What is lanticels?

Lenticels are small, corky pores on the stems and roots of woody plants that allow for the exchange of gases between the plant and the atmosphere. They are found in all woody plants, but are particularly noticeable on the stems of trees and shrubs.

Lenticels are formed by the breakdown of the outer layer of cells on the stem or root, exposing the inner cells to the air. These inner cells then produce a corky material that seals the pore, preventing the plant from losing too much water.

The exchange of gases through lenticels is essential for the plant's respiration. Oxygen from the atmosphere diffuses into the plant through the lenticels, while carbon dioxide produced by the plant diffuses out. This exchange of gases is also necessary for the plant to transport water and nutrients from the roots to the leaves.

Lenticels are also important for the plant's defense against pathogens. The corky material that seals the pores helps to prevent the entry of harmful bacteria and fungi into the plant.

The size and shape of lenticels can vary depending on the plant species. Some plants have very small lenticels that are barely visible, while others have large lenticels that are quite noticeable. The arrangement of lenticels can also vary, with some plants having them evenly spaced along the stem or root, while others have them clustered together.

Lenticels are an important part of the anatomy of woody plants, and they play a vital role in the plant's respiration and defense against pathogens.