Mechanical stress initiates and sustains the morphogenesis of wavy leaf epidermal cells

摘要: Pavement cells form wavy interlocking patterns in the leaf epidermis of many plants. We use computational mechanics to simulate morphogenetic process based on microtubule organization and cell wall chemistry. Based silico simulations experimental evidence, we suggest that a multistep underlies morphogenesis pavement cells. The model predicts alternatingly located, feedback-augmented mechanical heterogeneity periclinal anticlinal walls. It suggests emergence waves is created by stiffening emerging indented sides, an effect matches cellulose de-esterified pectin wall. Further, conceptual evidence for buckling walls provided, mechanism has potential initiate de novo may precede chemical geometrical symmetry breaking.