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Strigolactones inhibit auxin feedback on PIN-dependent auxin transport canalization

Author

Listed:
  • Jing Zhang

    (China Agricultural University)

  • Ewa Mazur

    (University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection
    Central European Institute of Technology (CEITEC), Masaryk University (MU))

  • Jozef Balla

    (Mendel University in Brno
    Mendel University in Brno)

  • Michelle Gallei

    (Institute of Science and Technology (IST))

  • Petr Kalousek

    (Mendel University in Brno)

  • Zuzana Medveďová

    (Mendel University in Brno)

  • Yang Li

    (China Agricultural University)

  • Yaping Wang

    (China Agricultural University)

  • Tomáš Prát

    (Institute of Science and Technology (IST))

  • Mina Vasileva

    (Institute of Science and Technology (IST))

  • Vilém Reinöhl

    (Mendel University in Brno)

  • Stanislav Procházka

    (Mendel University in Brno)

  • Rostislav Halouzka

    (Palacký University)

  • Petr Tarkowski

    (Palacký University)

  • Christian Luschnig

    (University of Natural Resources and Life Sciences, Vienna (BOKU))

  • Philip B. Brewer

    (The University of Adelaide)

  • Jiří Friml

    (Institute of Science and Technology (IST))

Abstract

Directional transport of the phytohormone auxin is a versatile, plant-specific mechanism regulating many aspects of plant development. The recently identified plant hormones, strigolactones (SLs), are implicated in many plant traits; among others, they modify the phenotypic output of PIN-FORMED (PIN) auxin transporters for fine-tuning of growth and developmental responses. Here, we show in pea and Arabidopsis that SLs target processes dependent on the canalization of auxin flow, which involves auxin feedback on PIN subcellular distribution. D14 receptor- and MAX2 F-box-mediated SL signaling inhibits the formation of auxin-conducting channels after wounding or from artificial auxin sources, during vasculature de novo formation and regeneration. At the cellular level, SLs interfere with auxin effects on PIN polar targeting, constitutive PIN trafficking as well as clathrin-mediated endocytosis. Our results identify a non-transcriptional mechanism of SL action, uncoupling auxin feedback on PIN polarity and trafficking, thereby regulating vascular tissue formation and regeneration.

Suggested Citation

  • Jing Zhang & Ewa Mazur & Jozef Balla & Michelle Gallei & Petr Kalousek & Zuzana Medveďová & Yang Li & Yaping Wang & Tomáš Prát & Mina Vasileva & Vilém Reinöhl & Stanislav Procházka & Rostislav Halouzk, 2020. "Strigolactones inhibit auxin feedback on PIN-dependent auxin transport canalization," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17252-y
    DOI: 10.1038/s41467-020-17252-y
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    References listed on IDEAS

    as
    1. Niko Geldner & Jiří Friml & York-Dieter Stierhof & Gerd Jürgens & Klaus Palme, 2001. "Auxin transport inhibitors block PIN1 cycling and vesicle trafficking," Nature, Nature, vol. 413(6854), pages 425-428, September.
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    Cited by:

    1. Jinying Cui & Noriko Nishide & Kiyoshi Mashiguchi & Kana Kuroha & Masayuki Miya & Kazuhiko Sugimoto & Jun-Ichi Itoh & Shinjiro Yamaguchi & Takeshi Izawa, 2023. "Fertilization controls tiller numbers via transcriptional regulation of a MAX1-like gene in rice cultivation," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Satoshi Ogawa & Songkui Cui & Alexandra R. F. White & David C. Nelson & Satoko Yoshida & Ken Shirasu, 2022. "Strigolactones are chemoattractants for host tropism in Orobanchaceae parasitic plants," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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