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Article Dans Une Revue (Article De Synthèse) Philosophical Transactions of the Royal Society B: Biological Sciences Année : 2017

Flower development: from morphodynamics to morphomechanics

Résumé

The shoot apical meristem (SAM) is a small population of stem cells that continuously generates organs and tissues. We will discuss here flower formation at the SAM, which involves a complex network of regulatory genes and signalling molecules. A major downstream target of this network is the extracellular matrix or cell wall, which is a local determinant for both growth rates and growth directions. We will discuss here a number of recent studies aimed at analysing the link between cell wall structure and molecular regulation. This has involved multidisciplinary approaches including quantitative imaging, molecular genetics, computational biology and biophysics. A scenario emerges where molecular networks impact on both cell wall anisotropy and synthesis, thus causing the rapid outgrowth of organs at specific locations. More specifically, this involves two interdependent processes: the activation of wall remodelling enzymes and changes in microtubule dynamics. This article is part of the themed issue 'Systems morphodynamics: understanding the development of tissue hardware'.

Dates et versions

hal-01608345 , version 1 (03-10-2017)

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Ursula Abad Vivero, Massimiliano Sassi, Jan Traas. Flower development: from morphodynamics to morphomechanics. Philosophical Transactions of the Royal Society B: Biological Sciences, 2017, 372 (1720), ⟨10.1098/rstb.2015.0545⟩. ⟨hal-01608345⟩
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