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November 2020
Research
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RESEARCH
Follow up on the results achieved by the XF-ACTORS research teams during 2020  
Exploring the olive xylem microbiome

"Culture-Dependent and Culture-Independent Characterization of the Olive Xylem Microbiota: Effect of Sap Extraction Methods"

Microbial endophytes can protect plants against pathogens, thus being a promising research area for the control of pathogens such as Xylella fastidiosa. But the microbial communities living in the olive xylems are still mostly unknown. This work provides new insights into the olive xylem microbiome and examines how culture isolation media, plant materials, and distinct extraction methods can affect the bacterial populations studied.
 
More information here.
Looking for microbial pockets of resistance

"Differences in the Endophytic Microbiome of Olive Cultivars Infected by Xylella fastidiosa across Seasons"

Research on microbial endophytes can help to identify beneficial microorganisms as biocontrol agents against Xylella fastidiosa. In this work, XF-Actors scientists compared the xylem microbiome changes in olive trees infected with X. fastidiosaacross the seasons. The comparison was among  trees from a resistant cultivar and a a susceptible cultivar. The results suggest that resistance mechanisms likely lie on factors that are independent of the microbiota structure.
 
More information here.
Environmental drivers of microbiome composition

"Soil microbial communities from olive cultivars are shaped by seasonality and geographical scales"
 

Studies on the microbiome are gaining importance to find solutions against plant pathogens such as Xylella fastidiosa. Against this background, understanding soil microbiome is becoming more and more relevant. Thanks to the XF-Actors project, scientists could sample the soil, rhizosphere, roots, xylem sap, stem tissues, leaf, and fruits from three olive cultivars in different seasons and locations.
 
More information here.
The spider sense for the olive groves spittlebug

"A Guild-Based Protocol to Target Potential Natural Enemies of Philaenus spumarius (Hemiptera: Aphrophoridae), a Vector of Xylella fastidiosa (Xanthomonadaceae): A Case Study with Spiders in the Olive Grove"

The spittlebug Philaenus spumarius is the primary vector of Xylella fastidiosa in the olive groves. In this paper, the XF-Actors scientists use an approach based on ecological guilds (i.e., different groups of organisms using a resource in the same way) to test diverse species of spiders as biological agents for the control of the spittlebug population. The result is a fast and easy protocol to identify potential natural enemies of P. spumarius among spiders.
 
More information here.
The spittlebug and the fly

"Biology and Prevalence in Northern Italy of Verrallia aucta (Diptera, Pipunculidae), a Parasitoid of Philaenus spumarius (Hemiptera, Aphrophoridae), the Main Vector of Xylella fastidiosa in Europe"
 
The meadow spittlebug Philaenus spumarius is the primary vector of Xylella fastidiosa in Europe. Identifying and evaluating the insect's possible natural enemies is a key-pathway to reduce the bacterium's spread significantly. In this paper, scientists developed a tool to identify the adult spittlebugs parasitized by Verrallia aucta, a fly present in several sites of northern Italy. The results give a general picture of the V. aucta life cycle on P. spumarius.
 
More information here.
NEWS & EVENTS
XF-ACTORS - Final event 26-30 April, 2021
 
The XF-ACTORS project final event will be held online on 26-30 April 2021 and will precede the European Conference on Xylella fastidiosa
The final event will include sessions for the different topics addressed by the project and an e-poster session. Project members will present the latest findings, experimental data and knowledge gained in the framework of the project. 
The event will be free of change and opened to all registrants.

Stay tuned for more information here
Online training course on monitoring and surveillance of olive pathogens

Researchers of different Institutions participating to XF-ACTORS project will contribute to the training course organized by CIHEAM Zaragoza and the International Olive Council on monitoring and surveillance of olive pathogens. Several presentations will provide scientific information on Xylella fastidiosa, with reference to the knowledge developed in the framework of XF-ACTORS. 

More information here
BRIGIT - Surveillance and response capacity for Xylella fastidiosa 

In the framework of the UK project BRIGIT different consortium events are going to be organized in the upcoming months. The themes of the first two events are Development and implementation of diagnostic tools for Xylella on 2 Dec 9.30 – 13.00, Modelling and Social Science on 16 Dec ± 9.00 – 13.00, and Xylella Awareness Week in March '21 (2-5 March '21). The latter will include events for experienced and new inspectors, business owners and citizen scientists, each on a different day of the week. All events will be on line and will involve different groups of stakeholders as appropriate.
During the first event, Dr. Giuliana Loconsole (IPSP-CNR) will present an overview of the diagnostic tools implemented and validated in Italy in the framework of the H2020 project POnTE and XF-ACTORS. 

More information here
XYLELLA FASTIDIOSA: HOSTS, SUBSPECIES AND DIFFUSION IN ITALY AND EUROPE
 
Under the mainstream of the Giornate Fitopatologiche an invited speech titled “Xylella fastidiosa: hosts, subspecies and diffusion in Italy and Europe” was presented by Stefania Loreti (CREA-DC of Rome). The speech deal with the main characteristics and distribution of the pathogen, their subspecies and Sequence Type (ST) worldwide, with particular focus on the Italian and European  situation and the possible recombination events among strains. Part of the evidence on X. fastidiosa are the results obtained within the Project XF-Actors.

More information here
PUBLICATIONS AND ARTICLES
SCIENTIFIC PAPERS
All Books, Project Publications by XF-ACTORS and Other publications on Xylella fastidiosa are available at: https://www.xfactorsproject.eu/project/
PROJECT DELIVERABLES

Download all the deliverables so far produced in the framework of the project XF-ACTORS. 
MULTIMEDIA
WANT TO KNOW MORE ABOUT XYLELLA FASTIDIOSA?
WATCH THE REGISTRATION OF THE MOST RECENT WEBINARS
Webinars XF-Actors Project
Did you miss some of the webinars organized by XF-Actors or you want to watch one of them again?
Check out this page on our web site: we collected all our educational webinars in a single player.
For the latest information on: detections of Xylella in Europe, research outcomes, international and national meetings, policy changes and scientific information on Xylella fastidiosa please visit the website of XF-ACTORS
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The project XF-ACTORS is a 4-year multi-actor project started in November 2016 and entirely dedicated to research on Xylella fastidiosa.

The consortium gathers 29 partners from all over the world, and integrates the expertise on different fields such as plant pathology, entomology, modelling, risk assessment and social sciences with the active involvement of farmers and nurserymen.
XF-ACTORS project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement N. 727987

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