middle lamella


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Related to middle lamella: Primary cell wall
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Fig. 222 Middle lamella . Transverse section through several cell walls.

middle lamella

(pl. lamellae) the thin membrane separating two adjacent plant cells, whose function is to cement them together. It consists of varying amounts of PECTIN, depending on IAA concentration (see Fig. 222 ).
References in periodicals archive ?
The hyphae expands within the lumen of the cell [Fig 4-9] Hyphae were also observed penetrating through the middle lamella of adjacent cells [Fig 5,6,8,9] .
During weathering-induced photodegradation, loss of lignin from the lignin-rich middle lamella results in surface fibers being liberated from the wood surface.
In this phase, rupture of the middle lamella was seen; this and the presence of RER and dictyosomes may be evidence of enzyme synthesis, which corroborates this hypothesis.
In addition, Figures 16 & 17 indicate that torus degradation can vary and can be especially pronounced in the central layer (or middle lamella region) of this thickening.
Prior to lignification, during cell elongation, polysaccharides, proteins, and hydroxycinnamic acids are incorporated into the developing pectin-rich middle lamella and primary cell wall.
However, preweathered surfaces had lost all lignin in the middle lamella and there was cell separation, whereas in peracetic acid-treated boards, there was more or less complete lignin removal from the cell corner middle lamella only and partial lignin removal from other cell wall regions.
Pectin is a complex polysaccharide found in the cell wall and middle lamella of plant tissue.