Correct spelling for the English word "paralinin" is [pˈaɹələnˌɪn], [pˈaɹələnˌɪn], [p_ˈa_ɹ_ə_l_ə_n_ˌɪ_n] (IPA phonetic alphabet).
Paralinin is a noun that refers to a non-proteinaceous, fibrous substance found in the cytoplasm of plant cells. It is primarily composed of carbohydrates and is known for its structural role in providing support and strength to the cell wall. Paralinin is commonly found in the form of tightly packed cellulose microfibrils, which form a mesh-like network around the cell, giving it rigidity and shape.
In plant cells, paralinin plays a crucial role in maintaining cell structure and integrity, as well as in providing resistance against external mechanical forces. It works in conjunction with other components of the cell wall, such as lignin and pectin, to form a protective barrier that helps prevent the cell from collapsing under pressure or losing its shape.
The presence of paralinin is particularly prominent in cells of tissues that require high mechanical support, such as the stems, roots, and leaves of plants. It is also involved in the growth and expansion of plant cells, as it determines the direction and extent of cell elongation during development.
In summary, paralinin is a carbohydrate-based fibrous substance found in plant cells that contributes to the structural integrity and support of the cell wall. Its presence is vital for maintaining cell shape, preventing collapse under mechanical stress, and facilitating growth and expansion in plant tissues.
Achromatin, nucleoplasm, caryochylema.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.