Simulating Turgor-Induced Stress Patterns in Multilayered Plant Tissues.

Area of Science:

• Plant developmental biology
• Biophysics
• Computational biology

Background:

• Plant morphogenesis is driven by mechanical forces, with cell mechanosensitivity playing a key regulatory role.
• Current models often simplify meristematic tissues to the epidermis, neglecting the mechanical contribution of inner walls.

Purpose of the Study:

• To investigate the mechanical influence of inner walls on meristematic tissue homeostasis.
• To understand the role of inner walls in turgor-induced forces during plant development.

Main Methods:

• Numerical simulations using finite element meshes with subcellular resolution.
• Modeling turgor-induced loading in realistic flower buds and abstract structures.

Main Results:

• Inner walls strongly influence epidermal mechanical stress, particularly in negatively curved regions.
• A correlation between stress intensity and cell size was observed.
• Differential mechanical responses to loading were found between epidermal and inner cells.

Conclusions:

• Inner walls are crucial for maintaining mechanical homeostasis in plant meristems.
• The study highlights the importance of subcellular resolution in modeling plant mechanics.
• Simulations tracked the evolution of mechanical stresses during early flower morphogenesis.