A computational framework for 3D mechanical modeling of plant morphogenesis with cellular resolution.

Area of Science:

• Plant biology
• Developmental biology
• Biophysics

Background:

• Understanding morphogenesis requires integrating genetic regulation, molecular networks, and physical forces.
• Plant cell growth is constrained by rigid cell walls and high turgor pressure.

Purpose of the Study:

• To develop a conceptual and modeling framework for integrated understanding of plant morphogenesis.
• To investigate how modulating cell wall extensibility and turgor pressure drives growth.

Main Methods:

• A 3D virtual tissue model simulating plant growth.
• Simulations exploring lateral organ formation and flower development.
• Analysis of cell-autonomous and non-cell-autonomous growth mechanisms.

Main Results:

• Turgor pressure forces drive growth both cell-autonomously and non-cell-autonomously.
• Different growth scenarios yield distinct, testable predictions for organ mechanics and geometry.
• A limited set of gene activities can explain complex organ outgrowth shapes.

Conclusions:

• The model provides a framework for understanding how biophysical properties and genetic regulation interact during plant morphogenesis.
• This approach offers testable predictions for experimental validation in plant development.