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BOTANY: Relieving DELLA Restraint

Access to the article is free, however registration and sign-in are required. 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.

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