Satellite Events

4th European Conference on Xylella fastidiosa

Cooperative event co-organised by European Food Safety Authority (EFSA) with European Research projects on Xylella and Euphresco network.

5th annual EURL workshop for pests of plants on bacteria: taxonomy and diagnostics in phytobacteriology

Sponsored by: European Union Reference Laboratory (EURL) for pests of plants on bacteria.


Maria Bergsma-Vlami,
Netherlands Institute for Vectors, Invasive plants and Plant health (NIVIP-NVWA, Bacteriology group), Wageningen, The Netherlands

van Vaerenbergh

Johan van Vaerenbergh,
Flanders Research Institute for Agriculture, Fisheries and Food (ILVO, Plant Sciences, Bacteriology group), Merelbeke, Belgium


Stefania Loreti,
CREA-Research Centre for Plant Protection and Certification (CREA-DC, Laboratory of Phytopathology DIALAB, Bacteriology group), Rome, Italy


Tanja Dreo National Institute of Biology (NIB, Bacteriology and Metrology unit), Ljubljana, Slovenia

The European Union Reference Laboratory (EURL) for pests of plants on bacteria was established in 2019. This is an European Union initiative that aims to achieve an overall high level of diagnostics in bacteriology at National Reference Laboratories, primarily across the Member States. The main EURL activities encompass the organisation of proficiency tests (PT) in order to assess the diagnostic competence of the laboratories. Additionally, test performance studies (TPS) and studies to evaluate the suitability of critical reagents in diagnostic tests are annually included. The focus of the EURL activities is on bacteria belonging to the EU priority pests or listed as EU quarantine pests, including Xylella fastidiosa, Ralstonia solanacearum species complex, Xanthomonas citri pv. citri and ‘Candidatus Liberibacter’ on Citrus, Curtobacterium flaccumbaciens pv flaccumfaciens, Pantoae stewartii subsp. stewartii etc.

The 5th EURL Workshop aims to address several current issues and recent developments in the field of plant bacteriology, with the focus on taxonomy and diagnostics. Additionally, during this Workshop the activities and results obtained in TPSs and PTs between September 2022-August 2023 will be presented and the priorities to be given in the Work Program 2024-2025 will be highlighted. Should you have any questions related to the content of the 5th Annual EURL Workshop for Pests of Plants on Bacteria or administrative/practical issues please contact the EURL Bacteriology at

Biological induced resistance in plants against pathogens using beneficial microbes and natural substances

Organized by the French Phytopathological Society (SFP)

Emmanuelle Vigne,

INRAE, Colmar, France

Olivier Lemaire,

INRAE, Colmar, France

Ali Siah,

Junia, Lille, France

Induced immunity and resistance in plants against pathogens using beneficial microbes (fungi, bacteria, virus) and natural substances (bacterial metabolites or extracts, plant metabolites or extracts, bio-sourced compounds, etc.) is an ecofriendly biological control strategy promoting plant health, that fits with the current needs for sustainable agriculture and agroecology. The proposed symposium will focus on the recent advances in this area and will target all scientists and actors working or interested by such a concept. Particular attention will be addressed to the recent discoveries regarding crossprotection phenomenon against pathogenic microorganisms threatening plant health and crop production and to the mechanisms underlying plant defense elicitation and priming. The intrinsic and the extrinsic factors affecting the efficacy, the expression and the sustainability of induced immunity in field conditions will also be considered. The symposium will be organized in several specific sessions (orals, posters, and invited keynotes) dedicated to these topics and related issues. A round table as well as a visit of field trials could also be programmed in the framework of the event. The proposed symposium will be an opportunity to the researchers, agronomists, stakeholders, and industrials concerned by plant induced resistance and more generally by the agroecological transition in agriculture, to share their recent knowledge and future challenges regarding this topic.

Biology and paleovirology of the Caulimoviridae

Pierre-Yves Teycheney,
CIRAD-Bios - UMR PVBMT, Saint Pierre de la Réunion, France


Andrew Geering,
Centre for Horticultural Science - Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Australia

The Caulimoviridae is a family of plant-infecting viruses in the order Ortervirales, which in common with retroviruses, incorporates a reverse-transcription step in the replication cycle. Members of the Caulimoviridae are found throughout the world and infect a wide range of monocot and dicot plants, causing economically important diseases such as rice tungro and cacao swollen shoot. Cauliflower mosaic virus, the type species of the Caulimoviridae, has provided an exceptional model system to investigate all manner of biochemical pathways in plants, as well as fundamental aspects of virus replication, virion structure, intercellular movement and vector transmission. Endogenous viral elements (EVEs) that derive from caulimovirids are widespread in the genomes of tracheophyte plants, and some remain replication-competent and can cause spontaneous infections through activation by biotic or abiotic stresses. However, the majority of caulimovirid EVEs are replication-defective and can constitute a very large proportion of the plant genome. How these EVEs may benefit the plant is still a matter of conjecture and is a very active area of research. Caulimovirid EVEs also act as molecular fossils and can be used to infer the evolution of plant viruses over unprecedented timescales. This 1.5 day symposium will offer a unique opportunity to present the latest advances in research on the Caulimoviridae and to discuss future research directions and collaborations. It will be divided into four sessions covering key issues :

Session 1 - Replication and host-vector-virus interactions.
Session 2 - Diagnosis, epidemiology and control.
Session 3 - Endogenous viral elements: pathogenicity, functions and insights into virus evolution.
Session 4 - Summation: highlights of meeting, gaps in knowledge, taxonomic issues.
Sessions 1-3 will start with an opening keynote lecture providing the audience with an overview of the state-of-the-art on each topic, to be followed by selected presentations by participants.

Forest pathology field trip

Co-organized by the French Phytopathological Society (SFP) and the International Society for Plant Pathology (ICPP)

Fusarium wilt disease of banana: how to tackle a pandemic?

Prof. Dr. André Drenth

Program Leader Crop Protection
Centre for Horticultural Science - The University of Queensland
Level 2C West, Ecosciences Precinct, GPO Box 267, BRISBANE QLD 4001 AUSTRALIA
Ph +61 7 3443 2460, E:


Prof. Dr. Gert HJ Kema 

Chair at the Laboratory of Phytopathology 

Wageningen University and Research

P.O. Box 16, 6700 AA Wageningen, The Netherlands | Wageningen Campus, building Radix 107 | Droevendaalsesteeg 1, 6708 PB Wageningen The Netherlands | +31.317.480632, +31.6.1094.6815 |


Organizing Institutions:

University of Queensland, Brisbane, Australia

Wageningen University and Research, Wageningen, The Netherlands

Fusarium wilt of banana (FWB) caused by Tropical Race 4 is a major threat to banana production. The commonest Cavendish banana varieties are very susceptible to this pathogen. The satellite comprises sessions that address the current distribution and impact of FWB, the biology of the causal fungi, novel control methods from quarantine strategies to gene silencing, new approaches in genetics, genomics and breeding, and an update on GM strategies. The final session underscores the importance of global alliances and partnerships. The meeting is followed by a social event and a dinner sponsored by Chiquita. 

Global Plant Health Assessment Workshop

Laetitia Willocquet,
INRAe, France

Sonam Sah and Manjari Singh,
GBPant University, India

Federica Bové,
University of Piacenza, Italy

Serge Savary,,
GBPant University, India and UC Davis, USA

This workshop will allow the GPHA community to discuss and decide on further steps for the project. These steps will involve elements of conclusions, recommendations, and perspectives. Perspectives can be according to research, education, and policy. Specifically, the workshop will aim to identify organisation and timeline (1) to produce and disseminate conclusions and recommendations from the GPHA results and (2) for future activities within the GPHA project.


Sponsored by: U.S. Culture Collections Network


Matthew Ryan,

Neha Potnis,
Auburn University, USA

Rick Bennett,
University of Kentucky, USA

Dusti Gallagher,
U.S. Culture Collections Network

This workshop will identify and explore the diversity of culture collections and how they are being used to improve plant health. Living microbial collections can play a pivotal role in untangling community level interactions and contribute basic knowledge that can be translated in real world solutions. Workshop presentations will discuss proper maintenance and curation, successful strategies and tools to further plant health research and identify critical research areas: increasing plant growth within changing environments, disease diagnostics, reducing biotic and abiotic stresses, and microbiome manipulation. The fundamental knowledge gained with this session will support and enhance efforts that are underway to broaden and strengthen U.S. and European collection communities and their networks.

High-throughput sequencing in plant virology: from discovery to diagnostics


Maja Ravnikar,
National Institute of Biology (NIB); Ljubljana, Slovenia

Denis Kutnjak

Denis Kutnjak,
National Institute of Biology (NIB); Ljubljana, Slovenia

Giovani Baldissera

Giovani Baldissera,
Euphresco, Paris, France

Adrian Fox

Adrian Fox,
Fera Science Ltd.; York, UK

Marleen Botermans

Marleen Botermans,
National Plant Protection Organization of the Netherlands (NVWA); Wageningen, the Netherlands

Carla Oplaat

Carla Oplaat,
National Plant Protection Organization of the Netherlands (NVWA); Wageningen, the Netherlands

Dimitre Mollov

Dimitre Mollov,
USDA ARS Horticultural Crops Disease and Pest Management Research Unit; USA

High-throughput sequencing (HTS) technologies have revolutionised plant virus research and diagnostics by accelerating the discovery of new viruses and by providing a sensitive untargeted approach for the detection of viruses. The latter, together with high data-generation potential of HTS, enables discovery of new and emerging viruses from diverse hosts, archived or ancient samples, and untargeted virus detection in diverse matrices, as well as research on a broad range of topics, such as plant virus epidemiology, diversity and evolution. Many new plant virus discoveries, increased availability of sequence data, and a lagging biological characterisation of HTS-based findings call for a broad consideration on harmonisation of sequencing and data analysis approaches, as well as the interpretation of the results from the scientific and regulatory perspective. During this satellite meeting, different aspects of applying HTS in plant virology will be addressed and discussed. Topics will include: discovery and detection of new and emerging viruses; virus diversity, epidemiology, and evolution studies; development of virus detection and identification protocols and validation of HTS-based tests for plant virus diagnostics.

How can remote sensing better inform epidemiological modelling (and vice versa)? Calculating the basic reproduction number to inform management of plant pathogens.

Sponsored by: British Society for Plant Pathology, INRAE, International Society for Plant Pathology - Epidemiology Committee

Alexey Mikaberidze,
Reading, UK

Carlos Camino,
EC JRC, Italy

F. Fabre

Frédéric Fabre,
INRAE, Bordeaux, France

F. Hamelin

Frédéric Hamelin,
Institut Agro Rennes-Angers, France

Nik Cunniffe

Nik Cunniffe,
Cambridge, UK

Pieter Beck,
EC JRC, Italy

Stephen Parnell,
Salford, UK

Suzanne Touzeau

Suzanne Touzeau,
INRAE, Sophia Antipolis, France

This satellite meeting aims to foster links between the communities of researchers modelling plant disease and those interested in remote sensing. Indeed, the latter do not tend to have a background in disease modelling while the former are sometimes skilled data scientists but, typically, have limited understanding of the opportunities and challenges involved in interpreting remotely sensed information. Bringing these two communities together will clearly stimulate further developments in both fields. A more concrete focus will be on how remote sensing approaches can contribute to an enduring preoccupation of disease modellers, calculating the basic reproduction number, R0.

Nuts and Bolts for Plant Diseases Image Classification, an Artificial Intelligence Tool

Mathews Paret,
University of Florida, USA

Image classification tools that uses Artificial Intelligence is increasingly becoming relevant as a new approach for field detection of plant health issues. This session will cover the basics of image classification approaches by an industry presenter (Statlogic) followed by discussing real-world applications developed or in the process of development. The session will also review some of the new open-source image classification programs. This session is expected to be a hybrid of educational as well as research driven presentations and will shed light on opportunities in utilizing images for developing Artificial Intelligence tools in plant pathology.

Oomycete molecular genetics network meeting

Sponsored by: Oomycete Molecular Genetics Network

Elodie Gaulin

Elodie Gaulin,
Toulouse University, UT3, France

Laurent Camborde

Laurent Camborde,
Toulouse University, UT3, France

Bernard Dumas

Bernard Dumas,
Toulouse University, UT3, France

Oomycetes are a group of filamentous eukaryotic microorganisms widely present in natural environments, some of them including the main pathogenic species for plants, algae and animals. This international workshop will be devoted to the presentation of the most recent research on these organisms, aiming in particular at developing new control methods to limit their impact on agriculture and natural environments.

The workshop will include sessions devoted to molecular mechanisms of oomycete pathogenicity, host resistance, evolution and population genomics, and innovations in control.


Florence Hommais,
UMR 5240 Microbiologie Adaptation Pathogénie, Université de Lyon, Université Claude Bernard Lyon 1, Insa de Lyon, CNRS ; Lyon, France

Marie-Anne Barny,
UMR S-U113 Institut d’Ecologie et des Sciences de l’Environnement de Paris, Sorbonne Université, CNRS 7618 - IRD 242 - INRAE 1392 - UNIV. DE PARIS 113 - UNIV. PARIS EST CRETEIL 7618; Paris, France

Erwan Gueguen,
UMR 5240 Microbiologie Adaptation Pathogénie, Université de Lyon, Université Claude Bernard Lyon 1, Insa de Lyon, CNRS ; Lyon, France

Jan Van der Wolf,
Wageningen University & Research; The Netherlands

Zahar Haichar,
UMR 5240 Microbiologie Adaptation Pathogénie, Université de Lyon, Université Claude Bernard Lyon 1, Insa de Lyon, CNRS; Lyon, France

Denis Faure

Denis Faure,
Institute for Integrative Biology of the Cell (I2BC), CNRS; Lyon, France

Guy Condemine,
UMR 5240 Microbiologie Adaptation Pathogénie, Université de Lyon, Université Claude Bernard Lyon 1, Insa de Lyon, CNRS ; Lyon, France

Sylvie Reverchon,
UMR 5240 Microbiologie Adaptation Pathogénie, Université de Lyon, Université Claude Bernard Lyon 1, Insa de Lyon, CNRS ; Lyon, France

Pectobacteriaceae __ are well-known plant pathogenic bacteria that cause soft rot symptoms in a large spectrum of plants worldwide. Recently, symbionts of insects and nematodes, have been discovered classified within the family of Pectobacteriaceae. The plant pathogens belong mainly to the genera Pectobacterium and Dickeya while the symbionts have been associated with the recently described Symbiopectobacterium genus.

This conference aims to bring together specialists working on Pectobacteriaceae to discuss recent advances and future research on the following topics: Detection; Crop protection and resistance; Ecology, infection dynamics and reservoir; Molecular interaction: with the plant, the insect, the nematode and the environment. 

Phytobiomes Research for Plant Health

International Alliance for Phytobiomes Research



Kellye Eversole,
Executive Director, International Alliance for Phytobiomes Research

Matthew Ryan,
Curator, Genetic Resource Collection, CABI, UK

Having healthy plants is key to providing food security for the 9.8 billion people expected by 2050. But crops are facing many challenges, among them climate change and an increased exposure to biotic and abiotic stressors, such as pests, poor soil quality, low water availability and excessive heat. In order to make agriculture more productive and sustainable, we need to study plants in their biological, physical and environmental contexts, i.e. the “Phytobiome”. Phytobiomes research – a new, cross-cutting, multidisciplinary, holistic approach – focuses on the complex interactions between plants, microorganisms, soils, climate, environment, and management practices. In this workshop, we will showcase examples on how phytobiomes science can provide solutions to produce healthy plants to ensure food security for future generations.

Plant Health starts with Seed Health

Plant Health starts with Seed Health

Rose Souza Richards

Rose Souza Richards,
International Seed Federation (ISF)

Joyce Woudenberg

Joyce Woudenberg,
International Seed Federation (ISF)

Ludivine Thomas

Ludivine Thomas,
International Seed Federation (ISF)

Bénédicte Lebas

Bénédicte Lebas,
International Seed Federation (ISF)

Healthy seeds maximize chances for healthy plants and good harvests, particularly for vegetables as any damage leads to reduced yield and fruit marketability. Vegetable seed industry is active through the International Seed Health Initiative (ISHI), driven by the International Seed Federation (ISF) for developing and validating standard protocols for disease detection. Recent molecular techniques development helped hastening tests and increased sensitivity. Result biological relevance needs to be kept in mind as detection of pathogen particles does not necessarily lead to expressed diseases. Overview of ISF, ISHI and main methods will be presented here. A roundtable on topics like biological relevance, seed transmission and sensitivity of detection methods is part of the program.

Powdery mildew fungi: phylogenetics, phylogenomics, and molecular host-pathogen interactions

Levente Kiss

Levente Kiss,
University of Southern Queensland, Australia

Stefan Kusch

Stefan Kusch,
RWTH Aachen University, Germany

Powdery mildew fungi (Erysiphaceae) are common obligate biotrophic pathogens of over 10,000 plant species. Some cause economically important diseases of many agricultural and horticultural crops. Currently, there are more than 30 genome assemblies available from over 15 species representing eight powdery mildew genera. The Symposium will focus on the use of these genomic resources and other molecular data to better understand the identification, phylogeny, evolution, and host range expansions of powdery mildew fungi, and their interactions with host plant tissues at molecular level.

Rice Diseases

Guo-Liang WANG

Guo-Liang WANG,
Department of Plant Pathology, Ohio State University, USA


Plant Health Institute of Montpellier, CIRAD, Montpellier University; Montpellier, France

Rice is an important staple crop and critical for global food security. Both endemic and emerging pathogens greatly affect rice production and cause huge yield losses. This workshop aims at gathering people involved in research on rice pathogens and on their interactions with their host plant, and on developing control methods of rice diseases. It will provide a unique opportunity to get a worldwide overview of current rice diseases, gain information on emerging diseases, update knowledge in cutting-edge research topics and establish collaborations with a large community.

Soil Health and soilborne plant diseases

Pulse Crop Working Group

Dr. Mary Burrows

Dr. Mary Burrows,
Montana State University

Dr Uta McKelvy

Dr Uta McKelvy,
Montana State University

Dr Christophe Le May

Dr Christophe Le May,
IGEPP, INRAE, Institut Agro, Univ Rennes ; Rennes, France

Root rot diseases can be difficult to manage due to the broad host range and long-lived survival structures of the pathogens. Fungicides, crop genetic resistance, and cultural practices can be effective, but educating producers and implementation of the best practices at broad scales is difficult. In this workshop we will feature basic and applied work on soil health as it is related to plant diseases and how to communicate with stakeholders to implement best practices on the farm. Research presentations will be followed by interactive small group discussions where participants will exchange information to overcome research and outreach barriers.

Tn-Seq to reveal microbial lifestyles along plant interaction processes

French environmental genomics network (GDR GE)



Denis Faure,
Institute for integrative biology of the cell, CNRS-CEA-University of Paris-Saclay; Gif-sur-Yvette, France

Adam Deutschbauer

Adam Deutschbauer,
Department of Plant and Microbial Biology, UC Berkeley; CA, USA

Transposon-sequencing (Tn-Seq) emerged as a powerful molecular approach to investigate behavior of plant pathogens and symbionts along host colonization processes. This workshop will illustrate different ways to use Tn-Seq and the strengths and limits of the Tn-mutant screening approach in microbes, including bacteria and eucaryotes.

Understanding the ecology and evolution of bacterial wilt disease in the plant microbiomes

Dr. Ville-Petri Friman

Dr. Ville-Petri Friman,
University of York; York, UK

Dr. Andrea Harper

Dr. Andrea Harper,
University of York; York, UK


Dr Sara Franco Ortega,
University of York; York, UK

Ralstonia solanacearum is one of the most destructive bacterial plant pathogens worldwide, causing bacterial wilt and major crop losses, especially in the solanaceous plant family. While a solid understanding of the molecular interactions between the pathogen and crop plants have been established, these interactions are poorly understood in more complex rhizosphere microbiomes. Moreover, while increasing evidence suggests that plant-pathogen interactions can evolve rapidly, this is seldom recognised in the context of plant pathogen control. In this session, we will bring together experts from microbiome research, systems biology, plant pathology, experimental evolution and plant pathogen biocontrol to build a multidisciplinary view of the ecology and evolution of R. solanacearum in rhizosphere microbiomes. We aim to produce a holistic summary of how ecological and evolutionary information could be harnessed for bacterial wilt biocontrol and to identify key environmental drivers associated with disease outbreaks. We also welcome researchers interested in the R. solanacearum pangenome to better understand its genetic diversity in space and time. The satellite event will be accompanied by a special issue on the topic for example in FEMS Microbiology Ecology edited by Ville Friman (current Editor) and other organizers.


Sylvester Aigbe

Sylvester Osemare Aigbe,
Ambrose Alli University,
President of Phytopathological Society of Nigeria (PSN)

Writing grants can be very challenging for starters to figure out, and it is a competence that many do not have an opportunity to learn while in graduate school. This workshop will be particularly beneficial to early career professionals and graduate students. Areas to be covered will include but not limited to good grantsmanship, international opportunities, logic models, impact statements, effective communication of content and communication of outcomes of winning proposals. At the end of the workshop, participants are expected to be more knowledgeable on: how to find the appropriate grants to apply to, how to use logic model to develop a blueprint for grant proposals, how to tell a good story, components to a successful proposal, efficient budgeting and project evaluation/management tools. This workshop will involve lots of creative activities like using the GOPP to create a proposal concept, writing impact statements, filling in NIFA/NSF, INRAE, and EAFRD budget forms.