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Published December 12, 2008 | Supplemental Material
Journal Article Open

Developmental Patterning by Mechanical Signals in Arabidopsis

Abstract

A central question in developmental biology is whether and how mechanical forces serve as cues for cellular behavior and thereby regulate morphogenesis. We found that morphogenesis at the Arabidopsis shoot apex depends on the microtubule cytoskeleton, which in turn is regulated by mechanical stress. A combination of experiments and modeling shows that a feedback loop encompassing tissue morphology, stress patterns, and microtubule-mediated cellular properties is sufficient to account for the coordinated patterns of microtubule arrays observed in epidermal cells, as well as for patterns of apical morphogenesis.

Additional Information

© 2008 American Association for the Advancement of Science. Received for publication 8 September 2008. Accepted for publication 14 November 2008. We thank A. Roeder for critical reading of the manuscript, and P. Barbier de Reuille and IFR128 Platim for help with imaging. Supported by the International Human Frontier Science Program Organization, by U.S. Department of Energy grant FG02-88ER13873 (E.M.M.), by the Balzan Foundation (E.M.M.), and by the Swedish Research Council (H.J.).

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