Agritrop
Home

Mate limitation in fungal plant parasites can lead to cyclic epidemics in perennial host populations

Ravigné Virginie, Lemesle Valérie, Walter Alicia, Mailleret Ludovic, Hamelin Frédéric. 2017. Mate limitation in fungal plant parasites can lead to cyclic epidemics in perennial host populations. Bulletin of Mathematical Biology, 79 (3) : pp. 430-447.

Journal article ; Article de revue à facteur d'impact
[img] Version Online first - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
art%3A10.1007%2Fs11538-016-0240-7.pdf

Télécharger (982kB) | Request a copy
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
Ravigne.V.pdf

Télécharger (971kB) | Request a copy

Quartile : Q3, Sujet : BIOLOGY / Quartile : Q3, Sujet : MATHEMATICAL & COMPUTATIONAL BIOLOGY

Abstract : Fungal plant parasites represent a growing concern for biodiversity and food security. Most ascomycete species are capable of producing different types of infectious spores both asexually and sexually. Yet the contributions of both types of spores to epidemiological dynamics have still to been fully researched. Here we studied the effect of mate limitation in parasites which perform both sexual and asexual reproduction in the same host. Since mate limitation implies positive density dependence at low population density, we modeled the dynamics of such species with both density-dependent (sexual) and density-independent (asexual) transmission rates. A first simple SIR model incorporating these two types of transmission from the infected compartment, suggested that combining sexual and asexual spore production can generate persistently cyclic epidemics in a significant part of the parameter space. It was then confirmed that cyclic persistence could occur in realistic situations by parameterizing a more detailed model fitting the biology of the Black Sigatoka disease of banana, for which literature data are available. We discuss the implications of these results for research on and management of Sigatoka diseases of banana. (Résumé d'auteur)

Classification Agris : H20 - Plant diseases

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Agence(s) de financement européenne(s) : European Commission

Auteurs et affiliations

  • Ravigné Virginie, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0002-4252-2574
  • Lemesle Valérie, Collège Carnot (FRA)
  • Walter Alicia, INRA (FRA)
  • Mailleret Ludovic, INRA (FRA)
  • Hamelin Frédéric, INRA (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/583506/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-05-02 ]