
Open access
Datum
2023-05Typ
- Journal Article
Abstract
Tissue patterning during embryonic development is remarkably precise. Here, we numerically determine the impact of the cell diameter, gradient length and the morphogen source on the variability of morphogen gradients. We show that the positional error increases with the gradient length relative to the size of the morphogen source, and with the square root of the cell diameter and the readout position. We provide theoretical explanations for these relationships, and show that they enable high patterning precision over developmental time for readouts that scale with expanding tissue domains, as observed in the Drosophila wing disc. Our analysis suggests that epithelial tissues generally achieve higher patterning precision with small cross-sectional cell areas. An extensive survey of measured apical cell areas shows that they are indeed small in developing tissues that are patterned by morphogen gradients. Enhanced precision may thus have led to the emergence of pseudostratification in epithelia, a phenomenon for which the evolutionary benefit had so far remained elusive. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000612003Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
DevelopmentBand
Seiten / Artikelnummer
Verlag
Company of BiologistsThema
Morphogen gradient; Patterning; Precision; Development; Cell sizeOrganisationseinheit
03791 - Iber, Dagmar / Iber, Dagmar
Förderung
170930 - A 3D Cell-Based Simulation Framework for Morphogenetic Problems (SNF)