Lignification


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Related to Lignification: lignin, delignification, lignified

Lignification

 

in plants, a change in the cell walls caused by lignin, which fills the interstices between the microfibrillae of cellulose. Lignification begins with the middle lamella (the primary membranes of two neighboring cells with an interlayer of intercellular matter) and then spreads to the secondary wall. As a result of lignification, the wall becomes hard and resistant to microorganisms and fungi but loses its elasticity. Lignification of cell walls is characteristic of all higher plants except mosses. The mechanical strength of wood and sclerenchyma, which consist of lignified cells, depends on the volume and distribution of the cells in the plant organs.

References in periodicals archive ?
These are fibers that contain a septum or a thin transverse wall across the lumen, which is present in dicotyledonous plants and is formed during cell wall maturation, in which cells lose their cytoplasmic contents and lignification processes are absent (Itabashi et al.
In contrast, the incorporation of residues with wider C/N ratios and significant lignification is often associated with decreased net N mineralisation in soil and/or immobilisation (Powlson et al.
Another group declares that lignification is just like protein building, a process that's predictable and leaves few surprises.
The results of this study suggest that Al affects the activity of the wheat root tip cell wall peroxidases in vivo and that lignification is not an early response to Al stress.
However, if they are placed horizontally they will exhibit gravitropic curvature, which leads to an increase in toughness due to lignification.
To date, genetic control of the lignification process through manipulation of the bmr trait has offered the most direct and productive approach to reducing lignin content and increasing digestibility of forage sorghums (Gerhardt et al.
Isoperosidases and laccase like enzymes related with indole-acetic oxidation activity and lignification on peach fruits (Prunus persica L.
microchemical testing for degree of lignification 8.
For example, lignification was crucial in reducing predation by spruce bark beetles, and lignin in the roots of the date palm played a key role in defense against the fungus Fusarium.
In order to reveal the implication of the lignification pattern and the wetting ability of the vessel walls we have carried out special microscopic examinations.
Roots may also be closely associated with other organisms, such as soil biota or symbionts, and differ in their degree of lignification.