The
middle lamella is a
pectin layer which cements the
cell walls of two adjoining
cells together. Plants need this to give them stability and so that they can form
plasmodesmata between the cells. It is the first formed layer which is deposited at the time of
cytokinesis. The cell plate that is formed during cell division itself develops into middle lamella or lamellum. The middle lamella is made up of calcium and magnesium pectates.