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| Subject Categories: Plant Biology |
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| The EMBO Journal
(2007) 26, 2158–2168, doi:10.1038/sj.emboj.7601658 Published online 29 March 2007 |
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| A permeable cuticle in Arabidopsis leads to a strong resistance to Botrytis cinerea |
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| Michael Bessire1, Céline Chassot2, Anne-Claude Jacquat2, Matt Humphry3, Sandra Borel1, Jean MacDonald-Comber Petétot1, Jean-Pierre Métraux2 and Christiane Nawrath1 |
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1 Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland 2 Department of Biology, University of Fribourg, Fribourg, Switzerland 3 Department of Plant–Microbe Interactions, Max Planck Institute for Plant Breeding Research, Köln, Germany To whom correspondence should be addressed Christiane Nawrath, Department of Plant Molecular Biology, University of Lausanne, Biophore Building, Quarter UNIL/Sorge, CH-1015 Lausanne, Switzerland, Tel.: +41 21 692 4256; Fax: +41 21 692 4195. E-mail: Christiane.Nawrath@unil.ch Received 8 September 2006; Accepted 23 February 2007; Published online 29 March 2007. |
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| Abstract |
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| The plant cuticle composed of cutin, a lipid-derived polyester, and cuticular waxes covers the aerial portions of plants and constitutes a hydrophobic extracellular matrix layer that protects plants against environmental stresses. The botrytis-resistant 1 (bre1) mutant of Arabidopsis reveals that a permeable cuticle does not facilitate the entry of fungal pathogens in general, but surprisingly causes an arrest of invasion by Botrytis. BRE1 was identified to be long-chain acyl-CoA synthetase2 (LACS2) that has previously been shown to be involved in cuticle development and was here found to be essential for cutin biosynthesis. bre1/lacs2 has a five-fold reduction in dicarboxylic acids, the typical monomers of Arabidopsis cutin. Comparison of bre1/lacs2 with the mutants lacerata and hothead revealed that an increased permeability of the cuticle facilitates perception of putative elicitors in potato dextrose broth, leading to the presence of antifungal compound(s) at the surface of Arabidopsis plants that confer resistance to Botrytis and Sclerotinia. Arabidopsis plants with a permeable cuticle have thus an altered perception of their environment and change their physiology accordingly. |
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| Keywords: cutin, cuticle, environmental stresses, lipid biosynthesis, pathogen defence |
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Top of page MORE ARTICLES LIKE THISThese links to content published by NPG are automatically generated RESEARCHA permeable cuticle in Arabidopsis leads to a strong resistance to Botrytis cinerea The EMBO Journal Article The EMBO Journal Article (21 Jul 2004) Nature Article (28 Sep 1963) |
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