1. On synergistic co-infection in crop diseases. The case of the Maize Lethal Necrosis Disease.
- Author
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Chapwanya, M., Matusse, A., and Dumont, Y.
- Subjects
- *
DISEASE vectors , *PLANT diseases , *MIXED infections , *BASIC reproduction number , *CORN , *PLANT viruses - Abstract
• Development and study of a synergistic co-infection model for crops. • Basic and Invasion Reproduction numbers drive the dynamics of the system. • Application to the Maize Lethal Necrosis case. • Among all possible control strategies, early roguing is the best one. 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. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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