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Plant Cell Reports

, Volume 34, Issue 4, pp 557–572 | Cite as

Advances in the understanding of cuticular waxes in Arabidopsis thaliana and crop species

  • Saet Buyl Lee
  • Mi Chung SuhEmail author
Review

Abstract

The aerial parts of plants are covered with a cuticle, a hydrophobic layer consisting of cutin polyester and cuticular waxes that protects them from various environmental stresses. Cuticular waxes mainly comprise very long chain fatty acids and their derivatives such as aldehydes, alkanes, secondary alcohols, ketones, primary alcohols, and wax esters that are also important raw materials for the production of lubricants, adhesives, cosmetics, and biofuels. The major function of cuticular waxes is to control non-stomatal water loss and gas exchange. In recent years, the in planta roles of many genes involved in cuticular wax biosynthesis have been characterized not only from model organisms like Arabidopsis thaliana and saltwater cress (Eutrema salsugineum), but also crop plants including maize, rice, wheat, tomato, petunia, Medicago sativa, Medicago truncatula, rapeseed, and Camelina sativa through genetic, biochemical, molecular, genomic, and cell biological approaches. In this review, we discuss recent advances in the understanding of the biological functions of genes involved in cuticular wax biosynthesis, transport, and regulation of wax deposition from Arabidopsis and crop species, provide information on cuticular wax amounts and composition in various organs of nine representative plant species, and suggest the important issues that need to be investigated in this field of study.

Keywords

Arabidopsis thaliana Crop Cuticle Plant Stress Wax 

Abbreviations

ABC

ATP binding cassette

ACBP

Acyl-CoA binding protein

ACC

Acetyl-CoA carboxylase

ECR

Enoyl-CoA reductase

FAE

Fatty acids elongase

FAR

Fatty acyl-CoA reductase

GPI

Glycosylphosphatidylinositol

HCD

β-Hydroxyacyl-CoA dehydratase

KCR

β-Ketoacyl-CoA reductase

KCS

β-Ketoacyl-CoA synthase

LACS

Long chain acyl-CoA synthase

LTP

Lipid transfer proteins

MAH

Midchain alkane hydroxylase

VLCFA

Very long chain fatty acid

WSD

Bifunctional wax synthase/acyl-CoA:diacylglycerol acyltransferase

Notes

Acknowledgments

We would like to express our sincere gratitude to Ljerka Kunst (University of British Columbia) for her critical review. This work was supported by grants from the Next-Generation BioGreen 21 Program (PJ0110522015) of the Rural Development Administration, Republic of Korea, and the National Research Foundation (2013R1A2A2A01015672) of Korea.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of Bioenergy Science and TechnologyChonnam National UniversityGwangjuKorea

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