FT Protein: a Universal Long-Distance Mobile Signal in Seed Plants ?

• Hiraoka Kazuhisa

  Department of Integrated Life Science, Graduate School of Biostudies, Kyoto University

• Daimon Yasufumi

  Department of Integrated Life Science, Graduate School of Biostudies, Kyoto University

• Araki Takashi

  Department of Integrated Life Science, Graduate School of Biostudies, Kyoto University

Bibliographic Information

Other Title

• 種子植物における汎用的な長距離シグナルであるFT蛋白質

Abstract

After long pursuit for 70 years, the flowering signal named “ florigen” turned out to be FT protein, a 20-kDasoluble protein of the PEBP/RKIP family. FT protein is expressed in the companion cells of leaf vasculatures under favorable external(e.g.photoperiod, light quality, temperature)and internal(e.g.age, size)conditions, and is transported from leaves to shoot apex via phloem. At the shoot apex, FT protein acts with transcription factors such as FD to activate the floral program. FT is conserved among seed plants, and its expression is regulated by a conserved pathway(“ CO/FT module”)as well as other pathways unique to specific groups of plants. Recent findings that FT protein is involved in environmental(photoperiod and temperature)regulation of tuberization in potato, and bud set in angiosperm and conifer trees may suggest its universal nature of regulatory signal possibly acting across a long distance.

Journal

• PLANT MORPHOLOGY

  PLANT MORPHOLOGY 19and20 (1), 3-13, 2008

  The Japanese Society of Plant Morphology

Keywords

• FT protein
• florigen
• photoperiodism
• flowering
• tuberization
• bud dormancy

Details

• CRID: 1390001205357705088
• NII Article ID: 130004303815
• DOI: 10.5685/plmorphol.19and20.3
• ISSN: 18844154
• ISSN: 09189726
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed