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Science 299 (5614): 1853-1854

Copyright © 2003 by the American Association for the Advancement of Science

BOTANY:
Relieving DELLA Restraint

Nicholas P. Harberd

Phytohormones such as gibberellins are known to promote plant growth, but it is unclear how they do this. In a Perspective, Harberd discusses new work (Sasaki et al.) that reveals the biochemical basis of the relief-of-restraint model of plant growth regulation. A gibberellin signal promotes proteasomal degradation of DELLA proteins, which normally restrain plant growth.

The author is at the John Innes Centre, Norwich, Norfolk NR4 7UH, UK. E-mail: nicholas.harberd{at}bbsrc.ac.uk

THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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The Cold-Inducible CBF1 Factor-Dependent Signaling Pathway Modulates the Accumulation of the Growth-Repressing DELLA Proteins via Its Effect on Gibberellin Metabolism.
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Global Identification of DELLA Target Genes during Arabidopsis Flower Development.
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The plant stress hormone ethylene controls floral transition via DELLA-dependent regulation of floral meristem-identity genes.
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DELLAs Contribute to Plant Photomorphogenesis.
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Gibberellin regulates Arabidopsis floral development via suppression of DELLA protein function.
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