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Coupling a 3D virtual wheat (Triticum aestivum) plant model with a Septoria tritici epidemic model (Septo3D): a new approach to investigate plant-pathogen interactions linked to canopy architecture.
Robert, Corinne; Fournier, Christian; Andrieu, Bruno; Ney, Bertrand.
Afiliação
  • Robert C; INRA, UMR 1091 EGC, F-78850 Thiverval-Grignon, France.
  • Fournier C; INRA, UMR 759 LEPSE, 2 place Viala, F-34060 Montpellier Cedex 01, France.
  • Andrieu B; INRA, UMR 1091 EGC, F-78850 Thiverval-Grignon, France.
  • Ney B; INRA, UMR 1091 EGC, F-78850 Thiverval-Grignon, France.
Funct Plant Biol ; 35(10): 997-1013, 2008 Dec.
Article em En | MEDLINE | ID: mdl-32688849
This work initiates a modelling approach that allows us to investigate the effects of canopy architecture on foliar epidemics development. It combines a virtual plant model of wheat (Triticum aestivum L.) with an epidemic model of Septoria tritici which is caused by Mycosphaerella graminicola, a hemi-biotrophic, splashed-dispersed fungus. Our model simulates the development of the lesions from the infected lower leaves to the healthy upper leaves in the growing canopy. Epidemics result from the repeated successions of lesion development (during which spores are produced) and spores dispersal. In the model, canopy development influences epidemic development through the amount of tissue available for lesion development and through its effects on rain penetration and droplets interception during spore dispersal. Simulations show that the impact of canopy architecture on epidemic development differs between canopy traits and depends on climate. Phyllochron has the strongest effect, followed by leaf size and stem elongation rate.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2008 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2008 Tipo de documento: Article