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A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate

Author

Listed:
  • Rahul Bhosale

    (University of Nottingham
    University of Nottingham)

  • Jitender Giri

    (University of Nottingham
    National Institute of Plant Genome Research (NIPGR))

  • Bipin K. Pandey

    (University of Nottingham
    National Institute of Plant Genome Research (NIPGR))

  • Ricardo F. H. Giehl

    (Leibniz Institute of Plant Genetics and Crop Plant Research (IPK))

  • Anja Hartmann

    (Leibniz Institute of Plant Genetics and Crop Plant Research (IPK))

  • Richard Traini

    (University of Nottingham
    University of Nottingham)

  • Jekaterina Truskina

    (University of Nottingham
    University of Nottingham
    Univ Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA)

  • Nicola Leftley

    (University of Nottingham
    University of Nottingham)

  • Meredith Hanlon

    (The Pennsylvania State University)

  • Kamal Swarup

    (University of Nottingham
    University of Nottingham)

  • Afaf Rashed

    (University of Nottingham
    University of Nottingham)

  • Ute Voß

    (University of Nottingham
    University of Nottingham)

  • Jose Alonso

    (NC State University)

  • Anna Stepanova

    (NC State University)

  • Jeonga Yun

    (NC State University)

  • Karin Ljung

    (Swedish University of Agricultural Sciences)

  • Kathleen M. Brown

    (The Pennsylvania State University)

  • Jonathan P. Lynch

    (University of Nottingham
    University of Nottingham
    The Pennsylvania State University)

  • Liam Dolan

    (University of Oxford)

  • Teva Vernoux

    (Univ Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA)

  • Anthony Bishopp

    (University of Nottingham
    University of Nottingham)

  • Darren Wells

    (University of Nottingham
    University of Nottingham)

  • Nicolaus Wirén

    (Leibniz Institute of Plant Genetics and Crop Plant Research (IPK))

  • Malcolm J. Bennett

    (University of Nottingham
    University of Nottingham)

  • Ranjan Swarup

    (University of Nottingham
    University of Nottingham)

Abstract

Phosphate (P) is an essential macronutrient for plant growth. Roots employ adaptive mechanisms to forage for P in soil. Root hair elongation is particularly important since P is immobile. Here we report that auxin plays a critical role promoting root hair growth in Arabidopsis in response to low external P. Mutants disrupting auxin synthesis (taa1) and transport (aux1) attenuate the low P root hair response. Conversely, targeting AUX1 expression in lateral root cap and epidermal cells rescues this low P response in aux1. Hence auxin transport from the root apex to differentiation zone promotes auxin-dependent hair response to low P. Low external P results in induction of root hair expressed auxin-inducible transcription factors ARF19, RSL2, and RSL4. Mutants lacking these genes disrupt the low P root hair response. We conclude auxin synthesis, transport and response pathway components play critical roles regulating this low P root adaptive response.

Suggested Citation

  • Rahul Bhosale & Jitender Giri & Bipin K. Pandey & Ricardo F. H. Giehl & Anja Hartmann & Richard Traini & Jekaterina Truskina & Nicola Leftley & Meredith Hanlon & Kamal Swarup & Afaf Rashed & Ute Voß &, 2018. "A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03851-3
    DOI: 10.1038/s41467-018-03851-3
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    Cited by:

    1. Mi Zhang & Zsuzsanna Bodi & Katarzyna Mackinnon & Silin Zhong & Nathan Archer & Nigel P. Mongan & Gordon G. Simpson & Rupert G. Fray, 2022. "Two zinc finger proteins with functions in m6A writing interact with HAKAI," Nature Communications, Nature, vol. 13(1), pages 1-15, December.
    2. Javier Martínez Pacheco & Philippe Ranocha & Luciana Kasulin & Corina M. Fusari & Lucas Servi & Ariel. A. Aptekmann & Victoria Berdion Gabarain & Juan Manuel Peralta & Cecilia Borassi & Eliana Marzol , 2022. "Apoplastic class III peroxidases PRX62 and PRX69 promote Arabidopsis root hair growth at low temperature," Nature Communications, Nature, vol. 13(1), pages 1-14, December.
    3. Rodolfo A. Maniero & Cristiana Picco & Anja Hartmann & Felipe Engelberger & Antonella Gradogna & Joachim Scholz-Starke & Michael Melzer & Georg Künze & Armando Carpaneto & Nicolaus Wirén & Ricardo F. , 2024. "Ferric reduction by a CYBDOM protein counteracts increased iron availability in root meristems induced by phosphorus deficiency," Nature Communications, Nature, vol. 15(1), pages 1-18, December.

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