A receptor-like mechanosensitive protein governs preprophase band positioning for asymmetric cell divisions and SC morphogenesis - PubMed
4 hours ago
- #stomatal development
- #asymmetric cell division
- #mechanosensitive protein
- Asymmetric cell division is important for cellular diversity in plants and is mechanosensitive, with preprophase band (PPB) formation depending on cell-wall mechanical properties.
- A maize receptor-like protein, KAI1, acts as a master regulator of subsidiary cell formation in the stomatal complex by perceiving cell wall rigidity via pectin interaction.
- KAI1 governs division-plane orientation in subsidiary mother cells (SMCs) through mechanochemical signaling, recruiting tubulin for PPB positioning to direct division-plane specification.
- This mechanism mediates extracellular matrix cues to cytoskeletal reorganization during asymmetric division, controlling SMC polarization and subsidiary cell morphogenesis in stomatal development.