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PEP1 regulates perennial flowering in Arabis alpina

Author

Listed:
  • Renhou Wang

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Sara Farrona

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Coral Vincent

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Anika Joecker

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Heiko Schoof

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Franziska Turck

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Carlos Alonso-Blanco

    (Centro Nacional de Biotecnología (Consejo Superior de Investigaciones Científicas), Cantoblanco, 28049 Madrid, Spain)

  • George Coupland

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

  • Maria C. Albani

    (Max Planck Institute for Plant Breeding Research, Carl von Linne Weg 10, D-50829 Cologne, Germany)

Abstract

Flowering: a perennial problem Most studies on the regulation of flowering have been performed in annuals such as the classic 'lab plant' Arabidopsis thaliana, which flower only once in their lifetime. Much less work has been done on the potentially more complicated question of how flowering is regulated in perennials, which live for many years and undergo repeated cycles of flowering and vegetative growth. Now a study of flowering in Arabis alpina, a perennial related to A. thaliana, identifies a gene, PEP1 (perpetual flowering 1), that regulates three key traits of perennials. It is involved in limiting flowering duration, in stopping some branches from flowering at all, and in restricting flowering to spring. PEP1 is the orthologue of the FLC flowering repressor in A. thaliana, which, through chromatin modification, inhibits flowering until the plant is exposed to cold temperatures. PEP1 has functions in the perennial that are not represented in the annual, and these appear have evolved through changes in histone modification at the FLC and PEP1 loci.

Suggested Citation

  • Renhou Wang & Sara Farrona & Coral Vincent & Anika Joecker & Heiko Schoof & Franziska Turck & Carlos Alonso-Blanco & George Coupland & Maria C. Albani, 2009. "PEP1 regulates perennial flowering in Arabis alpina," Nature, Nature, vol. 459(7245), pages 423-427, May.
    • Handle: RePEc:nat:nature:v:459:y:2009:i:7245:d:10.1038_nature07988
    DOI: 10.1038/nature07988
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