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Communication dans un congrès

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

Abstract : 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.
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Communication dans un congrès
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https://hal.inrae.fr/hal-02823551
Déposant : Migration Prodinra <>
Soumis le : samedi 6 juin 2020 - 21:37:09
Dernière modification le : vendredi 9 octobre 2020 - 11:50:03

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Corinne Robert, Christian Fournier, Bruno Andrieu, Bertrand Ney. 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. 5. International Workshop on Functional-Structural Plant Models, Nov 2007, Napier, New Zealand. ⟨10.1071/FP08066⟩. ⟨hal-02823551⟩

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