A Genetic Framework for the Control of Cell Division and Differentiation in the Root Meristem
Kyoto University · Kyoto Bunkyo University · +3 more institutions
Abstract
Plant growth and development are sustained by meristems. Meristem activity is controlled by auxin and cytokinin, two hormones whose interactions in determining a specific developmental output are still poorly understood. By means of a comprehensive genetic and molecular analysis in Arabidopsis, we show that a primary cytokinin-response transcription factor, ARR1, activates the gene SHY2/IAA3 (SHY2), a repressor of auxin signaling that negatively regulates the PIN auxin transport facilitator genes: thereby, cytokinin causes auxin redistribution, prompting cell differentiation. Conversely, auxin mediates degradation of the SHY2 protein, sustaining PIN activities and cell division. Thus, the cell differentiation…
Citation impact
- FWCI
- 57.82
- Percentile
- 100%
- References
- 22
Authors
9- RDRaffaele Dello IoioCorresponding
Kyoto University, Kyoto Bunkyo University, Kyoto University Institute for Chemical Research, Nara Institute of Science and Technology, Sapienza University of Rome
- KNKinu Nakamura
Kyoto University, Kyoto Bunkyo University, Kyoto University Institute for Chemical Research, Nara Institute of Science and Technology, Sapienza University of Rome
- LMLaila Moubayidin
Kyoto University, Kyoto Bunkyo University, Kyoto University Institute for Chemical Research, Nara Institute of Science and Technology, Sapienza University of Rome
- SPSerena Perilli
Kyoto University, Kyoto Bunkyo University, Kyoto University Institute for Chemical Research, Nara Institute of Science and Technology, Sapienza University of Rome
- MTMasatoshi Taniguchi
Kyoto University, Kyoto Bunkyo University, Kyoto University Institute for Chemical Research, Nara Institute of Science and Technology, Sapienza University of Rome
Topics & keywords
- Meristem
- Auxin
- Cytokinin
- Arabidopsis
- Biology
- Cell division
- Cell biology
- Transcription factor
- Life in Land