Middle lamella

The middle lamella is made up of calcium and magnesium pectates.

[3][4] In plants, the pectins form a unified and continuous layer between adjacent cells.

In such cases, the two adjacent primary walls and the middle lamella, and perhaps the first layer of the secondary wall of each cell, may be called a compound middle lamella.

When the middle lamella is degraded by enzymes, as happens during fruit ripening and abscission, the adjacent cells will separate.

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