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Plants 2017, 6(3), 27; doi:10.3390/plants6030027

Cuticular Waxes of Arabidopsis thaliana Shoots: Cell-Type-Specific Composition and Biosynthesis

1
Department of Botany, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
2
Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
*
Author to whom correspondence should be addressed.
Received: 1 June 2017 / Revised: 2 July 2017 / Accepted: 2 July 2017 / Published: 7 July 2017
(This article belongs to the Special Issue The Plant Cuticle)
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Abstract

It is generally assumed that all plant epidermis cells are covered with cuticles, and the distinct surface geometries of pavement cells, guard cells, and trichomes imply functional differences and possibly different wax compositions. However, experiments probing cell-type-specific wax compositions and biosynthesis have been lacking until recently. This review summarizes new evidence showing that Arabidopsis trichomes have fewer wax compound classes than pavement cells, and higher amounts of especially long-chain hydrocarbons. The biosynthesis machinery generating this characteristic surface coating is discussed. Interestingly, wax compounds with similar, long hydrocarbon chains had been identified previously in some unrelated species, not all of them bearing trichomes. View Full-Text
Keywords: trichomes; cuticular wax; chain length; Arabidopsis thaliana; KCS; elongation; fatty acid elongase complex; ketoacyl-CoA synthase trichomes; cuticular wax; chain length; Arabidopsis thaliana; KCS; elongation; fatty acid elongase complex; ketoacyl-CoA synthase
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hegebarth, D.; Jetter, R. Cuticular Waxes of Arabidopsis thaliana Shoots: Cell-Type-Specific Composition and Biosynthesis. Plants 2017, 6, 27.

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