Light Regulation of Gibberellins Metabolism in Seedling Development

  1. Xiao-Ying Zhao1,
  2. Xu-Hong Yu2,
  3. Xuan-Ming Liu1,*,
  4. Chen-Tao Lin2,*

Article first published online: 5 JAN 2007

DOI: 10.1111/j.1744-7909.2006.00407.x

Issue

Journal of Integrative Plant Biology

Journal of Integrative Plant Biology

Volume 49, Issue 1, pages 21–27, January 2007

Additional Information

How to Cite

Zhao, X.-Y., Yu, X.-H., Liu, X.-M. and Lin, C.-T. (2007), Light Regulation of Gibberellins Metabolism in Seedling Development. Journal of Integrative Plant Biology, 49: 21–27. doi: 10.1111/j.1744-7909.2006.00407.x

Author Information

  1. 1

    Bioenergy and Biomaterial Research Center, Hunan University, Changsha 410128, China

  2. 2

    Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, CA 90095, USA

* *Author for correspondence. Tel: +1 310 206 9576; Fax: +1 310 206 3987; E-mail: <clin@mcdb.ucla.edu>

Publication History

  1. Issue published online: 5 JAN 2007
  2. Article first published online: 5 JAN 2007
  3. Received 22 Sept. 2006 Accepted 18 Oct. 2006

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Keywords:

  • phytochrome;
  • cyrptochrone;
  • gibberellins

Abstract

Light affects many aspects of plant development, including seed germination, stem elongation, and floral initiation. How photoreceptors control photomorphogenic processes is not yet fully understood. Because phytohormones are chemical regulators of plant development, it may not be surprising that light affects, directly or indirectly, cellular levels and signaling processes of various phytohormones, such as auxin, gibberellins (GA), cytokinin, ethylene, abscisic acid (ABA), and brassinosteroids (BR). Among those phytohormones, light regulation of GA metabolism has probably attracted more attention among photobi-ologists and it is arguably the most extensively studied plant hormone at present with respect to its role in photomorphogenesis. It has become increasingly clear that phytochromes and cryptochromes are the major photoreceptors mediating light regulation of GA homeostasis. This short article attempts to examine some recent developments in our understanding of how light and photoreceptors regulate GA biosynthesis and catabolism during seedling development. It is not our intention to carry out a comprehensive review of the field, and readers are referred to recent review articles for a more complete view of this area of study (Kamiya and Garcia-Martinez 1999; Hedden and Phillips 2000; Garcia-Martinez and Gil 2001; Olszewski et al. 2002; Halliday and Fankhauser 2003; Sun and Gubler 2004).

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