Secondary meristem located in the cortex produces layers of cork cells as part of secondary growth in plants. This process adds to the thickness and protective function of the outer layer of branches and stems.
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Secondary meristem located in the cortex produces layers of cork cells as part of secondary growth in plants. This process adds to the thickness and protective function of the outer layer of branches and stems.
The secondary meristem, specifically the cork cambium (phellogen), is responsible for cork formation. It arises from the lateral meristem and produces cork cells (phellem) outward and phelloderm inward. Cork cells, once matured, become suberized and die, forming a protective, impermeable outer layer that insulates and protects the plant from environmental stress.