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PROTECTION (Dermal)

TİSSUE

Dermal protection tissues are the outermost layers and are usually in contact with the environment.

There are two main protection tissues:

---Epidermis ---Peridermis

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• The epidermis is the protecting outer layer of plant.

• Epidermis is commonly a single row of cells. Some exceptions are found with multiple-layered are found in some aerial roots, xerophytes plants, or some leaves of oleander and Ficus.

• Multiple-layered epidermis is called velamen in root and

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• The aerial parts of epidermal cells synthesize

cutin, a lipidic impermeable substance

deposited outside of the cell wall to form a continuous layer known as cuticle (external

layer). The cuticula layer prevents the water

lost and is a barrier against pathogens. Suberin is a cork molecule found as a out layer of root and stem and fruit epidermis.

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Cuticle

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