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An Individual-Based Spatial Epidemiological Model for the Spread of Plant Diseases

Authors: Martina Cendoya, Ana Navarro-Quiles, Antonio López-Quílez, Antonio Vicent & David Conesa
Date Published: 23/02/2024
Via: Springer

Abstract

In the study of plant disease epidemics, the state of each individual in the population and their spatial location should be considered when modeling disease spread. We present a model to describe the spread of plant diseases, where the infection of a susceptible individual depends on the transmission rate of infected individuals and the spatial correlation. This latter is introduced through the Matérn correlation function, accounting for spatial dependence based on distance. Almond leaf scorch disease, caused by the bacterium Xylella fastidiosa, was used as a case study to test the behavior of the model parameters and the variability due to the characteristics and location of initial disease introduction using a proposed simulation algorithm. The greatest variability in the results depended on the range parameter of the Matérn correlation, i.e., the distance at which two observations can be considered spatially uncorrelated, and the initial introduction. The spatial distribution of individuals also had a strong influence on disease spread, highlighting that areas without trees acted as barriers when their extent was greater than the range parameter. It should be stressed that this individual-based model can be applied to other plant diseases, adapting the parameter values to their particular epidemiological characteristics.

Complete circularized genome resources for Xylella fastidiosa subsp. sandyi strains CO33 and CFBP8478

Authors: María Pilar Velasco-Amo, Luis F. Arias-Giraldo, Miguel Román-Écija, Annalisa Giampetruzzi, Maria Saponari, and Blanca B. Landa

Date: 04/03/24

Xylella fastidiosa (Xf) is a vascular phytopathogenic bacterium native to the Americas, known for causing severe diseases and significant economic losses in important crops. In Europe, Xf is considered a quarantine pathogen. Since its first detection in 2013 in Italy,...

Complete circularized genome resources for Xylella fastidiosa subsp. sandyi strains CO33 and CFBP8478

Authors: María Pilar Velasco-Amo, Luis F. Arias-Giraldo, Miguel Román-Écija, Annalisa Giampetruzzi, Maria Saponari, and Blanca B. Landa

Date: 04/03/24

Xylella fastidiosa (Xf) is a vascular phytopathogenic bacterium native to the Americas, known for causing severe diseases and significant economic losses in important crops. In Europe, Xf is considered a quarantine pathogen. Since its first detection in 2013 in Italy,...

Genealogical tracing of Olea europaea species and pedigree relationships of var. europaea using chloroplast and nuclear markers

Authors: Roberto Mariotti, Angjelina Belaj, Raúl de la Rosa, Rosario Muleo, Marco Cirilli, Ivano Forgione, Maria Cristina Valeri & Soraya Mousavi

Date: 26/09/23

Background Olive is one of the most cultivated species in the Mediterranean Basin and beyond. Despite being extensively studied for its commercial relevance, the origin of cultivated olive and the history of its domestication remain open questions. Here, we present a...