14-3-3 proteins act as intracellular receptors for rice Hd3a florigen

Ken-ichiro Taoka, Izuru Ohki, Hiroyuki Tsuji, Kyoko Furuita, Kokoro Hayashi, Tomoko Yanase, Midori Yamaguchi, Chika Nakashima, Yekti Asih Purwestri, Shojiro Tamaki, Yuka Ogaki, Chihiro Shimada, Atsushi Nakagawa, Chojiro Kojima () and Ko Shimamoto ()
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Ken-ichiro Taoka: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Izuru Ohki: Laboratory of Biophysics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Hiroyuki Tsuji: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Kyoko Furuita: Laboratory of Biophysics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Kokoro Hayashi: Laboratory of Biophysics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Tomoko Yanase: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Midori Yamaguchi: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Chika Nakashima: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Yekti Asih Purwestri: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Shojiro Tamaki: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Yuka Ogaki: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Chihiro Shimada: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Atsushi Nakagawa: Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita
Chojiro Kojima: Laboratory of Biophysics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma
Ko Shimamoto: Laboratory of Plant Molecular Genetics, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma

Nature, 2011, vol. 476, issue 7360, 332-335

Abstract: How florigen says it with flowers Florigen, a plant hormone that translocates from leaves to the shoot apex to induce flowering, is encoded by the FLOWERING LOCUS T (FT) gene. The detailed molecular mechanism for florigen action and the identity of its receptors remained unknown. Ko Shimamoto and colleagues show that in rice, florigen binds to 14-3-3 proteins, a type of regulatory molecule present in all eukaryotic cells, and to the transcription factor OsFD1. The crystal structure of the resulting florigen activation complex (FAC) has been determined, providing a mechanistic basis for florigen function in flowering. This work offers clues for improving agriculturally important traits by manipulating florigen and its regulators.

Date: 2011
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DOI: 10.1038/nature10272

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