Xylella fastidiosa: A reemerging plant pathogen that threatens crops globally

Castro, Claudia; DiSalvo, Biagio; Roper, M. Caroline

doi:10.1371/journal.ppat.1009813

Cited by 18 publications

(17 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although X. fastidiosa has over 600 known potential host species 40 , we focus here on the X. fastidiosa ST53 – olive system, as found in Apulia, Italy 41 . In this system, the combination of a high spread rate and a long presymptomatic period means that visual inspection is likely to fail to reliably detect invasions at an early stage of invasion (i.e.…”

Section: Discussionmentioning

confidence: 99%

Epidemiologically-based strategies for the detection of emerging plant pathogens

Mastin

Bosch

Bourhis

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Emerging pests and pathogens of plants are a major threat to natural and managed ecosystems worldwide. Whilst it is well accepted that surveillance activities are key to both the early detection of new incursions and the ability to identify pest-free areas, the performance of these activities must be evaluated to ensure they are fit for purpose. This requires consideration of the number of potential hosts inspected or tested as well as the epidemiology of the pathogen and the detection method used. In the case of plant pathogens, one particular concern is whether the visual inspection of plant hosts for signs of disease is able to detect the presence of these pathogens at low prevalences, given that it takes time for these symptoms to develop. One such pathogen is the ST53 strain of the vector-borne bacterial pathogen Xylella fastidiosa in olive hosts, which was first identified in southern Italy in 2013. Additionally, X. fastidiosa ST53 in olive has a rapid rate of spread, which could also have important implications for surveillance. In the current study, we evaluate how well visual surveillance would be expected to perform for this pathogen and investigate whether molecular testing of either tree hosts or insect vectors offer feasible alternatives. Our results identify the main constraints to each of these strategies and can be used to inform and improve both current and future surveillance activities.

show abstract

Section: Discussionmentioning

confidence: 99%

Epidemiologically-based strategies for the detection of emerging plant pathogens

Mastin

Bosch

Bourhis

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…X. fastidiosa is a xylem-limited bacterium that causes a range of economically important plant diseases in hundreds of crops, including grapevine, almonds, and olive trees. It is well known especially in the Americas, where it is an endemic pathogen 4 . OQDS can be revealed by a-specific symptoms such as severe wilting in leaves, twigs, and branches.…”

Section: Introductionmentioning

confidence: 99%

Agro-active endo-therapy treated Xylella fastidiosa subsp. pauca-infected olive trees assessed by the first 1H-NMR-based metabolomic study

Girelli

Hussain

Verweire³

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Xylella fastidiosa is a xylem-limited bacterium causing a range of economically important plant diseases in hundreds of crops. Over the last decade, a severe threat due to Olive Quick Decline Syndrome (OQDS), caused by Xylella fastidiosa subspecies pauca, affected the Salento olive groves (Apulia, South-East Italy). Very few phyto-therapeutics, including a Zn/Cu citric acid biocomplex foliar treatment, were evaluated to mitigate this disease. However, the traditional foliar applications result in the agro-actives reaching only partially their target. Therefore the development of novel endo-therapeutic systems was suggested. Metabolite fingerprinting is a powerful method for monitoring both, disease progression and treatment effects on the plant metabolism, allowing biomarkers detection. We performed, for the first time, short-term monitoring of metabolic pathways reprogramming for infected Ogliarola salentina and Cima di Melfi olive trees after precision intravascular biocomplex delivery using a novel injection system. Upon endo therapy, we observed specific variations in the leaf content of some metabolites. In particular, the 1H NMR-based metabolomics approach showed, after the injection, a significant decrease of both the disease biomarker quinic acid and mannitol with simultaneous increase of polyphenols and oleuropein related compounds in the leaf’s extracts. This combined metabolomics/endo-therapeutic methodology provided useful information in the comprehension of plant physiology for future applications in OQDS control.

show abstract

“…For each of these diseases, X. fastidiosa is transmitted by xylem-feeding insect vectors into the plant host, where it then utilizes cell wall degrading enzymes to systemically colonize the xylem. In the xylem, it forms biofilms that are thought to be integral to pathogenicity ( 16 , 17 ). Colonization is also governed, in part, by virulence and pathogenicity factors that influence a wide range of bacterial functions (e.g., biofilm formation, host cell wall degradation, regulatory systems, stress responses, and bacterial membrane composition), although it is likely that other abiotic factors (such as plant drought stress) also contribute to disease progression ( 13 ).…”

Section: Introductionmentioning

confidence: 99%

Using Genomes and Evolutionary Analyses to Screen for Host-Specificity and Positive Selection in the Plant Pathogen Xylella fastidiosa

Batarseh

Morales‐Cruz

Ingel

et al. 2022

Appl Environ Microbiol

Self Cite

View full text Add to dashboard Cite

show abstract

Xylella fastidiosa: A reemerging plant pathogen that threatens crops globally

Cited by 18 publications

References 27 publications

Epidemiologically-based strategies for the detection of emerging plant pathogens

Epidemiologically-based strategies for the detection of emerging plant pathogens

Agro-active endo-therapy treated Xylella fastidiosa subsp. pauca-infected olive trees assessed by the first 1H-NMR-based metabolomic study

Using Genomes and Evolutionary Analyses to Screen for Host-Specificity and Positive Selection in the Plant Pathogen Xylella fastidiosa

Contact Info

Product

Resources

About