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The Polyketide Components of Waxes and the Cer-cqu Gene Cluster Encoding a Novel Polyketide Synthase, the β-Diketone Synthase, DKS

Section for Biomolecular Sciences, Department of Biology, University of Copenhagen, Ole Maaloees Vej 5, DK-2200 Copenhagen N, Denmark
Plants 2017, 6(3), 28; https://doi.org/10.3390/plants6030028
Received: 2 May 2017 / Revised: 21 June 2017 / Accepted: 30 June 2017 / Published: 10 July 2017
(This article belongs to the Special Issue The Plant Cuticle)
The primary function of the outermost, lipophilic layer of plant aerial surfaces, called the cuticle, is preventing non-stomatal water loss. Its exterior surface is often decorated with wax crystals, imparting a blue–grey color. Identification of the barley Cer-c, -q and -u genes forming the 101 kb Cer-cqu gene cluster encoding a novel polyketide synthase—the β-diketone synthase (DKS), a lipase/carboxyl transferase, and a P450 hydroxylase, respectively, establishes a new, major pathway for the synthesis of plant waxes. The major product is a β-diketone (14,16-hentriacontane) aliphatic that forms long, thin crystalline tubes. A pathway branch leads to the formation of esterified alkan-2-ols. View Full-Text
Keywords: type III polyketide synthase (PKS); diketone synthase (DKS); β-diketones; hydroxy-β-diketones; esterified alkan-2-ols; Cer-cqu gene cluster; plant waxes; cytochrome P450; lipase/carboxyl esterase/thioesterase type III polyketide synthase (PKS); diketone synthase (DKS); β-diketones; hydroxy-β-diketones; esterified alkan-2-ols; Cer-cqu gene cluster; plant waxes; cytochrome P450; lipase/carboxyl esterase/thioesterase
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MDPI and ACS Style

Von Wettstein-Knowles, P. The Polyketide Components of Waxes and the Cer-cqu Gene Cluster Encoding a Novel Polyketide Synthase, the β-Diketone Synthase, DKS. Plants 2017, 6, 28. https://doi.org/10.3390/plants6030028

AMA Style

Von Wettstein-Knowles P. The Polyketide Components of Waxes and the Cer-cqu Gene Cluster Encoding a Novel Polyketide Synthase, the β-Diketone Synthase, DKS. Plants. 2017; 6(3):28. https://doi.org/10.3390/plants6030028

Chicago/Turabian Style

Von Wettstein-Knowles, Penny. 2017. "The Polyketide Components of Waxes and the Cer-cqu Gene Cluster Encoding a Novel Polyketide Synthase, the β-Diketone Synthase, DKS" Plants 6, no. 3: 28. https://doi.org/10.3390/plants6030028

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