Temporal changes in surface tension guide microtubule organization and accurate asymmetric division of Arabidopsis zygotes - PubMed
3 hours ago
- #asymmetric division
- #zygote development
- #microtubules
- The zygote of Arabidopsis thaliana undergoes polar elongation with a transverse microtubule (MT) band at the tip, crucial for asymmetric division.
- A bidirectional feedback mechanism exists: the MT band supports elongation, while growth-induced surface tension at the tip promotes MT band formation.
- After elongation, the MT band guides the preprophase band to accurately determine the cell division site, ensuring proper asymmetric division.
- The study combines live-cell imaging, mechanical simulation, and perturbation analyses to demonstrate these interactions.