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Variation and selection of quantitative traits in plant pathogens

Abstract : The first section presents the quantitative traits of pathogenicity that are most commonly measured by plant pathologists, how the expression of those traits is influenced by environmental factors, and why the traits must be taken into account for understanding pathogen evolution in agricultural systems. Particular attention is given to the shared genetic control of these traits by the host and the pathogen. Next, the review discusses how quantitative traits account for epidemic development and how they can be related to pathogen fitness. The main constraints that influence the evolution of quantitative traits in pathogen populations are detailed. Finally, possible directions for research on the management of pathogen virulence (as defined by evolutionists) and host quantitative resistance are presented. The review evaluates how the theoretical corpus developed by epidemiologists and evolutionists may apply to plant pathogens in the context of agriculture. The review also analyzes theoretical papers and compares the modeling hypotheses to the biological characteristics of plant pathogens.
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Submitted on : Monday, July 7, 2014 - 2:21:13 PM
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Christian Lannou. Variation and selection of quantitative traits in plant pathogens. Annual Review of Phytopathology, Annual Reviews, 2012, 50, pp.319-338. ⟨10.1146/annurev-phyto-081211-173031⟩. ⟨hal-01019819⟩



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