Université de Fribourg

Wounding of Arabidopsis leaves causes a powerful but transient protection against Botrytis infection

Chassot, Céline ; Buchala, Antony ; Schoonbeek, Henk-jan ; Métraux, Jean-Pierre ; Lamotte, Olivier

In: The Plant Journal, 2008///doi:10.1111/j.1365-313X.2008.03540.x

Physical injury inflicted on living tissue makes it vulnerable to invasion by pathogens. Wounding of Arabidopsis thaliana leaves, however, does not conform to this concept and leads to immunity to Botrytis cinerea, the causal agent of grey mould. In wounded leaves, hyphal growth was strongly inhibited compared to unwounded controls. Wound-induced resistance was not associated with salicylic...

Université de Fribourg

A permeable cuticle in Arabidopsis leads to a strong resistance to Botrytis cinerea

Bessire, Michael ; Chassot, Céline ; Jacquat, Anne-Claude ; Humphry, Matt ; Borel, Sandra ; MacDonald-Comber Petétot, Jean ; Métraux, Jean-Pierre ; Nawrath, Christiane

In: The EMBO Journal, 2007, vol. 26, no. 8, p. 2158–2168

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...

Université de Fribourg

Cuticular defects lead to full immunity to a major plant pathogen

Chassot, Céline ; Nawrath, Christiane ; Métraux, Jean-Pierre

In: The Plant Journal, 2007, vol. 49, no. 6, p. 972-980

In addition to its role as a barrier, the cuticle is also a source of signals perceived by invading fungi. Cuticular breakdown products have been shown previously to be potent inducers of cutinase or developmental processes in fungal pathogens. Here the question was addressed as to whether plants themselves can perceive modifications of the cuticle. This was studied using Arabidopsis...