On synergistic co-infection in crop diseases. The case of the Maize Lethal Necrosis Disease
Crops are often subject to intense attacks by pests and diseases. Among them, Maize Lethal Necrosis (MLN) is a serious disease that impact maize crops in many Southern countries. It results from the synergistic interaction of two plant viruses, transmitted by two vectors. In this paper, we develop a general deterministic epidemic model of crop-vector-borne disease for synergistic co-infection, with a particular focus on MLN disease. A theoretical analysis shows that different thresholds exists that drive the dynamics of the system: the well known basic reproduction numbers and also invasion reproduction numbers. The latter are essential for the emergence or not of the MLN disease. After a global sensitivity analysis, we illustrate our results through numerical simulations and discuss potential control methods such as vector control and roguing.
| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | H20 - Maladies des plantes, U10 - Informatique, mathématiques et statistiques, Zea mays, nécrose, maladie des plantes, infection, synergisme, transmission des maladies, modélisation des cultures, modèle mathématique, analyse qualitative, analyse globale, http://aims.fao.org/aos/agrovoc/c_8504, http://aims.fao.org/aos/agrovoc/c_15509, http://aims.fao.org/aos/agrovoc/c_5962, http://aims.fao.org/aos/agrovoc/c_3852, http://aims.fao.org/aos/agrovoc/c_16149, http://aims.fao.org/aos/agrovoc/c_2329, http://aims.fao.org/aos/agrovoc/c_9000024, http://aims.fao.org/aos/agrovoc/c_24199, http://aims.fao.org/aos/agrovoc/c_35284, http://aims.fao.org/aos/agrovoc/c_32804, |
| Online Access: | http://agritrop.cirad.fr/596779/ http://agritrop.cirad.fr/596779/7/596779_MAA.pdf |
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