suberin
a substance that is acted upon by an enzyme
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
suberin Waxy, waterproof chemical in some plant cells, notably cork (in stems) and endodermis cells (in roots).
suberin. A waxy substance, resistant to microbial attack, formed in the corky cells of periderm layers.
suberization. The formation of periderm layers on the cut surfaces or wounds of potato tubers.
suberin
A complex of fatty substances present in the wall of cork tissue that waterproofs it and makes it resistant to decay.
submucosa
Located below the mucosal layer.
suberin A fatty material found in the cell walls of cork cells and the Casparian strip of the endodermis.
sublimation The process by which water can move between solid and gaseous states without ever becoming liquid.
But suberin is as impervious to air as it is to water. The gas exchange needs of the living cells beneath the cork is met by openings in the cork called lenticels.
"Glycerol Is a Suberin Monomer. New Experimental Evidence for an Old Hypothesis". Plant Physiol. 119: 1137-1146
^ Buchanan; Gruissem, Jones (2000). Biochemistry & molecular biology of plants, 1st ed., American society of plant physiology.
The endodermis has a strip of water-proof material (containing suberin) known as the Casparian strip that forces water through the endodermal cell and in such a way regulates the amount of water getting to the xylem.
Endodermis is tightly packed together and contains Casparian strips on their radial walls which are made of suberin mainly, a waxy substance which prevents water from flowing back into the soil.
of woody tissues and is also common in the secondary walls of xylem vessels, which are central in providing structural support to plants. Lignin also makes plant cell walls less vulnerable to attack by fungi or bacteria, as do cutin, suberin, ...
 See also: Trans, Plant, Cells, Organ, Tissue
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