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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

Abstract

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.

A high-throughput analysis of high-resolution X-ray CT images of stems of olive and citrus plants resistant and susceptible to Xylella fastidiosa

Authors: Nancy C. Walker, Siul A. Ruiz, Talita R. Ferreira, Helvecio D. Coletta-Filho, James Le Houx, Daniel McKay Fletcher, Steven M. White, Tiina Roose

Date: 27/11/23

The bacterial plant pathogen Xylella fastidiosa causes disease in several globally important crops. However, some cultivars harbour reduced bacterial loads and express few symptoms. Evidence considering plant species in isolation suggests xylem structure influences...

Bioecological traits of spittlebugs and their implications on the epidemiology and control of Xylella fastidiosa epidemic in Apulia

Authors: Nicola Bodino, Vincenzo Cavalieri, Crescenza Dongiovanni, Maria Saponari, Domenico Bosco

Date: 03/11/23

Spatial-temporal dynamics of spittlebug populations, together with transmission biology, are of major importance to outline the disease epidemiology of Xylella fastidiosa subsp. pauca in Apulian olive groves. The spread rate of X. fastidiosa is mainly influenced by...

Direct and indirect effects of two endophytic entomopathogenic fungi on survival and feeding behaviour of meadow spittlebug Philaenus spumarius

Authors: Meelad Yousef-Yousef, Marina Morente, Natalia González-Mas, Alberto Fereres, Enrique Quesada-Moraga, Aranzazu Moreno

Date: 01/11/23

Highlights: Direct exposure of Philaenus to Metarhizium brunneum reduces its survivorship. M. brunneum successfully colonises the host plant and reduces survival of Philaenus. Philaenus reaches the xylem faster on M. brunneum-colonised plants. Xylem sap ingestion by...