
Suberin is a waxy substance found in higher plants. Suberin is a main constituent of cork, and is named after the Cork Oak, Quercus suber. ==Anatomy and physiology== Suberin is highly hydrophobic and a somewhat `rubbery` material. Its main function is to prevent water from penetrating the tissue. In roots suberin is deposited in the radial and t.....
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http://en.wikipedia.org/wiki/Suberin

• (n.) A material found in the cell walls of cork. It is a modification of lignin.
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http://thinkexist.com/dictionary/meaning/suberin/

(from the article `angiosperm`) ...it is considered to be of secondary origin (in contrast to the primary origin of the epidermis from the protoderm). At maturity the cork cells are ... Cell wall plastics such as lignin, cutin, and suberin all contain a variety of organic compounds cross-linked into tight three-dimensional networks ... ...
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http://www.britannica.com/eb/a-z/s/177

<protein> Fatty substance, containing long chain fatty acids and fatty esters, found in the cell walls of cork cells (phellem) in higher plants. Also found in the Casparian band. Renders the cell wall impervious to water. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973

Fatty substance, containing long-chain fatty acids and fatty esters, found in the cell walls of cork cells (phellem) in higher plants. Also found in the Casparian band. Renders the cell wall impervious to water.
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Su'ber·in noun [ Latin
suber the cork tree: confer French
subérine .]
(Botany) A material found in the cell walls of cork. It is a modification of lignin.
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http://www.encyclo.co.uk/webster/S/222

a waxlike, fatty substance, occurring in cork cell walls and in or between other cells, that on alkaline hydrolysis yields chiefly suberic acid.
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https://www.infoplease.com/dictionary/suberin
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