Lignin is a complex organic compound that provides rigidity and strength to plant cell walls. In sclerenchyma tissue, lignin deposition in the cell walls increases their thickness, making them rigid and resistant to bending, thus providing strength to plant parts.
What is lignin, and how does it contribute to the properties of sclerenchyma tissue?
Share
Lignin is a complex polymer found in the secondary cell walls of sclerenchyma tissue in plants. Composed of phenolic compounds, lignin contributes to the rigidity and strength of the cell walls. Its presence enhances the durability of sclerenchyma cells, making them resistant to mechanical stress, decay, and microbial attacks. Lignin provides a hydrophobic nature to the cell walls, reducing water permeability and increasing structural integrity. This polymer acts as a natural binder, reinforcing the cell walls and enabling sclerenchyma tissue to offer robust and long-lasting support to plant structures, such as stems and seed coats.