Cutin


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

cutin

[′kyüt·ən]
(biochemistry)
A mixture of fatty substances characteristically found in epidermal cell walls and in the cuticle of plant leaves and stems.

Cutin

 

the most important component of the cuticle of plants, secreted by the underlying epidermis.

The principal components of cutin are ω-oxymonocarboxylic acids, which contain 16 and 18 atoms of carbon in an un-branched chain and two or three hydroxyl groups. The cutin content in the epidermis varies greatly (from 0.8 percent, in birch leaves, to more than 15 percent, in agave leaves). Cutin’s resistance to external influences and its water-repellent properties account for its protective role: the cutinized epidermis of the plants protects them from water loss and penetration by microorganisms.

References in periodicals archive ?
1972) Struc ture and biosynthesis of the hydroxyl fatty acids of cutin in Vicia faba leaves.
According to Nevo, once we can fully understand the mechanism behind the production of cutin and discover genetic variants of the Eibi1 gene, we will have the ability to enhance the cuticle formation of wheat and barley species so as to make them more resistant to water loss and more durable in the dryer conditions on land.
Herbaceous samples pose a more difficult problem, most notably because of the higher protein contents and the frequent appearance of waxes from cutin when leafy materials are subjected to analysis.
The stem's outermost layer is composed of epidermal cells that contain a waxy layer called cutin.
The hydrolysis of potato and Swedish turnip peels was very limited, because of the high cutin or suberin content on the vegetable surface.
They often involve large amounts of cutin and may serve as water loss protection.
Det Nigel Cutin, of Newark CID, said: "This was a callous attack.
Cellulose (plant cell-wall fiber) is very resistant to decomposition, lignin (a cellulose-binder) is even more resistant, and suberin and cutin (waxy, resinous plant coverings) are among the most resistant organic materials known.
The reason is that enzymes that hyclrolyze naturally occurring hydrophobic (poly)esters such as cutin and lipids may also attack PCL (27, 28).
However, 13C CPMAS NMR shows that foliar litter is actually rather low in lignin (5-10%), and may contain similar or higher proportions of two other biopolymers, cutin and condensed tannins (CT) [3].
Insoluble components are found primarily in cellulose (the least soluble of all fibers), hemicellulose, lignin, cutin and waxes.
In fact, Kauffman could wind up financing the future of hundreds of inner-city students like Syreeta, contingent on a deal he cutin the fall of 1988 with some 300 students at Westport High School in Kansas City, Mo.