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Interaction of Botrytis cinerea with the intermediate C3-CAM plant Mesembryanthemum crystallinum

Kuźniak, E ; Kornas, A ; Gabara, B ; Ullrich, C ; Skłodowska, M ; Miszalski, Z

Environmental and Experimental Botany, 2010, Vol.69(2), pp.137-147 [Periódico revisado por pares]

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  • Título:
    Interaction of Botrytis cinerea with the intermediate C3-CAM plant Mesembryanthemum crystallinum
  • Autor: Kuźniak, E ; Kornas, A ; Gabara, B ; Ullrich, C ; Skłodowska, M ; Miszalski, Z
  • Assuntos: Crassulacean Acid Metabolism ; Mesembryanthemum Crystallinum ; Botrytis Cinerea ; Infection ; Photosynthesis ; Hydrogen Peroxide ; Environmental Sciences ; Botany
  • É parte de: Environmental and Experimental Botany, 2010, Vol.69(2), pp.137-147
  • Descrição: The interaction between necrotrophic and , a C3/CAM intermediate plant, was followed macroscopically, microscopically, by analyzing CAM (Crassulacean Acid Metabolism) related and H O accumulation in leaf tissue. In response to infection, in both C3 and CAM states exhibited hypersensitive response (HR)-like defence response or soft-rot spreading lesions depending on the post-inoculation environmental conditions. Our results point out to the fact that light is required for plant resistance, and HR-like necrotic lesions are co-localized with thermal effects visible on the infrared images possibly related to water disturbances, stomatal closure and H O accumulation. In C3 plants, these changes were followed by metabolic shifts towards weak diurnal oscillations of malate content. We suppose that light-dependent processes related to CAM and H O accumulation are in parallel with resistance to . This may explain at least partly why CAM plants could be less sensitive to biotic stress factors.
  • Idioma: Inglês

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