Middle lamella

The middle lamella is a pectin layer which cements the cell walls of two adjoining cells together. Plants need this to give them stability and so that they can form plasmodesmata between the cells. It is the first formed layer which is deposited at the time of cytokinesis. The cell plate that is formed during cell division itself develops into middle lamella or lamellum. The middle lamella is made up of calcium and magnesium pectates.^{[citation needed]}

In plants, the pectins form an unified and continuous layer between adjacent cells. Frequently, it is difficult to distinguish the middle lamella from the primary wall, especially in cells that develop thick secondary walls. In such cases, the two adjacent primary walls and the middle lamella, and perhaps the first layer of the secondary wall of each cell, may be called a compound middle lamella. In multicelluar organisms, when middle lamella dissolves, the cells get isolated from each other.^[1] If enzymes degrade the middle lamella, the adjacent cells will separate. This occurs when flower petals and leaves fall.

References

1. ^ Raven, P (2005). "Biology of plants", 54.

2.Telugu Akademi Hyderabad "Intermediate first year Botany"

This botany article is a stub. You can help Wikipedia by expanding it.v · Categories: Cell biology Plant anatomy Botany stubs Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Jumbo's Clown Room Antti Heinola Look at other dictionaries: middle lamella — n. Cytology a thin, sticky membrane between plant cells that cements the cell walls together …   English World dictionary middle lamella — noun : a layer of intercellular material that as seen by conventional staining and microscopic techniques lies between the apparent walls of adjacent plant cells * * * Bot. the layer of cementing material, composed of pectates and similar… …   Useful english dictionary middle lamella — noun Date: circa 1886 a layer of pectinaceous intercellular material lying between the walls of adjacent plant cells see cell illustration …   New Collegiate Dictionary middle-lamella — First part of the plant cell wall to be formed, laid down in the phragmoplast during cell division as the cell plate. Subsequently makes up the central part of the double cell wall that separates two adjacent cells, cementing together the two… …   Dictionary of molecular biology middle lamella — Bot. the layer of cementing material, composed of pectates and similar substances, between the walls of adjacent cells. [1920 25] * * * …   Universalium middle lamella — mid′dle lamel′la n. bot the layer of cementing material composed of pectates and similar substances, between the walls of adjacent cells • Etymology: 1920–25 …   From formal English to slang middle lamella — A thin exclusively plant membrane separating two adjacent protoplasts and remaining as a distinct cementing layer between adjacent cell walls …   Glossary of Biotechnology compound middle lamella — noun : the middle lamella considered as comprising the intercellular cementing layer and the primary walls on both sides of it …   Useful english dictionary true middle lamella — noun : the intercellular cementing layer of the middle lamella …   Useful english dictionary Lamella — is a term for a platelike structure, appearing in multiples, that occurs in various situations, such as biology or materials sciences. It implies a thin layer (Latin), the same derivation as for laminate . It can mean:*Lamella (zoology), a… …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”