Abstract
Adverse growth conditions, such as excess drought and salinity, tend to cause stunted growth in plants. Achard et al. now show that this growth restraint is an actively controlled process, not simply a by-product of disrupted metabolism. The growth restraint is imposed by DELLA proteins, normally localized to the cell nucleus. Arabidopsis has five related DELLA proteins encoded in its genome. The DELLA family of proteins seems to integrate hormonal and environmental signals to fine-tune the balance between growth and survival. P. Achard, H. Cheng, L. De Grauwe, J. Decat, H. Schoutteten, T. Moritz, D. Van Der Straeten, J. Peng, N. P. Harberd, Integration of plant responses to environmentally activated phytohormonal signals. Science 311 , 91-94 (2006). [Abstract] [Full Text]
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