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AtNIGT1/HRS1 integrates nitrate and phosphate signals at the Arabidopsis root tip

Author

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  • Anna Medici

    (Biochimie et Physiologie Moléculaire des Plantes, Institut Claude Grignon)

  • Amy Marshall-Colon

    (Center for Genomics and Systems Biology, New York University
    Present address: Department of Plant Biology, University of Illinois, 1201W Gregory Drive, 193 ERML MC-051, Urbana, Illinois, USA)

  • Elsa Ronzier

    (Biochimie et Physiologie Moléculaire des Plantes, Institut Claude Grignon
    Present address: Department of Medicine, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, New York, New York 14642, USA)

  • Wojciech Szponarski

    (Biochimie et Physiologie Moléculaire des Plantes, Institut Claude Grignon)

  • Rongchen Wang

    (Section of Cell and Developmental Biology, University of California at San Diego)

  • Alain Gojon

    (Biochimie et Physiologie Moléculaire des Plantes, Institut Claude Grignon)

  • Nigel M. Crawford

    (Section of Cell and Developmental Biology, University of California at San Diego)

  • Sandrine Ruffel

    (Biochimie et Physiologie Moléculaire des Plantes, Institut Claude Grignon)

  • Gloria M. Coruzzi

    (Center for Genomics and Systems Biology, New York University)

  • Gabriel Krouk

    (Biochimie et Physiologie Moléculaire des Plantes, Institut Claude Grignon)

Abstract

Nitrogen and phosphorus are among the most widely used fertilizers worldwide. Nitrate (NO3−) and phosphate (PO43−) are also signalling molecules whose respective transduction pathways are being intensively studied. However, plants are continuously challenged with combined nutritional deficiencies, yet very little is known about how these signalling pathways are integrated. Here we report the identification of a highly NO3−-inducible NRT1.1-controlled GARP transcription factor, HRS1, document its genome-wide transcriptional targets, and validate its cis-regulatory elements. We demonstrate that this transcription factor and a close homologue repress the primary root growth in response to P deficiency conditions, but only when NO3− is present. This system defines a molecular logic gate integrating P and N signals. We propose that NO3− and P signalling converge via double transcriptional and post-transcriptional control of the same protein, HRS1.

Suggested Citation

  • Anna Medici & Amy Marshall-Colon & Elsa Ronzier & Wojciech Szponarski & Rongchen Wang & Alain Gojon & Nigel M. Crawford & Sandrine Ruffel & Gloria M. Coruzzi & Gabriel Krouk, 2015. "AtNIGT1/HRS1 integrates nitrate and phosphate signals at the Arabidopsis root tip," Nature Communications, Nature, vol. 6(1), pages 1-11, May.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7274
    DOI: 10.1038/ncomms7274
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    Cited by:

    1. Liu, Caixia & Rubæk, Gitte H. & Liu, Fulai & Andersen, Mathias N., 2015. "Effect of partial root zone drying and deficit irrigation on nitrogen and phosphorus uptake in potato," Agricultural Water Management, Elsevier, vol. 159(C), pages 66-76.
    2. Kei Hiruma & Seishiro Aoki & Junya Takino & Takeshi Higa & Yuniar Devi Utami & Akito Shiina & Masanori Okamoto & Masami Nakamura & Nanami Kawamura & Yoshihiro Ohmori & Ryohei Sugita & Keitaro Tanoi & , 2023. "A fungal sesquiterpene biosynthesis gene cluster critical for mutualist-pathogen transition in Colletotrichum tofieldiae," Nature Communications, Nature, vol. 14(1), pages 1-18, December.

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