Organ geometry channels reproductive cell fate in the Arabidopsis ovule primordium - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles eLife Year : 2021

Organ geometry channels reproductive cell fate in the Arabidopsis ovule primordium

Gabriella Mosca
Nuno Pires
Ueli Grossniklaus
Olivier Hamant
Célia Baroux

Abstract

In multicellular organisms, sexual reproduction requires the separation of the germline from the soma. In flowering plants, the female germline precursor differentiates as a single spore mother cell (SMC) as the ovule primordium forms. Here, we explored how organ growth contributes to SMC differentiation. We generated 92 annotated 3D images at cellular resolution in Arabidopsis. We identified the spatio-temporal pattern of cell division that acts in a domain-specific manner as the primordium forms. Tissue growth models uncovered plausible morphogenetic principles involving a spatially confined growth signal, differential mechanical properties, and cell growth anisotropy. Our analysis revealed that SMC characteristics first arise in more than one cell but SMC fate becomes progressively restricted to a single cell during organ growth. Altered primordium geometry coincided with a delay in the fate restriction process in katanin mutants. Altogether, our study suggests that tissue geometry channels reproductive cell fate in the Arabidopsis ovule primordium.
Fichier principal
Vignette du fichier
elife-66031-v2.pdf (6.58 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

hal-03533741 , version 1 (07-06-2022)

Licence

Identifiers

Cite

Elvira Hernandez-Lagana, Gabriella Mosca, Ethel Mendocilla-Sato, Nuno Pires, Anja Frey, et al.. Organ geometry channels reproductive cell fate in the Arabidopsis ovule primordium. eLife, 2021, 10, pp.e66031. ⟨10.7554/eLife.66031⟩. ⟨hal-03533741⟩
147 View
64 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More