Evolution of a SHOOTMERISTEMLESS transcription factor binding site promotes fruit shape determination.

ABSTRACT: In animals and plants, organ shape is primarily determined during primordium development by carefully coordinated growth and cell division^1-3. Rare examples of post-primordial change in morphology (reshaping) exist that offer tractable systems for the study of mechanisms required for organ shape determination and diversification. One such example is morphogenesis in Capsella fruits whose heart-shaped appearance emerges by reshaping of the ovate spheroid gynoecium upon fertilization⁴. Here we use whole-organ live-cell imaging and single-cell RNA sequencing (scRNA-seq) analysis to show that Capsella fruit shape determination is based on dynamic changes in cell growth and cell division coupled with local maintenance of meristematic identity. At the molecular level, we re

SUBMITTER: Hu ZC 

PROVIDER: S-EPMC11757149 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature