The middle lamella is a pectin layer which functions to cement the two adjoining cells together of the cell wall. This is essential to plants as it gives them stability, and allows that plants can form plasmodesmata between cells. The middle lamella is the first layer that is formed, which is deposited at the time of cytokinesis. The cell plate that is molded during cell division is developed into lamellum or the middle lamella. This layer is basically made up of calcium and magnesium pectates.

What is the Middle Lamella Function

The pectins in plants form a continuous and unified layer between adjacent cells. Most of the time, the middle lamella is quite difficult to distinguish from the primary cell wall, especially in certain cells that develop a thick secondary wall. In cases like this, when the middle lamella and the two adjacent primary walls, and even the first layer of the secondary wall of every cell, is normally referred as a compound middle lamella. For the multicellular organisms, when the middle lamella dissolves, the cells will be isolated from each other. This happens when leaves and petals fall.

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