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Showing 1–7 of 7 results
Advanced filters: Author: Jean-Michel Davière Clear advanced filters

  • Gibberellin is a major hormone in plant growth. Mixing old-style grafting with modern molecular genetics in Arabidopsis shows that the GA12 precursor is the chemical form of gibberellin undergoing long-distance transport across plant organs.

    • Thomas Regnault
    • Jean-Michel Davière
    • Patrick Achard
    Research
    Nature Plants
    Volume: 1, P: 1-6

  • For multicellular organisms, long-distance communication is essential for coordination of organ growth and development. In higher plants, a dual root-to-shoot cytokinin signalling system plays a key role in adapting the growth of distant shoot organs to fluctuating environments.

    • Jean-Michel Davière
    • Patrick Achard
    News & Views
    Nature Plants
    Volume: 3, P: 1-2

  • Light and gibberellins (GA) regulate multiple aspects of plant development, and this paper is one of two studies that provide molecular insights into the connection between these pathways. Without GA, DELLA proteins (GA-signalling repressors) interact with PIFs (phytochrome-interacting proteins) and inhibit their binding to gene promoters. GA triggers degradation of DELLA proteins, thereby allowing PIFs to bind to their target promoters and regulate gene expression. These results reveal a signalling cascade that contributes to coordinated plant growth regulation by light and gibberellins.

    • Miguel de Lucas
    • Jean-Michel Davière
    • Salomé Prat
    Research
    Nature
    Volume: 451, P: 480-484

  • The authors identified a sub-clade of NPF transporters that orchestrates GA12 long-distance shoot-to-root translocation. Once in the phloem unloading zone, ABA and GA are loaded into pericycle vacuoles and then slowly released to induce endodermal suberin formation in the maturation zone.

    • Jenia Binenbaum
    • Nikolai Wulff
    • Eilon Shani
    Research
    Nature Plants
    Volume: 9, P: 785-802