Robust organ size in Arabidopsis is primarily governed by cell growth rather than cell division patterns.

ABSTRACT: Organ sizes and shapes are highly reproducible, or robust, within a species and individuals. Arabidopsis thaliana sepals, which are the leaf-like organs that enclose flower buds, have consistent size and shape, which indicates robust development. Counterintuitively, variability in cell growth rate over time and between cells facilitates robust development because cumulative cell growth averages to a uniform rate. Here we investigate how sepal morphogenesis is robust to changes in cell division but not robust to changes in cell growth variability. We live image and quantitatively compare the development of sepals with increased or decreased cell division rate (lgo mutant and LGO overexpression, respectively), a mutant with altered cell growth variability (ftsh4),

SUBMITTER: Burda I 

PROVIDER: S-EPMC10680605 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature