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Artykuły w czasopismach na temat „Xylella fastidiosa subsp. pauca”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Coletta-Filho, Helvécio D., Carolina S. Francisco, João R. S. Lopes, Christiane Muller, and Rodrigo P. P. Almeida. "Homologous Recombination and Xylella fastidiosa Host–Pathogen Associations in South America." Phytopathology® 107, no. 3 (2017): 305–12. http://dx.doi.org/10.1094/phyto-09-16-0321-r.

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Homologous recombination affects the evolution of bacteria such as Xylella fastidiosa, a naturally competent plant pathogen that requires insect vectors for dispersal. This bacterial species is taxonomically divided into subspecies, with phylogenetic clusters within subspecies that are host specific. One subspecies, pauca, is primarily limited to South America, with the exception of recently reported strains in Europe and Costa Rica. Despite the economic importance of X. fastidiosa subsp. pauca in South America, little is known about its genetic diversity. Multilocus sequence typing (MLST) has

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Safady, Nágela Gomes, João R. S. Lopes, Carolina S. Francisco, and Helvécio Della Coletta-Filho. "Distribution and Genetic Diversity of Xylella fastidiosa subsp. pauca Associated with Olive Quick Syndrome Symptoms in Southeastern Brazil." Phytopathology® 109, no. 2 (2019): 257–64. http://dx.doi.org/10.1094/phyto-07-18-0273-fi.

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In Brazil, the host expansion of Xylella fastidiosa subsp. pauca was recently demonstrated with the report of diseased olive trees (Olea europaea), whose symptoms were associated with olive quick decline syndrome previously described in southern Italy. We employed both polymerase chain reaction-based techniques and culture medium isolation to investigate the geographic distribution of X. fastidiosa as well as the genetic signatures of 21 strains isolated from 11 olive orchards in both São Paulo and Minas Gerais States in Brazil. X. fastidiosa subsp. pauca was detected in 83% of the orchards ex

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Pierry, Paulo Marques, Wesley Oliveira de Santana, João Paulo Kitajima, et al. "High-Quality Draft Genome Sequence Resources of Eight Xylella fastidiosa Strains Isolated from Citrus, Coffee, Plum, and Hibiscus in South America." Phytopathology® 110, no. 11 (2020): 1751–55. http://dx.doi.org/10.1094/phyto-05-20-0162-a.

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Xylella fastidiosa subsp. pauca, once confined to South America and infecting mainly citrus and coffee plants, has been found to be associated with other hosts and in other geographic regions. We present high-quality draft genome sequences of X. fastidiosa subsp. pauca strains J1a12, B111, U24D, and XRB isolated from citrus plants in Brazil, strain Fb7 isolated from a citrus plant in Argentina and strains 3124, Pr8x, and Hib4 isolated, respectively, from coffee, plum, and hibiscus plants in Brazil. Sequencing was performed using Roche 454-GS FLX, MiSeq-Illumina or Pacific Biosciences platforms

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Giampetruzzi, Annalisa, Maria Saponari, Giuliana Loconsole, et al. "Genome-Wide Analysis Provides Evidence on the Genetic Relatedness of the Emergent Xylella fastidiosa Genotype in Italy to Isolates from Central America." Phytopathology® 107, no. 7 (2017): 816–27. http://dx.doi.org/10.1094/phyto-12-16-0420-r.

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Xylella fastidiosa is a plant-pathogenic bacterium recently introduced in Europe that is causing decline in olive trees in the South of Italy. Genetic studies have consistently shown that the bacterial genotype recovered from infected olive trees belongs to the sequence type ST53 within subspecies pauca. This genotype, ST53, has also been reported to occur in Costa Rica. The ancestry of ST53 was recently clarified, showing it contains alleles that are monophyletic with those of subsp. pauca in South America. To more robustly determine the phylogenetic placement of ST53 within X. fastidiosa, we

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Randall, Jennifer J., Natalie P. Goldberg, John D. Kemp, et al. "Genetic Analysis of a Novel Xylella fastidiosa Subspecies Found in the Southwestern United States." Applied and Environmental Microbiology 75, no. 17 (2009): 5631–38. http://dx.doi.org/10.1128/aem.00609-09.

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ABSTRACT Xylella fastidiosa, the causal agent of several scorch diseases, is associated with leaf scorch symptoms in Chitalpa tashkentensis, a common ornamental landscape plant used throughout the southwestern United States. For a number of years, many chitalpa trees in southern New Mexico and Arizona exhibited leaf scorch symptoms, and the results from a regional survey show that chitalpa trees from New Mexico, Arizona, and California are frequently infected with X. fastidiosa. Phylogenetic analysis of multiple loci was used to compare the X. fastidiosa infecting chitalpa strains from New Mex

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Schaad, Norman W., Elena Postnikova, George Lacy, M'Barek Fatmi, and Chung-Jan Chang. "Xylella fastidiosa subspecies: X. fastidiosa subsp piercei, subsp. nov., X. fastidiosa subsp. multiplex subsp. nov., and X. fastidiosa subsp. pauca subsp. nov." Systematic and Applied Microbiology 27, no. 3 (2004): 290–300. http://dx.doi.org/10.1078/0723-2020-00263.

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Schaad, Norman W., Elena Postnikova, George Lacy, M'Barek Fatmi, and Chung-Jan Chang. "Xylella fastidiosa subspecies: X. fastidiosa subsp piercei, subsp. nov., X. fastidiosa subsp. multiplex subsp. nov., and X. fastidiosa subsp. pauca subsp. nov." Systematic and Applied Microbiology 27, no. 6 (2004): 763. http://dx.doi.org/10.1078/0723202042369848.

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Arias-Giraldo, Luis F., Annalisa Giampetruzzi, Madis Metsis, et al. "Complete Circularized Genome Data of Two Spanish strains of Xylella fastidiosa (IVIA5235 and IVIA5901) Using Hybrid Assembly Approaches." Phytopathology® 110, no. 5 (2020): 969–72. http://dx.doi.org/10.1094/phyto-01-20-0012-a.

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Xylella fastidiosa is an economically important plant pathogenic bacterium of global importance associated, since 2013, with a devastating epidemic in olive trees in Italy. Since then, several outbreaks of this pathogen have been reported in other European member countries including Spain, France, and Portugal. In Spain, the three major subspecies (subsp. fastidiosa, multiplex, and pauca) of the bacterium have been detected in the Balearic Islands, but only subspecies multiplex in the mainland (Alicante). We present the first complete genome sequences of two Spanish strains: X. fastidiosa subs

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Baldassarre, Francesca, Giuseppe Tatulli, Viviana Vergaro, et al. "Sonication-Assisted Production of Fosetyl-Al Nanocrystals: Investigation of Human Toxicity and In Vitro Antibacterial Efficacy against Xylella fastidiosa." Nanomaterials 10, no. 6 (2020): 1174. http://dx.doi.org/10.3390/nano10061174.

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Recently, there is a growing demand in sustainable phytopathogens control research. Nanotechnology provides several tools such as new pesticides formulations, antibacterial nanomaterials and smart delivery systems. Metal nano-oxides and different biopolymers have been exploited in order to develop nanopesticides which can offer a targeted solution minimizing side effects on environment and human health. This work proposed a nanotechnological approach to obtain a new formulation of systemic fungicide fosetyl-Al employing ultrasonication assisted production of water dispersible nanocrystals. Mor

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Bossi Esteves, Mariana, Julia Lopes Nalin, Karla Kudlawiec, et al. "XadA2 Adhesin Decreases Biofilm Formation and Transmission of Xylella fastidiosa subsp. pauca." Insects 11, no. 8 (2020): 473. http://dx.doi.org/10.3390/insects11080473.

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Xylella fastidiosa is a vector-borne bacterium that causes diseases in many plants of economic interest. The bacterium–vector initial interactions involve bacterial membrane-bound adhesins that mediate cell attachment to the foregut of insect vectors. We investigated the role of the afimbrial adhesin XadA2 in the binding and biofilm formation of X. fastidiosa subsp. pauca to vector surfaces in vitro, as well as its potential to disrupt pathogen transmission. We showed that XadA2 has binding affinity for polysaccharides on sharpshooter hindwings, used as a proxy for the interactions between X.

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MORALEJO, Eduardo, Bàrbara QUETGLAS, Marina MONTESINOS, et al. "Outbreak of Xylella fastidiosa subsp. pauca ST53 affecting wild and cultivated olive trees on the island of Mallorca, Spain." Phytopathologia Mediterranea 63, no. 3 (2024): 475–80. https://doi.org/10.36253/phyto-15891.

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The Balearic Islands have emerged as a hotspot for the invasive plant pathogen Xylella fastidiosa (Xf). Since 2016, the Xf subsp. fastidiosa and multiplex have been detected causing almond leaf scorch and Pierce’s disease on the island of Mallorca, Spain, and a new sequence type (ST), ST80, of subsp. pauca is infecting wild and cultivated olive trees on the island of Ibiza. In addition, Xf subsp. multiplex ST81 is widespread in scrublands, and causes mild, sub-lethal dieback of wild olive trees in Menorca and Mallorca. A new outbreak is here reported of the Xf subsp. pauca in the municipality

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Esteves, Mariana B., Heloisa T. Kleina, Tiago de Melo Sales, et al. "Transmission Efficiency of Xylella fastidiosa subsp. pauca Sequence Types by Sharpshooter Vectors after In Vitro Acquisition." Phytopathology® 109, no. 2 (2019): 286–93. http://dx.doi.org/10.1094/phyto-07-18-0254-fi.

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Xylella fastidiosa subsp. pauca is genetically diverse and has many vector species. However, there is limited information on vector specificity and efficiency for different sequence types (STs) within the pathogen subspecies. Both STs of X. fastidiosa and vectors differ in their associations with plants; therefore, assessment of vector competence should include the standardized vector acquisition ability of bacteria from artificial diets. This work aimed to adapt and validate an in vitro acquisition system for strains of X. fastidiosa that cause citrus variegated chlorosis, and to compare the

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Picciotti, Ugo, Nada Lahbib, Valdete Sefa, Francesco Porcelli, and Francesca Garganese. "Aphrophoridae Role in Xylella fastidiosa subsp. pauca ST53 Invasion in Southern Italy." Pathogens 10, no. 8 (2021): 1035. http://dx.doi.org/10.3390/pathogens10081035.

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The Philaenus spumarius L. (Hemiptera Aphrophoridae) is a xylem-sap feeder vector that acquires Xylella fastidiosa subsp. pauca ST53 during feeding on infected plants. The bacterium is the plant pathogen responsible for olive quick decline syndrome that has decimated olive trees in Southern Italy. Damage originates mainly from the insect vector attitude that multiplies the pathogen potentialities propagating Xf in time and space. The principal action to manage insect-borne pathogens and to contain the disease spread consists in vector and transmission control. The analysis of an innovative and

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Pereira, W. E. L., C. B. Ferreira, R. Caserta, M. Melotto, and A. A. de Souza. "Xylella fastidiosa subsp. pauca and fastidiosa Colonize Arabidopsis Systemically and Induce Anthocyanin Accumulation in Infected Leaves." Phytopathology® 109, no. 2 (2019): 225–32. http://dx.doi.org/10.1094/phyto-05-18-0155-fi.

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The bacterium Xylella fastidiosa is a multihost pathogen that affects perennial crops such as grapevine, sweet orange, and olive tree worldwide. It is inherently difficult to study these pathosystems owing to the long-term growth habit of the host plant. Thus, the availability of model plants becomes essential to accelerate discoveries with economic impact. In this study, we uncovered evidence that the model plant Arabidopsis thaliana can be colonized by two different X. fastidiosa subspecies, pauca and fastidiosa. We observed that these bacteria are able to move away from the inoculation poin

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Scortichini, Marco, Stefania Loreti, Nicoletta Pucci, et al. "Progress towards Sustainable Control of Xylella fastidiosa subsp. pauca in Olive Groves of Salento (Apulia, Italy)." Pathogens 10, no. 6 (2021): 668. http://dx.doi.org/10.3390/pathogens10060668.

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Xylella fastidiosa subsp. pauca is the causal agent of “olive quick decline syndrome” in Salento (Apulia, Italy). On April 2015, we started interdisciplinary studies to provide a sustainable control strategy for this pathogen that threatens the multi-millennial olive agroecosystem of Salento. Confocal laser scanning microscopy and fluorescence quantification showed that a zinc-copper-citric acid biocomplex—Dentamet®—reached the olive xylem tissue either after the spraying of the canopy or injection into the trunk, demonstrating its effective systemicity. The biocomplex showed in vitro bacteric

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Greco, Davide, Erika Sabella, Giambattista Carluccio, Angelo Giovanni Delle Donne, Luigi De Bellis, and Andrea Luvisi. "Xylella fastidiosa, Possible New Threat to Chestnut (Castanea sativa Mill.) in Italy." Horticulturae 9, no. 12 (2023): 1315. http://dx.doi.org/10.3390/horticulturae9121315.

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This is the first worldwide report of X. fastidiosa (Xf) subsp. pauca on Castanea sativa and the first characterization of Xf infection on this species. Plants located in three sites (in a long-term affected area in Apulia) were monitored for symptoms and bacterial concentrations in spring and summer, while microscopic analyses were performed to evaluate the pathogen distribution in the xylem vessels. All chestnut plants appeared asymptomatic but the Xf subsp. pauca strain “De Donno” was present at low concentrations (1.14 × 104 and 1.56 × 103 cfu mL−1 in April and June) and with a low inciden

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Ali, Beshir M., Wopke van der Werf, and Alfons Oude Lansink. "Assessment of the environmental impacts of Xylella fastidiosa subsp. pauca in Puglia." Crop Protection 142 (April 2021): 105519. http://dx.doi.org/10.1016/j.cropro.2020.105519.

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Scortichini, Marco. "Predisposing Factors for “Olive Quick Decline Syndrome” in Salento (Apulia, Italy)." Agronomy 10, no. 9 (2020): 1445. http://dx.doi.org/10.3390/agronomy10091445.

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Recently, a new severe disease has been reported in the Salento area (Apulia region, southern Italy) in the multimillennial olive agro-ecosystem, given the common name “olive quick decline syndrome” (OQDS). Together with Xylella fastidiosa subsp. pauca, some pathogenic fungi such as Phaeoacremonium spp. have been found associated with the disease. The main predisposing factors to the disease seem to be local cultivar susceptibility, depletion of some micronutrients in the soil that could be related to some agronomical practices favoring the depletion of soil fertility, an incorrect pruning cyc

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Martinati, Juliana Camargo, Paulo Teixeira Lacava, Sandra Kazue Shishido Miyasawa, Sylvia Dias Guzzo, João Lúcio Azevedo, and Siu Mui Tsai. "Redução dos sintomas causados pela Xylella fastidiosa subsp. pauca por meio de aplicação de benzotiadiazole e silício." Pesquisa Agropecuária Brasileira 42, no. 8 (2007): 1083–89. http://dx.doi.org/10.1590/s0100-204x2007000800004.

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O objetivo deste trabalho foi avaliar o efeito da aplicação do benzotiadiazole (BTH) e do silício sobre o controle da doença causada pela Xylella fastidiosa subsp. pauca em Nicotiana tabacum. Os experimentos foram conduzidos em condições de casa de vegetação, onde as plantas de N. tabacum receberam inoculação de X. fastidiosa (linhagem 9a5c) com 4,7x10(7) UFC mL-1. Os tratamentos consistiram da pulverização das folhas, com soluções de BTH (0,6 e 1,2 mM), e aplicação ao solo de soluções de metassilicato de sódio (2 e 4 µM de Si). Cinco plantas foram utilizadas, por tratamento. Plantas de N. tab

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Potere, Oriana, Leonardo Susca, Francesco Civita, et al. "SURVEY FOR THE PRESENCE OF XYLELLA FASTIDIOSA subsp. PAUCA STRAIN CoDiRO IN THE NATIVE FLORA OF THE SALENTO PENINSULA." Journal of Plant Pathology Vol 98 (4sup), 2016 (December 1, 2016): 59. https://doi.org/10.4454/jpp.v98i4sup.3779.

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<em>Xylella fastidiosa </em>subsp. <em>pauca </em>strain CoDiRO was identified as associated with the “Olive Quick Decline Syndrome”, a devastating disease first observed in October 2013 in the southeastern Apulia. At least 350 plant species belonging to 75 families are reported as hosts of <em>X. fastidiosa. </em>These provide a source of inoculum for the vectors (xylem sap-feeding leafhoppers), thus playing a major epidemiological role and facilitating the entrenchment of the pathogen in the affected area. To investigate the CoDiRO strain host range in Salento, monthly samplings of the nativ

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Potere, Oriana, Leonardo Susca, Francesco Civita, et al. "SURVEY FOR THE PRESENCE OF XYLELLA FASTIDIOSA subsp. PAUCA STRAIN CoDiRO IN THE NATIVE FLORA OF THE SALENTO PENINSULA." Journal of Plant Pathology 98 (4sup) (December 1, 2016): 59. https://doi.org/10.4454/jpp.98i4sup.3779.

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<em>Xylella fastidiosa </em>subsp. <em>pauca </em>strain CoDiRO was identified as associated with the “Olive Quick Decline Syndrome”, a devastating disease first observed in October 2013 in the southeastern Apulia. At least 350 plant species belonging to 75 families are reported as hosts of <em>X. fastidiosa. </em>These provide a source of inoculum for the vectors (xylem sap-feeding leafhoppers), thus playing a major epidemiological role and facilitating the entrenchment of the pathogen in the affected area. To investigate the CoDiRO strain host range in Salento, monthly samplings of the nativ

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Caserta, R., R. R. Souza-Neto, M. A. Takita, S. E. Lindow, and A. A. De Souza. "Ectopic Expression of Xylella fastidiosa rpfF Conferring Production of Diffusible Signal Factor in Transgenic Tobacco and Citrus Alters Pathogen Behavior and Reduces Disease Severity." Molecular Plant-Microbe Interactions® 30, no. 11 (2017): 866–75. http://dx.doi.org/10.1094/mpmi-07-17-0167-r.

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The pathogenicity of Xylella fastidiosa is associated with its ability to colonize the xylem of host plants. Expression of genes contributing to xylem colonization are suppressed, while those necessary for insect vector acquisition are increased with increasing concentrations of diffusible signal factor (DSF), whose production is dependent on RpfF. We previously demonstrated that transgenic citrus plants ectopically expressing rpfF from a citrus strain of X. fastidiosa subsp. pauca exhibited less susceptibility to Xanthomonas citri subsp. citri, another pathogen whose virulence is modulated by

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Cendoya, Martina, Joaquín Martínez-Minaya, Vicente Dalmau, et al. "Spatial Bayesian Modeling Applied to the Surveys of Xylella fastidiosa in Alicante (Spain) and Apulia (Italy)." Frontiers in Plant Science 11 (August 14, 2020): 1204. https://doi.org/10.3389/fpls.2020.01204.

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The plant-pathogenic bacterium <em>Xylella fastidiosa</em> was first reported in Europe in 2013, in the province of Lecce, Italy, where extensive areas were affected by the olive quick decline syndrome, caused by the subsp. <em>pauca</em>. In Alicante, Spain, almond leaf scorch, caused by <em>X. fastidiosa</em> subsp. <em>multiplex</em>, was detected in 2017. The effects of climatic and spatial factors on the geographic distribution of <em>X. fastidiosa</em> in these two infested regions in Europe were studied. The presence/absence data of <em>X. fa

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Girelli, Angilè, Del Coco, et al. "1H-NMR Metabolite Fingerprinting Analysis Reveals a Disease Biomarker and a Field Treatment Response in Xylella fastidiosa subsp. pauca-Infected Olive Trees." Plants 8, no. 5 (2019): 115. http://dx.doi.org/10.3390/plants8050115.

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Xylella fastidiosa subsp. pauca is a xylem-limited bacterial phytopathogen currently found associated on many hectares with the “olive quick decline syndrome” in the Apulia region (Southern Italy), and the cultivars Ogliarola salentina and Cellina di Nardò result in being particularly sensitive to the disease. In order to find compounds showing the capability of reducing the population cell density of the pathogen within the leaves, we tested, in some olive orchards naturally-infected by the bacterium, a zinc-copper-citric acid biocomplex, namely Dentamet®, by spraying it to the crown, once pe

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Lombardo, Luca, Pierluigi Rizzo, Carmine Novellis, and Veronica Vizzarri. "Preliminary Molecular Survey of the Possible Presence of Xylella fastidiosa in the Upper Ionian Coasts of Calabria, Italy, through the Capture and Analysis of Its Main Vector Insects." Insects 12, no. 5 (2021): 446. http://dx.doi.org/10.3390/insects12050446.

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Xylella fastidiosa subsp. pauca, strain CoDiRO is the bacterium responsible for the onset of the disease known as the olive quick decline syndrome, which has been causing a phytosanitary and economic emergency in the Apulia region since 2013. To date, three insect species have been identified as pathogenic carriers of X. fastidiosa. With the advancement of the infection front, and the possibility of pathogenic insects being “hitchhiked” over long distances, the monitoring of the vectors of X. fastidiosa in the Italian regions bordering Apulia is an increasingly contingent issue for the rapid c

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Lacava, Paulo Teixeira, Maria Estela Silva-Stenico, Welington Luiz Araújo, et al. "Detection of siderophores in endophytic bacteria Methylobacterium spp. associated with Xylella fastidiosa subsp. pauca." Pesquisa Agropecuária Brasileira 43, no. 4 (2008): 521–28. http://dx.doi.org/10.1590/s0100-204x2008000400011.

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The objective of this work was to study the production of siderophores by endophytic bacteria Methylobacterium spp., which occupy the same ecological niche as Xylella fastidiosa subsp. pauca (Xfp) in citrus plants. The siderophore production of Methylobacterium strains was tested according to chromeazurol agar assay test (CAS), Csáky test (hydroxamate-type) and Arnow test (catechol-type). In addition, the ability of Xfp to use siderophores, in vitro, produced by endophytic bacteria as source of iron, was evaluated. All 37 strains of Methylobacterium spp. tested were CAS-positive for siderophor

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Maria, Saponari, D'attoma Giusy, Montes Borrego Miguel, De La Fuente Leonardo, Loconsole Giuliana, and Beatriz Landa Blanca. "RAPID SCREENING TESTS FOR DIFFERENTIATING XYLELLA FASTIDIOSA ISOLATES." Journal of Plant Pathology (2016) 98 (Supplement) (December 1, 2016): S27. https://doi.org/10.5281/zenodo.268883.

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The bacterial pathogen Xylella fastidiosa (Xf) is characterized by a wide plant host range and insect vectors, and on the basis of phylogenetic studies it was subdivided into different subspecies. Results from strain typing, phylogenetic analyses, and other data comparisons have shown that phylogenetic clusters exhibit hostbased genetic relationships. Until now, different molecular tests can be used for the differentiation of Xf isolates, among which MLST/ MLSA represents the most common method to determine classification and phylogenetic placement of novel isolates. Xf outbreaks in EU motivat

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Del Coco, Laura, Danilo Migoni, Chiara Roberta Girelli, Federica Angilè, Marco Scortichini, and Francesco Paolo Fanizzi. "Soil and Leaf Ionome Heterogeneity in Xylella fastidiosa Subsp. Pauca-Infected, Non-Infected and Treated Olive Groves in Apulia, Italy." Plants 9, no. 6 (2020): 760. http://dx.doi.org/10.3390/plants9060760.

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Xylella fastidiosa subsp. pauca is responsible for the “olive quick decline syndrome” (OQDS) in Salento (Apulia). The main epidemiological aspects of the syndrome are related to the pathogen spread and survival in the area, and to the biology of the insect vector. The assessment of the macro and microelements content (i.e., ionome) in soil and leaves could provide basic and useful information. Indeed, knowledge of host ionomic composition and the possibility of its modification could represent a potential tool for the management of diseases caused by X. fastidiosa. Therefore, soil and leaf ion

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Savoia, Michele Antonio, Valentina Fanelli, Monica Marilena Miazzi, et al. "Apulian Autochthonous Olive Germplasm: A Promising Resource to Restore Cultivation in Xylella fastidiosa-Infected Areas." Agriculture 13, no. 9 (2023): 1746. http://dx.doi.org/10.3390/agriculture13091746.

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The olive tree (Olea europaea subsp. europaea var. europaea) represents the cornerstone crop of Apulian agriculture, which is based on the production of oil and table olives. The high genetic variability of the Apulian olive germplasm is at risk of genetic erosion due to social, economic, and climatic changes. Furthermore, since 2013, the spread of the Gram-negative bacterium Xylella fastidiosa subsp. pauca responsible for the olive quick decline syndrome (OQDS) has been threatening olive biodiversity in Apulia, damaging the regional economy and landscape heritage. The aim of this study was to

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Picciotti, Ugo, Angela D'Accolti, Angela Schiavarelli, et al. "Tradizione e innovazione nel controllo del Philaenus spumarius." Fruit Journal rivista di frutticoltura mediterranea 2, no. 1 (2019): 21–22. https://doi.org/10.5281/zenodo.2613954.

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<em>Philaenus spumarius</em> (Hemiptera Aphrophoridae, Sputacchina maggiore o dei prati) non e (quasi) mai stato considerato un fitofago dannoso in Europa fino alle evidenze della sua capacita di trasmettere <em>Xylella fastidiosa</em> subsp. <em>pauca</em>, responsabile del Complesso del Disseccament Rapido dell’Olivo (CoDiRO). La gravita della malattia inflitta da <em>X. fastidiosa</em> agli olivi ed altre piante legnose, ci obbliga oggi a controllare le popolazioni dell’insetto, che può essere consideratoil nuovo fitofago chiave dell’olivicoltura. Il controllo razio

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De Pascali, Mariarosaria, Davide Greco, Marzia Vergine, Giambattista Carluccio, Luigi De Bellis, and Andrea Luvisi. "A Physiological and Molecular Focus on the Resistance of “Filippo Ceo” Almond Tree to Xylella fastidiosa." Plants 13, no. 5 (2024): 576. http://dx.doi.org/10.3390/plants13050576.

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The impact of Xylella fastidiosa (Xf) subsp. pauca on the environment and economy of Southern Italy has been devastating. To restore the landscape and support the local economy, introducing new crops is crucial for restoring destroyed olive groves, and the almond tree (Prunus dulcis Mill. D. A. Webb) could be a promising candidate. This work focused on the resistance of the cultivar “Filippo Ceo” to Xf and evaluated its physiological and molecular responses to individual stresses (drought or pathogen stress) and combined stress factors under field conditions over three seasons. Filippo Ceo sho

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de Souza, Jessica Brito, Hebréia Oliveira Almeida-Souza, Paulo Adriano Zaini, et al. "Xylella fastidiosa subsp. pauca Strains Fb7 and 9a5c from Citrus Display Differential Behavior, Secretome, and Plant Virulence." International Journal of Molecular Sciences 21, no. 18 (2020): 6769. http://dx.doi.org/10.3390/ijms21186769.

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Xylella fastidiosa colonizes the xylem of various cultivated and native plants worldwide. Citrus production in Brazil has been seriously affected, and major commercial varieties remain susceptible to Citrus Variegated Chlorosis (CVC). Collective cellular behaviors such as biofilm formation influence virulence and insect transmission of X. fastidiosa. The reference strain 9a5c produces a robust biofilm compared to Fb7 that remains mostly planktonic, and both were isolated from symptomatic citrus trees. This work deepens our understanding of these distinct behaviors at the molecular level, by co

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Abou Kubaa, Raied, Annalisa Giampetruzzi, Giuseppe Altamura, Maria Saponari, and Pasquale Saldarelli. "Infections of the Xylella fastidiosa subsp. pauca Strain “De Donno” in Alfalfa (Medicago sativa) Elicits an Overactive Immune Response." Plants 8, no. 9 (2019): 335. http://dx.doi.org/10.3390/plants8090335.

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Diseases caused by Xylella fastidiosa are among the most destructive for several agricultural productions. A deadly disease of olive, termed olive quick decline syndrome, is one of the most recent examples of the severe impacts caused by the introduction and spread of this bacterium in new ecosystems with favorable epidemiological conditions. Deciphering the cascade of events leading to the development of severe alterations in the susceptible host plants is a priority of several research programs investigating strategies to mitigate the detrimental impacts of the infections. However, in the ca

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Belmonte, Antonella, Giovanni Gadaleta, and Annamaria Castrignanò. "Use of Geostatistics for Multi-Scale Spatial Modeling of Xylella Fastidiosa subsp. pauca (Xfp) Infection with Unmanned Aerial Vehicle Image." Remote Sensing 15, no. 3 (2023): 656. http://dx.doi.org/10.3390/rs15030656.

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In recent years, the use of Unmanned Aerial Vehicles (UAVs) has been spreading widely, as in plant pest control. The collection of huge amounts of spatial data raises various issues including that of scale. Data from UAVs generally explore multiple scales, so the problem arises in determining which one(s) may be relevant for a given application. The objective of this work was to investigate the potential of UAV images in the fight against the Xylella pest for olive trees. The data were a multiband UAV image collected on one date in an olive grove affected by Xylella. A multivariate geostatisti

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Bruno, Giovanni Luigi. "Coexistence between Xylella fastidiosa Subsp. pauca and Susceptible Olive Plants in the Salento Peninsula (Southern Italy)." Agronomy 14, no. 9 (2024): 2119. http://dx.doi.org/10.3390/agronomy14092119.

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Olive Quick Decline Syndrome (OQDS) associated with Xylella fastidiosa subsp. pauca is one of the most destructive diseases of olive trees in the Salento Peninsula (Southern Italy), particularly on the cultivars Cellina di Nardò and Ogliarola Salentina. This study proposes the NuovOlivo protocol as a management strategy to permit coexistence between X. fastidiosa subsp. pauca and olive drupes and extra-virgin oil production. Thirty-two private olive orchards affected by OQDS and cultivated following the standard agronomic techniques in use in the area were surveyed during the 2019–2023 olive-g

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Frangipane, Maria Teresa, Lara Costantini, Stefania Garzoli, Nicolò Merendino, and Riccardo Massantini. "Exploring the Sensory and Volatile Profiles Associated with the Antioxidant Activity of Monovarietal Extra Virgin Olive Oil of the Leccio Del Corno Cultivar with Remarkable Resistance to the Bacterium Xylella fastidiosa." Agriculture 15, no. 6 (2025): 619. https://doi.org/10.3390/agriculture15060619.

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In recent decades, the production of extra virgin olive oil has doubled, with a high export value. In Italy, the large number of olive varieties, with around 500 registered, allows the production of highly valued monovarietal oils with a significant impact on sensory profiles. Due to its excellent adaptation to the cold and its remarkable resistance to the bacterial pathogen Xylella fastidiosa (subsp. pauca), the sensory and volatile profiles of the Leccio del Corno monovarietal oil were investigated in relation to quality and antioxidant activity. Our study has revealed that Leccio del Corno

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Yuan, Qing, Ramon Jordan, Ronald H. Brlansky, Olga Istomina, and John Hartung. "Development of single chain variable fragment (scFv) antibodies against Xylella fastidiosa subsp. pauca by phage display." Journal of Microbiological Methods 117 (October 2015): 148–54. http://dx.doi.org/10.1016/j.mimet.2015.07.020.

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Giampetruzzi, Annalisa, Massimiliano Morelli, Maria Saponari, et al. "TRANSCRIPTOME ANALYSIS OF TWO OLIVE CULTIVARS IN RESPONSE TO XYLELLA FASTIDIOSA INFECTION." Journal of Plant Pathology 98, no. 4 (Supplement) (2016): S21. https://doi.org/10.4454/jpp.v98i4sup.3778.

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The CoDiRO strain of Xylella fastidiosa subsp. pauca (Xfp) is ravaging olive (Olea europaea) groves in southern Italy, causing a destructive disease denoted Olive Quick Decline Syndrome (OQDS). Field observations show that the Xfp-infected plants of the cv. Ogliarola salentina develop more severe symptoms than that of cv. Leccino. A global transcriptome profiling comparing the two olive cultivars, infected or not by Xfp, was performed to ascertain whether a tolerant condition of cv. Leccino exists, which could be exploited for lessening the economic impact of the disease on the local olive ind

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Carlucci, Mariangela, Michele Antonio Savoia, Pompea Gabriella Lucchese, et al. "Behavior of Olive Genotypes Against Quick Decline Syndrome (QDS) Caused by Xylella fastidiosa subsp. pauca in Apulia." Plants 14, no. 2 (2025): 157. https://doi.org/10.3390/plants14020157.

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Xylella fastidiosa subsp. pauca (Xfp), a quarantine pathogen in the European Union, severely threatens Mediterranean olive production, especially in southern Italy, where Olive Quick Decline Syndrome (OQDS) has devastated Apulian olive groves. This study addresses the urgent need to identify resistant olive genotypes by monitoring 16 potentially tolerant genotypes over six years, assessing symptom severity and bacterial load. These genotypes, which survived in heavily infected areas, showed varied responses to Xfp; some maintained low symptom severity with minimal bacterial presence (high or u

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Scortichini, Marco, and Domenico Ragno. "Survey on Resilient Olive Groves Previously Severely Damaged by Xylella fastidiosa subsp. pauca in Salento (Apulia, Italy)." Agronomy 14, no. 9 (2024): 2003. http://dx.doi.org/10.3390/agronomy14092003.

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The initial outbreak of Xylella fastidiosa subsp. pauca (Xfp) on olive groves in Salento (Apulia, Italy) dates back to the years 2008 and 2009 when extensive twig and branch diebacks were observed in the area of Gallipoli area (province of Lecce). Subsequently, the bacterium also spread northwards to other areas of Apulia. In many cases, entire olive groves, also including the centennial ones, died. After the crown collapse, in many cases, it has been observed that the suckers are resprouting at the base of the trunk. After two to three years, such suckers usually died as well. However, during

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Rizzo, Domenico, Matteo Bracalini, Sara Campigli, et al. "Quantitative Real-Time PCR Based on SYBR Green Technology for the Identification of Philaenus italosignus Drosopoulos & Remane (Hemiptera Aphrophoridae)." Plants 11, no. 23 (2022): 3314. http://dx.doi.org/10.3390/plants11233314.

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The use of molecular tools to identify insect pests is a critical issue, especially when rapid and reliable tests are required. We proposed a protocol based on qPCR with SYBR Green technology to identify Philaenus italosignus (Hemiptera, Aphrophoridae). The species is one of the three spittlebugs able to transmit Xylella fastidiosa subsp. pauca ST53 in Italy, together with Philaenus spumarius and Neophilaenus campestris. Although less common than the other two species, its identification is key to verifying which role it can play when locally abundant. The proposed assay shows analytical speci

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Scortichini, Marco. "The Epidemiology and Control of “Olive Quick Decline Syndrome” in Salento (Apulia, Italy)." Agronomy 12, no. 10 (2022): 2475. http://dx.doi.org/10.3390/agronomy12102475.

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Xylella fastidiosa subsp. pauca sequence type 53 was found to be associated with olive trees showing extensive twig and branch dieback and plant death in the Gallipoli area of Salento and the common name of “olive quick decline syndrome” (OQDS) was given to the disease. Repeated interceptions in Europe and Italy of ornamental coffee plants originated from Central America, jointly in phylogenetic analyses of many strains of the pathogen, indicated this origin as the most probable source of its introduction in Salento. Drought events could have been conducive to the initial outbreaks of the dise

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D’Attoma, Giusy, Massimiliano Morelli, Leonardo De La Fuente, et al. "Phenotypic Characterization and Transformation Attempts Reveal Peculiar Traits of Xylella fastidiosa Subspecies pauca Strain De Donno." Microorganisms 8, no. 11 (2020): 1832. http://dx.doi.org/10.3390/microorganisms8111832.

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Xylella fastidiosa subsp. pauca strain De Donno has been recently identified as the causal agent of a severe disease affecting olive trees in a wide area of the Apulia Region (Italy). While insights on the genetics and epidemiology of this virulent strain have been gained, its phenotypic and biological traits remained to be explored. We investigated in vitro behavior of the strain and compare its relevant biological features (growth rate, biofilm formation, cell–cell aggregation, and twitching motility) with those of the type strain Temecula1. The experiments clearly showed that the strain De

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Haddad, N., M. C. Smaili, M. Afechtal, et al. "Worldwide potential insect vectors of Xylella fastidiosa and assessment of their importance with a focus on Morocco." Hellenic Plant Protection Journal 17, no. 1 (2024): 1–30. http://dx.doi.org/10.2478/hppj-2024-0001.

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Abstract In Morocco, the climate conditions are favorable for the establishment and the spread of Xylella fastidiosa (X.f). However, the successful establishment of the bacterium depends on many factors; mainly: bacterial subspecies and sequence type, host plants susceptibility, feeding behavior and transmission efficiency of the insect vectors. Knowledge of the relationship between the bacterium–affected crop agro-ecosystem and potential insect vectors is of crucial importance. In this work, we list the tritrophic interaction X.f-host plants-insect vectors that occur worldwide in order to app

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Susca, Leonardo, Oriana Potere, Vincenzo Roseti, et al. "EVALUATION OF A SAMPLING METHOD FOR XYLELLA FASTIDIOSA DETECTION IN OLIVE TREES." Journal of Plant Pathology 98S (December 1, 2016): S64—S65. https://doi.org/10.5281/zenodo.344787.

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To assess the presence of the xylem-limited bacterium Xylella fastidiosa subsp. pauca strain CoDiRO in olive trees, a specific sampling method was evaluated. Symptomatic and symptomless plants were randomly selected in four olive orchards located in the province of Lecce (Southern Italy). The crown of each plant was subdivided into a lower and an upper portion; four samples were collected from each layer in the main four cardinal directions. A total of eight samples per plant, composed of one- or two-year-old asymptomatic twigs, were collected next to branches showing leafscorch symptoms. In t

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Camposeo, Salvatore, Gaetano Alessandro Vivaldi, and Maria Saponari. "Attempts to Reduce the Systemic Spread of Xylella fastidiosa in Olive Trees by Pruning." Agronomy 12, no. 12 (2022): 2917. http://dx.doi.org/10.3390/agronomy12122917.

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Xylella fastidiosa subsp. pauca (Xfp) is the plant pathogenic bacterium causing the epidemic of olive quick decline syndrome decimating olive trees in the Apulia region (southern Italy). The lack of any effective therapeutic application for the control of this pathogen and its categorization as a regulated quarantine pathogen in many countries worldwide, impose mandatory eradication and containment measures. Based on current EU legislation, containment measures apply in those areas where the bacterium is widely established, such as in the Apulia region, and thus containment strategies to mitig

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Castrignanò, Annamaria, Antonella Belmonte, Ilaria Antelmi, et al. "Semi-Automatic Method for Early Detection of Xylella fastidiosa in Olive Trees Using UAV Multispectral Imagery and Geostatistical-Discriminant Analysis." Remote Sensing 13, no. 1 (2020): 14. http://dx.doi.org/10.3390/rs13010014.

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Xylella fastidiosa subsp. pauca (Xfp) is one of the most dangerous plant pathogens in the world. Identified in 2013 in olive trees in south–eastern Italy, it is spreading to the Mediterranean countries. The bacterium is transmitted by insects that feed on sap, and causes rapid wilting in olive trees. The paper explores the use of Unmanned Aerial Vehicle (UAV) in combination with a multispectral radiometer for early detection of infection. The study was carried out in three olive groves in the Apulia region (Italy) and involved four drone flights from 2017 to 2019. To classify Xfp severity leve

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Vanhove, Mathieu, Adam C. Rechtless, Anne Sicard, et al. "Genomic Diversity and Recombination among Xylella fastidiosa Subspecies." July 17, 2019. https://doi.org/10.1128/AEM .02972-18.

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<em>Xylella fastidiosa </em>is an economically important bacterial plant pathogen. With insights gained from 72 genomes, this study investigated differences among the three main subspecies, which have allopatric origins: <em>X. fastidiosa</em> subsp. <em>fastidiosa</em>, <em>multiplex</em>, and <em>pauca</em>. The origin of recombinogenic<em> X. fastidiosa</em> subsp. <em>morus </em>and <em>sandyi </em>was also assessed. The evolutionary rate of the 622 genes of the species core genome was estimated at the scale of an <em>X. fastidiosa </em>subsp. <em>pauca </em>subclade (7.62 107 substitution

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Vanhove, Mathieu, Adam C. Retchless, Anne Sicard, et al. "Genomic Diversity and Recombination among Xylella fastidiosa Subspecies." Applied and Environmental Microbiology 85, no. 13 (2019). http://dx.doi.org/10.1128/aem.02972-18.

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ABSTRACT Xylella fastidiosa is an economically important bacterial plant pathogen. With insights gained from 72 genomes, this study investigated differences among the three main subspecies, which have allopatric origins: X. fastidiosa subsp. fastidiosa, multiplex, and pauca. The origin of recombinogenic X. fastidiosa subsp. morus and sandyi was also assessed. The evolutionary rate of the 622 genes of the species core genome was estimated at the scale of an X. fastidiosa subsp. pauca subclade (7.62 × 10−7 substitutions per site per year), which was subsequently used to estimate divergence time

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"Xylella fastidiosa subsp. pauca. [Distribution map]." Distribution Maps of Plant Diseases, No.April (August 1, 2018). http://dx.doi.org/10.1079/dmpd/20183138506.

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Abstract A new distribution map is provided for Xylella fastidiosa subsp. pauca Schaad et al. Gammaproteobacteria: Xanthomonadales: Xanthomonadaceae. Hosts: olive (Olea europaea), coffee (Coffea) Citrus, Polygala myrtifolia. Information is given on the geographical distribution in Europe (France, Mainland France, Italy, Spain, Balearic Islands), Central America & Caribbean (Costa Rica), South America (Argentina, Brazil, Bahia, Minas Gerais, Sao Paulo, Ecuador).

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