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Sci. Signal., 14 September 2010
Vol. 3, Issue 139, p. ec283
[DOI: 10.1126/scisignal.3139ec283]


Plant Biology The Root of the Problem

Pamela J. Hines

Science, AAAS, Washington, DC 20005, USA

Developmental processes can define repeated patterns of structure, such as somites in vertebrates. In plants, too, repeated structures arise during growth and development. As the above-ground shoot grows, it sends out leaves or branches at intervals guided by hormone signaling. As the below-ground root grows, it too ramifies, sending out lateral roots. Moreno-Risueno et al. (see the Perspective by Traas and Vernoux) explored the expression of genes underlying development of lateral roots and found that oscillations in gene expression guide the specification of lateral roots.

M. A. Moreno-Risueno, J. M. Van Norman, A. Moreno, J. Zhang, S. E. Ahnert, P. N. Benfey, Oscillating gene expression determines competence for periodic Arabidopsis root branching. Science 329, 1306–1311 (2010). [Abstract] [Full Text]

J. Traas, T. Vernoux, Oscillating roots. Science 329, 1290–1291 (2010). [Abstract] [Full Text]

Citation: P. J. Hines, The Root of the Problem. Sci. Signal. 3, ec283 (2010).

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