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2017 ; 372
(1720
): ä Nephropedia Template TP
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Flower development: from morphodynamics to morphomechanics
#MMPMID28348258
Abad U
; Sassi M
; Traas J
Philos Trans R Soc Lond B Biol Sci
2017[May]; 372
(1720
): ä PMID28348258
show ga
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'.