Characterization of Circadian-Associated Pseudo-Response Regulators : II. The Function of PRR5 and Its Molecular Dissection in Arabidopsis thaliana

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概要

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• Together with PRR1/TOC1, PRR5 belongs to the small family of PSEUDO-RESPONSE REGULATORs (PRRs), which function as clock components of Arabidopsis thaliana. We employed a set of transgenic lines, each of which was designed to misexpress a truncated form of the PRR5 molecule, together with the original transgenic line (named PRR5-ox) that misexpresses the entire PRR5 polypeptide. The results of genetic analysis suggested that PRR5-ox seedlings showed a phenotype of hypersensitivity to red light during early photomorphogenesis in a manner dependent on red light photoreceptors (PhyA and PhyB), but independent of PRR1/TOC1. The set of newly constructed transgenic lines (named PRR5-N-ox and PRR5-C-ox) were also characterized in terms of circadian-associated phenotypes. The results suggest that the N-terminal pseudo-receiver domain of the PRR5 molecule seems to be dispensable for the misexpressed PRR5 molecule to bring about the phenotype of red light sensitivity. However, PRR5-N-ox plants, misexpressing only the pseudo-receiver domain, showed a phenotype of long period of free-running circadian rhythms of certain clock-controlled genes. Considering these and other results, we discuss the structure and function of PRR5 in the context of current views of the circadian clock in higher plants.

• 社団法人 日本農芸化学会の論文
• 2007-02-23

著者

• Kato Takahiko

  Kazusa Dna Research Institute

• Kato Takahiko

  Department Of Chemistry And Bioscience Faculty Of Science Kagoshima University

• KATO Tomohiko

  Kazusa DNA Research Institute

• NIWA Yusuke

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• MURAKAMI Masaya

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• YAMASHINO Takafumi

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• MIZUNO Takeshi

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• Kato Takahiko

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• Nakamura Yuko

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• MATSUSHIKA Akinori

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• KURIYAMA Tomoko

  RIKEN Plant Science Center

• 柿本 辰男

  Department Of Biology Graduate School Of Science Osaka University

• Kinoue Tomoyo

  Kagoshima Univ. Kagoshima Jpn

• Mizuno Takeshi

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Kato T

  Forestry Res. Inst. Oji Paper Co. Ltd.

• Kato Tomohiko

  Mitsui Plant Biotech. Res. Inst.

• Kato Takahiko

  Lab. Of Molecular Microbiology School Of Agriculture Nagoya Univ.

• Ashikari M

  Bioscience And Biotechnology Center Nagoya University

• Ashikari Motoyuki

  Bio-oriented Technology Research Advancement Institution:(present Address)bioscience Center Nagoya U

• KOJIMA Masaya

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• Murakami Masaya

  Lab. Of Molecular Microbiology School Of Agriculture Nagoya Univ.

• Kawamura Masakazu

  Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University

• Matsushika Akinori

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Kiba T

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Murakami Masaya

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Kojima Masaya

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Nakamura Yuko

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Ashikari Motoyuki

  Bioscience And Biotechnology Center Nagoya Univ.

• Yamashino Takafumi

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Kawamura Masakazu

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• Kondo Takao

  Graduate School Of Biological Sciences Nagoya University

• Mizuno Takeshi

  Laboratory Of Microbiology School Of Agriculture Nagoya University

• Mizuno T

  Faculty Of Agriculture Tokyo University Of Agriculture And Technology

• Kato Takahiko

  Laboratory Of Molecular Microbiology School Of Agriculture Nagoya University

• YAMASHINO Takafumi

  Laboratory of Molecular and Functional Cenomics, School of Agriculture, Nagoya University

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