J. J. Kieber (2007)
PLANT CELL 19, 3901-3914
   Abstract »    Full Text »    PDF »


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