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

Functional Plant Biology : FPB
Corinne RobertBertrand Ney

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.

References

May 14, 2003·Comptes rendus biologies·Jean-Marc MeynardPhilippe Lucas
Mar 1, 2002·Molecular Plant Pathology·Claire-Louise Palmer, Wendy Skinner

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Citations

Feb 5, 2013·The New Phytologist·Frédéric BernardMichaël Chelle
May 6, 2019·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Thomas M ChalonerSarah J Gurr
Dec 12, 2012·PloS One·Pierre CasadebaigRobert Faivre
Apr 30, 2017·Phytopathology·Pierre-Antoine PrécigoutCorinne Robert
Aug 31, 2018·Journal of Experimental Botany·Jochem B EversNiels P R Anten
Mar 14, 2012·Journal of Food Protection·Juan M Cevallos-CevallosAriena H C van Bruggen
Jul 8, 2015·Applied and Environmental Microbiology·Frédéric SuffertIvan Sache
Jan 13, 2017·Phytopathology·Alexey MikaberidzeFrank van den Bosch
Dec 10, 2009·Journal of Experimental Botany·J VosP H B de Visser
Mar 25, 2014·PloS One·Peter H F HobbelenFrank van den Bosch

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