IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v3y2012i1d10.1038_ncomms1810.html
   My bibliography  Save this article

TEMPRANILLO genes link photoperiod and gibberellin pathways to control flowering in Arabidopsis

Author

Listed:
  • Michela Osnato

    (Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Parc de Recerca UAB, Bellaterra (Cerdanyola del Vallés))

  • Cristina Castillejo

    (Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Parc de Recerca UAB, Bellaterra (Cerdanyola del Vallés))

  • Luis Matías-Hernández

    (Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Parc de Recerca UAB, Bellaterra (Cerdanyola del Vallés))

  • Soraya Pelaz

    (Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Parc de Recerca UAB, Bellaterra (Cerdanyola del Vallés)
    ICREA (Institució Catalana de Recerca i Estudis Avançats))

Abstract

In Arabidopsis, FLOWERING LOCUS T (FT) promotes flowering in response to long days in the photoperiod pathway, while signalling downstream gibberellin (GA) perception is critical for flowering under short days. Previously we have established that the TEMPRANILLO (TEM) genes have a pivotal role in the direct repression of FT. Here we show that TEM genes directly regulate the expression of the GA4 biosynthetic genes GA 3–oxidase1 and 2 (GA3OX1 and GA3OX2). Plants overexpressing TEM genes resemble GA-deficient mutants, and conversely, TEM downregulation give rise to elongated hypocotyls perhaps as a result of an increase in GA content. We consistently find that TEM1 represses GA3OX1 and GA3OX2 by directly binding a regulatory region positioned in the first exon. Our results indicate that TEM genes seem to link the photoperiod and GA-dependent flowering pathways, controlling floral transition under inductive and non-inductive day lengths through the regulation of the floral integrators.

Suggested Citation

  • Michela Osnato & Cristina Castillejo & Luis Matías-Hernández & Soraya Pelaz, 2012. "TEMPRANILLO genes link photoperiod and gibberellin pathways to control flowering in Arabidopsis," Nature Communications, Nature, vol. 3(1), pages 1-8, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1810
    DOI: 10.1038/ncomms1810
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms1810
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms1810?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
    ---><---

    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:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1810. 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.