Strengthening fabric

Strengthening tissue ( stereome ; Greek sterígein, support) describes the plant tissue in botany , which is responsible, among other things, for the support of the plant. The solidifying tissue is divided into collenchyma and sclerenchyma .

The so-called strengthening tissue is dense, partly dead tissue, the cell walls of which are locally or generally thickened by the accumulation of particularly cellulose-rich wall layers. This possibility is also realized with the armoring of fruits and seeds.

Collenchyma

The collenchyme is the strengthening tissue of growing and herbaceous plant parts . The prosenchymatic cells are alive and capable of growth and division ( see also mitosis ) . The wall thickenings consist of alternating primary wall lamellas made of cellulose and pectin substances . Their strength is only moderate.

Sclerenchyma

The sclerenchyme is a dead tissue made of very thick-walled, narrow-lumen cells that only occurs in fully-grown plant parts. There are two forms, namely prosenchymatic sclerenchymal fibers and isodiametric or palisade-shaped stone cells, which are also known as sclereids .

literature

• Peter Sitte , Elmar Weiler , Joachim W. Kadereit , Andreas Bresinsky , Christian Körner : Textbook of botany for universities . Founded by Eduard Strasburger . 35th edition. Spektrum Akademischer Verlag, Heidelberg 2002, ISBN 3-8274-1010-X .