Ploidy and size phenomena are observed to be correlated across several biological scales,
from subcellular to organismal. Two kinds of ploidy change can affect plants. Whole-genome …

How organs reach their final shape is a central yet unresolved question in developmental
biology. Here we investigate whether mechanical cues contribute to this process. We …

Cell geometry has long been proposed to play a key role in the orientation of symmetric cell
division planes. In particular, the recently proposed Besson–Dumais rule generalizes …

Mechanical forces have emerged as coordinating signals for most cell functions. Yet,
because forces are invisible, map** tensile stress patterns in tissues remains a major …

To follow the dynamics of meiosis in the model plant Arabidopsis, we have established a live
cell imaging setup to observe male meiocytes. Our method is based on the concomitant …

A landmark of developmental biology is the production of reproducible shapes, through
stereotyped morphogenetic events. At the cell level, growth is often highly heterogeneous …

Multicellular development produces patterns of specialized cell types. Yet, it is often unclear
how individual cells within a field of identical cells initiate the patterning process. Using live …

Using the plant model Arabidopsis, the relationship between day length, the size of the
shoot apical meristem, and the robustness of phyllotactic patterns were analysed. First, it …

Exogenous mechanical perturbations on living tissues are commonly used to investigate
whether cell effectors can respond to mechanical cues. However, in most of these …

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 …