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Science 329 (5997): 1290-1291

Copyright © 2010 by the American Association for the Advancement of Science

Plant Science

Oscillating Roots

Jan Traas, and Teva Vernoux

During embryo formation in higher plants, only a rudimentary body forms, consisting of an embryonic root, a stem, and a limited number of leaves. The rest of the plant, including its extensive network of branching roots and stems, is derived from two populations of stem cells at the tips (meristems) of the embryonic root and shoot. The developmental mechanisms that control this branching, however, have been unknown. On page 1306 of this issue, Moreno-Risueno et al. (1) demonstrate that cyclic expression of genes in root meristems can generate the elaborate network of branching roots that anchors the plant and provides it with essential nutrients.

Laboratoire de Reproduction et Développement des Plantes, INRA, CNRS, ENS-Lyon, 46 Allée d'Italie, 69364 Lyon, France.

E-mail: jan.traas{at}

Intercellular Communication during Plant Development.
J. M. Van Norman, N. W. Breakfield, and P. N. Benfey (2011)
PLANT CELL 23, 855-864
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