Xylella Fastidiosa Active Containment Through a multidisciplinary-Oriented Research Strategy

Photo gallery

A collection of pictures of meetings, events, experiments, research organized and produced by the XF-ACTORS network.

– Kickoff meeting (November 14-15, 2016)


– Needle Inoculation


– 1st Annual Meeting (November 15-16 2017)

Pictures of the symptoms caused by Xylella fastidiosa in host plants 

– 2nd Annual Meeting (October 23-24-25-26 2018)

– 3rd Annual Meeting (October  28-29-30 2019)

 Kickoff meeting


The Kickoff meeting of XF-ACTORS, which has officially launched the start of the activities of the project, was held on 14-15 November 2016 at the headquarters of the Mediterranean Agronomic Institute (CIHEAM-IAMB), in Valenzano, close to the city of Bari (Italy).

The meeting was attended by the 29 project partners and also by representatives of the European Food Safety Authority (EFSA) and of the Directorates General AGRI and SANTE of the European Commission.

 Needle Inoculation


 The following pictures show the different steps of the needle-inoculation procedure.

Pin-prick inoculations of olives, oleander and myrtle leaf milkwort were done under confined conditions at CNR-IPSP and UNIBA-DiSSPA (Bari, Italy), in early March 2017.

As shown in the pictures, a drop of (10 µL) of inoculum (PBS-bacterial suspension 10^9CFU/ml) is placed on the stem of the plants, and punctured through 5-6 times with a fine needle. Three to 6 points of inoculations are made on the each plant, depending on the size.

Preparation of the bacterial suspension

Inoculation Xf in oleander

Inoculation Xf in olives

Inoculation Xf in Grapes

Inoculation Xf in Polygala myrtifolia

1st Annual meeting

The first Annual meeting of XF-ACTORS project has been held jointly with POnTE project (www.ponteproject.eu) on 15 and 16 November, 2017 in Palma de Mallorca at the University of the Balearic Island.

The meeting has been held after the end of the European conference on Xylella fastidiosa, organized by EFSA with the collaboration of UIB, XF-ACTORS, POnTE and EUPHRESCO.

Pictures of the symptoms caused by Xylella fastidiosa in host plants

Clicking on the picture will give access to a series of links that provide collections of pictures showing symptoms associated with the presence of Xylella fastidiosa in susceptible host plants in the different Countries where the pathogen is known to occur.

The links are divided into three categories:

  • Overview on the symptoms of major diseases caused by X. fastidiosa worldwide:
  • Symptoms associated with the infections in southern Italy:
  • Symptoms associated with the infections in the Balearic Islands and mainland Spain:

2nd Annual Meeting

The second Annual meeting of XF-ACTORS project has been held jointly with POnTE project on 23, 24, 25 and 26 October, 2018 in Valencia at the Instituto Valenciano de Investigaciones Agrarias (IVIA).


More than 60 scientific contributions were presented by the project members to provide the latest scientific results gathered within the framework of both European H2020 projects targeting emerging plant diseases.

The Proceedings of the meeting are available here.


3rd Annual Meeting

The 3rd Joint Annual Meeting of the POnTE and XF-ACTORS projects, has been held in Ajaccio from 28 to 30 October 2019.

The event was part of the Second Scientific Conference on ongoing research into X. fastidiosa co-organised by the two consortia

The Book containing the abstracts of contributions presented at the event is available here.

[Photos by Carlo Modica]