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The circadian clock rephases during lateral root organ initiation in Arabidopsis thaliana

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  • Ute Voß

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Michael H. Wilson

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Kim Kenobi

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Peter D. Gould

    (Institute of Integrative Biology, University of Liverpool)

  • Fiona C. Robertson

    (University of Cambridge
    Present address: Department of Biochemistry, University of Zimbabwe, PO Box MP 45, Mount Pleasant, Harare, Zimbabwe)

  • Wendy A. Peer

    (College of Agriculture & Natural Resources, University of Maryland)

  • Mikaël Lucas

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK
    Institut de Recherche pour le Développement, UMR DIADE)

  • Kamal Swarup

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Ilda Casimiro

    (Biología Celular Y Zoología, Facultad de Ciencias, Universidad de Extremadura)

  • Tara J. Holman

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Darren M. Wells

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Benjamin Péret

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK
    UMR 7265 CEA, CNRS, Université d'Aix-Marseille, Laboratoire de Biologie du Développement des Plantes)

  • Tatsuaki Goh

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK
    Graduate School of Science, Kobe University)

  • Hidehiro Fukaki

    (Graduate School of Science, Kobe University)

  • T. Charlie Hodgman

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

  • Laurent Laplaze

    (Institut de Recherche pour le Développement, UMR DIADE)

  • Karen J. Halliday

    (School of Biological Sciences, University of Edinburgh
    SynthSys, CH Waddington Building, University of Edinburgh)

  • Karin Ljung

    (Umea Plant Science Centre, Swedish University of Agricultural Sciences)

  • Angus S. Murphy

    (University of Maryland)

  • Anthony J. Hall

    (Institute of Integrative Biology, University of Liverpool)

  • Alex A. R. Webb

    (University of Cambridge)

  • Malcolm J. Bennett

    (Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Nottingham LE12 5RD, UK)

Abstract

The endogenous circadian clock enables organisms to adapt their growth and development to environmental changes. Here we describe how the circadian clock is employed to coordinate responses to the key signal auxin during lateral root (LR) emergence. In the model plant, Arabidopsis thaliana, LRs originate from a group of stem cells deep within the root, necessitating that new organs emerge through overlying root tissues. We report that the circadian clock is rephased during LR development. Metabolite and transcript profiling revealed that the circadian clock controls the levels of auxin and auxin-related genes including the auxin response repressor IAA14 and auxin oxidase AtDAO2. Plants lacking or overexpressing core clock components exhibit LR emergence defects. We conclude that the circadian clock acts to gate auxin signalling during LR development to facilitate organ emergence.

Suggested Citation

  • Ute Voß & Michael H. Wilson & Kim Kenobi & Peter D. Gould & Fiona C. Robertson & Wendy A. Peer & Mikaël Lucas & Kamal Swarup & Ilda Casimiro & Tara J. Holman & Darren M. Wells & Benjamin Péret & Tatsu, 2015. "The circadian clock rephases during lateral root organ initiation in Arabidopsis thaliana," Nature Communications, Nature, vol. 6(1), pages 1-9, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8641
    DOI: 10.1038/ncomms8641
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