IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v421y2003i6924d10.1038_nature01387.html
   My bibliography  Save this article

Auxin promotes Arabidopsis root growth by modulating gibberellin response

Author

Listed:
  • Xiangdong Fu

    (John Innes Centre)

  • Nicholas P. Harberd

    (John Innes Centre)

Abstract

The growth of plant organs is influenced by a stream of the phytohormone auxin that flows from the shoot apex to the tip of the root1. However, until now it has not been known how auxin regulates the cell proliferation and enlargement that characterizes organ growth. Here we show that auxin controls the growth of roots by modulating cellular responses to the phytohormone gibberellin (GA). GA promotes the growth of plants by opposing the effects of nuclear DELLA protein growth repressors2,3,4,5,6,7,8, one of which is Arabidopsis RGA (for repressor of gal-3)9,10. GA opposes the action of several DELLA proteins by destabilizing them, reducing both the concentration of detectable DELLA proteins and their growth-restraining effects9,10,11,12,13,14. We also show that auxin is necessary for GA-mediated control of root growth, and that attenuation of auxin transport or signalling delays the GA-induced disappearance of RGA from root cell nuclei. Our observations indicate that the shoot apex exerts long-distance control on the growth of plant organs through the effect of auxin on GA-mediated DELLA protein destabilization.

Suggested Citation

  • Xiangdong Fu & Nicholas P. Harberd, 2003. "Auxin promotes Arabidopsis root growth by modulating gibberellin response," Nature, Nature, vol. 421(6924), pages 740-743, February.
    • Handle: RePEc:nat:nature:v:421:y:2003:i:6924:d:10.1038_nature01387
    DOI: 10.1038/nature01387
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature01387
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature01387?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Jong-Chan Park & Nipin Sp & Hyoung Do Kim & Dong Young Kang & Il Ho Kim & Se Won Bae & Young Yang & Kyoung-Jin Jang, 2021. "The Exogenous Application of Non-Toxic Sulfur Contributes to the Growth-Promoting Effects of Leaf Lettuce ( Lactuca sativa L. var. crispa )," Agriculture, MDPI, vol. 11(8), pages 1-13, August.
    2. Bihai Shi & Amelia Felipo-Benavent & Guillaume Cerutti & Carlos Galvan-Ampudia & Lucas Jilli & Geraldine Brunoud & Jérome Mutterer & Elody Vallet & Lali Sakvarelidze-Achard & Jean-Michel Davière & Ale, 2024. "A quantitative gibberellin signaling biosensor reveals a role for gibberellins in internode specification at the shoot apical meristem," Nature Communications, Nature, vol. 15(1), pages 1-18, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:421:y:2003:i:6924:d:10.1038_nature01387. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.