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Sci. Signal., 27 April 2010
Vol. 3, Issue 119, p. jc5
[DOI: 10.1126/scisignal.3119jc5]

JOURNAL CLUB

New Regulator for Energy Signaling Pathway in Plants Highlights Conservation Among Species

Anne K. Meyer1*, C. Friedrich H. Longin2*, Christian Klose3, and Andreas Hermann1{dagger}

1 Department of Neurology and Center for Regenerative Therapies Dresden (CRTD), Dresden University of Technology, 01307 Dresden, Germany.
2 State Plant Breeding Institute, University of Hohenheim, 70593 Stuttgart, Germany.
3 Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany.

* These authors contributed equally to this work.

Abstract: The "low-energy checkpoint" SNF1-related protein kinases, which are conserved in all eukaryotes, play an important role in cellular metabolic adaptation to differences in energy and oxygen availability. Although the signaling pathways involved in such metabolic adaptations are well understood in yeast and mammals, they have been poorly understood in plants. A recent study revealed that calcineurin B–like interacting protein kinase 15 (CIPK15) acted as a global regulator of such adaptations, linking the response to O2 deficiency with the response to carbohydrate starvation in rice (Oryza sativa). Knockout mutants of Nipponbare rice CIPK15 failed to initiate transcription of the glycolytic enzymes {alpha}-amylase 3 and alcohol dehydrogenase 2, which mediate fermentative metabolism for adenosine triphosphate generation under anaerobic conditions. Targeted manipulation of OsCIPK15 might facilitate rice cultivation and ensure agricultural productivity in regions subject to flooding. Here, we highlight the importance of the energy- and oxygen-sensing pathway indicated by its conservation among different eukaryotic kingdoms.

{dagger} Corresponding author. E-mail, andreas.hermann{at}uniklinikum-dresden.de

Citation: A. K. Meyer, C. F. H. Longin, C. Klose, A. Hermann, New Regulator for Energy Signaling Pathway in Plants Highlights Conservation Among Species. Sci. Signal. 3, jc5 (2010).

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