Specific activation of PR-10 pathogenesis-related genes in apple by an incompatible race of Venturia inaequalis - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Biologia Plantarum Year : 2008

Specific activation of PR-10 pathogenesis-related genes in apple by an incompatible race of Venturia inaequalis

Abstract

Apple (Malus x domestica Borkh. cv. Golden Delicious) trees were inoculated with fungal pathogens, corresponding either to an incompatible strain of Venturia inaequalis or to non-host pathogens (Venturia pyrina, Alternaria brassicicola) in order to characterize the regulation of PR-10 genes in these different situations in relationship to symptom development. Macro- and microscopic observations of the plant-fungus interactions revealed typical symptoms of resistance with V. inaequalis and symptoms of hypersensitivity (HR) on around 5 % of leaves with V. pyrina. No HR was microscopically observed with A. brassicicola. In the non-host situations, the PR-10 expression in leaves at the transcriptional level was not (A. brassicicola) or very slightly (V. pyrina) activated. This strongly suggests that PR-10 is not a component of the non-host resistance in the interactions studied here. By contrast specific up-regulation of PR-10 was evident after inoculation with V. inaequalis

Dates and versions

hal-02657458 , version 1 (30-05-2020)

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Michel Chevalier, Luciana L. Parisi, B. Gueye, Claire C. Campion, Philippe Simoneau, et al.. Specific activation of PR-10 pathogenesis-related genes in apple by an incompatible race of Venturia inaequalis. Biologia Plantarum, 2008, 52 (4), pp.718-722. ⟨10.1007/s10535-008-0138-9⟩. ⟨hal-02657458⟩
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