Coordinated regulation of Arabidopsis thaliana development by light and gibberellins

Suhua Feng, Cristina Martinez, Giuliana Gusmaroli, Yu Wang, Junli Zhou, Feng Wang, Liying Chen, Lu Yu, Juan M. Iglesias-Pedraz, Stefan Kircher, Eberhard Schäfer, Xiangdong Fu, Liu-Min Fan and Xing Wang Deng ()
Additional contact information
Suhua Feng: Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA
Cristina Martinez: Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA
Giuliana Gusmaroli: Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA
Yu Wang: Peking–Yale Joint Center for Plant Molecular Genetics and Agrobiotechnology, and National Laboratory for Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University
Junli Zhou: National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China
Feng Wang: National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China
Liying Chen: National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China
Lu Yu: National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China
Juan M. Iglesias-Pedraz: Centro Nacional de Biotecnología-CSIC, Campus Universidad Autónoma de Madrid
Stefan Kircher: Institut für Biologie II/Botanik, Albert Ludwigs Universität
Eberhard Schäfer: Institut für Biologie II/Botanik, Albert Ludwigs Universität
Xiangdong Fu: Institute of Genetics and Developmental Biology, Chinese Academy of Sciences
Liu-Min Fan: Peking–Yale Joint Center for Plant Molecular Genetics and Agrobiotechnology, and National Laboratory for Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University
Xing Wang Deng: Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA

Nature, 2008, vol. 451, issue 7177, 475-479

Abstract: Gibberellins' light touch Many developmental processes in plants are regulated jointly by light and by the gibberellins, yet the molecular basis of cross-talk between the two is not fully understood. Two groups now report results that reveal a signalling cascade that contributes to coordinated plant growth regulation by light and gibberellins. In the absence of gibberellins, DELLA proteins inhibit the binding of the transcription factor PIF3 (a phytochrome-interacting protein) to gene promoters. Gibberellins trigger the degradation of DELLA proteins, thereby allowing PIFs to bind to their target promoters and regulate gene expression. Light acts via a photoreceptor to destabilize PIF4. Thus the DELLA proteins, and competitive interactions between members of the PIF family, appear to key components linking light to the gibberellins.

Date: 2008
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DOI: 10.1038/nature06448

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