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Encyclopedia > Cutin

Cutin is a waxy substance which is a component of cuticle at the surface of leaves in plants. It consists of fatty acids and their derivatives which form ester bonds.

There are two major monomer families of cutin, C16 and C18-families. The C16 family consists mainly of 16-hydroxypalmitate and 9,16 or 10,16-dihydroxypalmitate. The C18 family consists mainly of 18-hydroxyoleate, 9,10-epoxy-18-hydroxystearate, and 9,10,18-trihydroxystearate.

Cutin is sometimes confused with suberin.

  Results from FactBites:
The Acyl-CoA Synthetase Encoded by LACS2 Is Essential for Normal Cuticle Development in Arabidopsis - Science - ... (9671 words)
We conclude that the LACS2 isozyme catalyzes the synthesis of [omega]-hydroxy fatty acyl-CoA intermediates in the pathway to cutin synthesis.
The fatty acid precursor of epicuticular wax is predominantly 18:0, whereas the monomers of cutin are synthesized from 16:0 and 18:1 fatty acyl-CoAs.
The 40% reduction in thickness of the cutin layer on the abaxial epidermis of lacs2-1 leaves is accompanied by a 40% reduction in the thickness of the primary cell wall of the epidermal cells.
cutin (478 words)
The major structural component of the cuticle is cutin, a biopolyester composed of interesterified hydroxy, and epoxy-hydroxy C16 and C18 fatty acids.
Cutin monomers produced by the action of cutinase have been recently shown to be important as signals, in fungi to induce the expression of cutinase, and in plants to potentially activate defence mechanisms.
For instance, it is unknown where cutin monomers/oligomers are made and how they get to the surface, how the polymerisation takes place, what regulates the amount of cutin and which effects it has on the physiology of the plant.
  More results at FactBites »



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