Gibberellin Acts Positively Then Negatively to Control Onset of Flower Formation in<i>Arabidopsis</i>

DOI Web Site 9 Citations 65 References
  • Nobutoshi Yamaguchi
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, PA 19104–6018, USA.
  • Cara M. Winter
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, PA 19104–6018, USA.
  • Miin-Feng Wu
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, PA 19104–6018, USA.
  • Yuri Kanno
    RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045, Japan.
  • Ayako Yamaguchi
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, PA 19104–6018, USA.
  • Mitsunori Seo
    RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045, Japan.
  • Doris Wagner
    Department of Biology, University of Pennsylvania, 415 South University Avenue, Philadelphia, PA 19104–6018, USA.

Description

<jats:title>One Hormone, Two Phases</jats:title><jats:p>The switch from vegetative growth to flowering in the plant<jats:italic>Arabidopsis</jats:italic>involves two phases—inflorescence branching and flowering.<jats:bold>Yamaguchi<jats:italic>et al.</jats:italic></jats:bold>(p.<jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6184" page="638" related-article-type="in-this-issue" vol="344" xlink:href="10.1126/science.1250498">638</jats:related-article>) examined how the phytohormone gibberellin regulates each phase differently. First, gibberellin levels increase and stimulate production of key flowering factors, one of which degrades gibberellin. As gibberellin levels then fall, the next phase of flowering factors is released from gibberellin repression. By regulating inflorescence branching separately from flowering, this system determines overall seed yield.</jats:p>

Journal

  • Science

    Science 344 (6184), 638-641, 2014-05-09

    American Association for the Advancement of Science (AAAS)

Citations (9)*help

See more

References(65)*help

See more

Related Projects

See more

Details 詳細情報について

Report a problem

Back to top