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Recent research accomplishments on early detection of Xylella fastidiosa outbreaks in the Mediterranean Basin

Authors: María P. Velasco-Amo, Antonio Vicent, Pablo J. Zarco-Tejada, Juan A. Navas-Cortés, Blanca B. Landa
Date Published: 13/01/2023
Via: https://doi.org/10.36253/phyto-14171

Xylella fastidiosa is a major transboundary plant pest, causing severe socioeconomic impacts. Development of preventive strategies and methods for surveillance, early detection, monitoring, and accurate diagnosis of X. fastidiosa and its vectors, are keys to preventing the effects of this plant pathogen, and assist timely eradication or optimisation of containment measures. This review focuses on approaches for early detection of X. fastidiosa in the Mediterranean Basin, including development of climatic suitability risk maps to determine areas of potential establishment, and epidemiological models to assist in outbreak management through optimized surveillance and targeted responses. The usefulness of airborne hyperspectral and thermal images from remote sensing to discriminate X. fastidiosa infections from other biotic- and abiotic-induced spectral signatures is also discussed. The most commonly used methods for identifying X. fastidiosa in infected plants and vectors, and the molecular approaches available to genetically characterize X. fastidiosa strains, are described. Each of these approaches has trade-offs, but stepwise or simultaneous combinations of these methods may help to contain X. fastidiosa epidemics in the Mediterranean Basin.

Parallel host shifts in a bacterial plant pathogen suggest independent genetic solutions

Authors: Monica A. Donegan, Helvécio D. Coletta-Filho, Rodrigo P. P. Almeida

Date: 29/03/23

While there are documented host shifts in many bacterial plant pathogens, the genetic foundation of host shifts is largely unknown. Xylella fastidiosa is a bacterial pathogen found in over 600 host plant species. Two parallel host shifts occurred—in Brazil and...

Complete Circularized Genome Resources of Seven Strains of Xylella fastidiosa subsp. fastidiosa Using Hybrid Assembly Reveals Unknown Plasmids

Authors: María Pilar Velasco-Amo, Luis F. Arias-Giraldo, Miguel Román-Écija, Leonardo De La Fuente, Ester Marco-Noales, Eduardo Moralejo, Juan A. Navas-Cortés, and Blanca B. Landa

Date: 01/08/23

Xylella fastidiosa is a vascular plant pathogenic bacterium native to the Americas that is causing significant epidemics and economic losses in olive and almonds in Europe, where it is a quarantine pathogen. Since its first detection in 2013 in Italy, mandatory...

Induction of Defense Responses and Protection of Almond Plants Against Xylella fastidiosa by Endotherapy with a Bifunctional Peptide

Authors: Luís Moll, Aina Baró, Laura Montesinos, Esther Badosa, Anna Bonaterra, and Emilio Montesinos

Date: 08/08/23

Xylella fastidiosa is a plant pathogenic bacterium that has been introduced in the European Union (EU), causing significant yield losses in economically important Mediterranean crops. Almond leaf scorch (ALS) is currently one of the most relevant diseases observed in...