A5016253754- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Yeasts and Rust Fungi Studies
- Insect and Pesticide Research
- Plant Pathogens and Fungal Diseases
- Insect Pest Control Strategies
- Powdery Mildew Fungal Diseases
- Plant Pathogens and Resistance
- Entomopathogenic Microorganisms in Pest Control
- Forest Insect Ecology and Management
- Wheat and Barley Genetics and Pathology
- Plant and animal studies
- Bioenergy crop production and management
- Insect behavior and control techniques
- Evolution and Genetic Dynamics
- Allelopathy and phytotoxic interactions
- Fungal Plant Pathogen Control
- Plant Virus Research Studies
- Genetic Mapping and Diversity in Plants and Animals
- Banana Cultivation and Research
- Biological Control of Invasive Species
- Growth and nutrition in plants
- Horticultural and Viticultural Research
- Agriculture and Rural Development Research
- African Botany and Ecology Studies
CNR de la Résistance aux Antibiotiques
2017-2024
Centre d'Études Scientifiques et Techniques d'Aquitaine
2011-2024
Université de Bordeaux
2012-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2024
Université Claude Bernard Lyon 1
2019-2024
UMR BIOdiversity, GEnes & Communities
2011-2024
Lyon College
2023
Agence Nationale de Sécurité Sanitaire de l’Alimentation, de l’Environnement et du Travail
2015-2023
University of Helsinki
2013-2021
Université de Bourgogne
2019
Abstract Co-infections by multiple pathogen strains are common in the wild. Theory predicts co-infections to have major consequences for both within- and between-host disease dynamics, but data currently scarce. Here, using garden populations of Plantago lanceolata infected two Podosphaera plantaginis , either singly or under co-infection, we find highest prevalence co-infected treatments at host genotype population levels. A spore-trapping experiment demonstrates that hosts shed more...
Clonal expansion has been observed in several invasive fungal plant pathogens colonizing new areas, raising the question of origin clonal lineages. Using microsatellite markers, we retraced evolutionary history introduction chestnut blight fungus, Cryphonectria parasitica, North America and western Europe. Combining discriminant analysis principal components approximate Bayesian computation analysis, showed that events from genetically differentiated source populations have occurred both...
Trade‐offs in life‐history traits are a central tenet evolutionary biology, yet their ubiquity and relevance to realized fitness of populations remains questioned. pathogens particular interest because they may constrain the evolution epidemiology diseases. Here, studies that have measured trade‐offs (fungi, oomycetes viruses) agricultural crops, as well attacking wild host plants, reviewed. The majority report penalty associated with high virulence is evidenced by lower performance during...
Complex III inhibitors are key compounds in the control of Plasmopara viticola. They prone to development resistance, as demonstrated by emergence resistance quinone-outside inhibitors. By using a combination bioassays and molecular methods, we monitored sensitivity amisulbrom ametoctradin P. viticola populations French vineyards from 2012 2017.We found that alternative oxidase (AOX)-related mechanism was common populations. Target-site first detected 2015 is likely caused single point...
de niveau recherche, publiés ou non, émanant des établissements d'enseignement et recherche français étrangers, laboratoires publics privés.
Abstract The advent of molecular epidemiology has greatly improved our ability to identify the population sources and track pathogen movement. Yet wide spatial temporal scales usually considered are useful only infer historical migration pathways. In this study, Bayesian genetic assignments a landscape approach were combined unravel origin annual spread during single epidemic plant pathogen: poplar rust fungus Melampsora larici‐populina . study focused on particular area—the Durance River...
Wild and cultivated plants represent very different habitats for pathogens, especially when bear qualitative resistance genes. Here, we investigated to what extent the population genetic structure of a plant pathogenic fungus collected on its wild host can be impacted by deployment resistant cultivars. We studied one main poplar diseases, rust, caused Melampsora larici-populina. A thousand fifty individuals sampled from several locations in France were phenotyped their virulence profile...
Abstract Background Deciphering the mechanisms underlying insecticide resistance is key to devising appropriate strategies against this economically important trait. Myzus persicae , green peach‐potato aphid, a major pest that has evolved many classes, including neonicotinoids. M. neonicotinoids previously been shown result from two main mechanisms: metabolic resulting P450 overexpression and targetsite mutation, R81T. However, their respective contribution resistant phenotypes remains...
Abstract In an era marked by rapid global changes, the reinforcement and modernization of plant health surveillance systems have become imperative. Sixty-five scientists present here a research agenda for enhanced modernized to anticipate mitigate disease pest emergence. Our approach integrates wide range scientific fields (from life, social, physical engineering sciences) identifies key knowledge gaps, focusing on anticipation, risk assessment, early detection, multi-actor collaboration....
Abstract Understanding the molecular evolution of genes involved in parasite adaptation and role transposable elements (TEs) driving their diversification is key to unraveling how populations adapt environments. In phytophagous insects like aphids, olfactory (OR) gustatory receptor (GR) are crucial for host recognition, yet post-duplication remains insufficiently explored. Here, we analyzed 521 OR 399 GR genes, alongside TEs, across 12 aphid genomes with varying ranges. Aphid lineages...
Mosquito-borne diseases such as malaria, dengue, or chikungunya have been re-emerging all over the world, including in Europe. Managing resistance to public health pesticides mosquitoes is essential and requires global, integrated, coordinated actions strong engagement of decision-makers, scientists, operators. In this context, present work aims at proposing an integrated plan surveillance France French Overseas territories order provide graduated appropriate responses according situation....
Monitoring pesticide resistance is essential for effective and sustainable agricultural practices. Bioassays are the basis pesticide-resistance testing, but devising a reliable reproducible method can be challenging because these tests carried out on living organisms. Here, we investigated five critical parameters how they affected evaluation of to organophosphate phosmet or pyrethroid lambda-cyhalothrin using tarsal-contact protocol Drosophila suzukii, worldwide invasive pest. Three were...
Abstract Predicting and controlling infectious disease epidemics is a major challenge facing the management of agriculture, human wildlife health. Co‐evolutionarily derived patterns local adaptation among pathogen populations have potential to generate variation in epidemiology; however, studies systems mostly focused on interactions between competing pathogens or their hosts. In nature, parasites are also subject attack by hyperparasitic natural enemies that can severely impact upon...
Understanding the spatiotemporal dynamics of pesticide resistance at landscape scale is essential to anticipate evolution and spread new phenotypes. In crop mosaics, host plant specialization in pest populations likely dampen between different crops even mobile pests such as aphids. Here, we assessed contribution host-based genetic differentiation alleles
Abstract Fungal plant pathogens, especially rust fungi ( P ucciniales), are well known for their complex life cycles, which include phases of sexual and asexual reproduction. The effect multiplication on population genetic diversity has been investigated in the poplar fungus M elampsora larici‐populina using a nested hierarchical sampling scheme. Four levels were considered: leaf, twig, tree site. Both cultivated wild stands sampled at two time points start end epidemics. A total 641 fungal...
Abstract Ambrosia artemisiifolia L. (common ragweed) is a globally invasive, allergenic, troublesome arable weed. ALS-inhibiting herbicides are broadly used in Europe to control ragweed agricultural fields. Recently, ineffective treatments were reported France. Target site resistance (TSR), the only mechanism described so far for ragweed, was sought using high-throughput genotyping-by-sequencing 213 field populations randomly sampled based on presence. Additionally, non-target (NTSR) and its...
Understanding how variation in hosts, parasites, and the environment shapes patterns of disease is key to predicting ecological evolutionary outcomes epidemics. Yet spatially structured populations, host resistance may be confounded with parasite dispersal environmental factors that affect processes. To tease apart these drivers, we paired surveys natural epidemics experiments manipulating spatial susceptibility infection. We mapped wind-dispersed powdery mildew pathogen Podosphaera...
Abstract BACKGROUND Global and intensive use of insecticides has led to the emergence rapid evolution resistance in major pest Bemisia tabaci (Gennadius). In La Réunion, an island South West Indian Ocean, three whitefly species coexist, two which are predominant, indigenous Ocean (IO) invasive Middle East Asia Minor 1 (MEAM1) species. To assess level both these acetamiprid pymetrozine, populations were sampled at 15 collection sites located all over agroecosystems natural areas, tested using...