A5048293248- Microbial Community Ecology and Physiology
- Genomics and Phylogenetic Studies
- Legume Nitrogen Fixing Symbiosis
- Plant-Microbe Interactions and Immunity
- Plant Disease Resistance and Genetics
- Plant Pathogenic Bacteria Studies
- Mycorrhizal Fungi and Plant Interactions
- Plant nutrient uptake and metabolism
- Insect symbiosis and bacterial influences
- Mosquito-borne diseases and control
- Building materials and conservation
- Bacterial biofilms and quorum sensing
- Environmental DNA in Biodiversity Studies
- Photosynthetic Processes and Mechanisms
- Plant Pathogens and Fungal Diseases
- Escherichia coli research studies
- Infectious Diseases and Mycology
- Infections and bacterial resistance
- Parasitic Diseases Research and Treatment
- Community Development and Social Impact
- Microbial Fuel Cells and Bioremediation
- Biochemical and Structural Characterization
- GABA and Rice Research
- Biofuel production and bioconversion
- Evolution and Paleontology Studies
Centre National de la Recherche Scientifique
2014-2022
Université Claude Bernard Lyon 1
2014-2022
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2022
VetAgro Sup
2015-2022
Ecologie Microbienne Lyon
2016-2020
Abstract Soils are facing new environmental stressors, such as titanium dioxide nanoparticles (TiO 2 -NPs). While these emerging pollutants increasingly released into most ecosystems, including agricultural fields, their potential impacts on soil and its function remain to be investigated. Here we report the response of microbial community an exposed over 90 days TiO -NPs (1 500 mg kg −1 dry soil). To assess impact function, focused nitrogen cycle measured nitrification denitrification...
Plant strategies for soil nutrient uptake have the potential to strongly influence plant-microbiota interactions, due competition between plants and microorganisms acquisition and/or conservation. In present study, we investigate whether these plant could rhizosphere microbial activities via root exudation, contribute microbiota diversification of active bacterial communities colonizing root-adhering inhabiting tissues. We applied a DNA-based stable isotope probing (DNA-SIP) approach six...
Stenotrophomonas maltophilia, a ubiquitous Gram-negative γ-proteobacterium, has emerged as an important opportunistic pathogen responsible for nosocomial infections. A major characteristic of clinical isolates is their high intrinsic or acquired antibiotic resistance level. The aim this study was to decipher the genetic determinism among strains from different origins (i.e., natural environment and origin) showing various profiles. To purpose, we selected three isolated soil collected in...
Complex plant-microbe interactions have been established throughout evolutionary time, many of them with beneficial effects on the host in terms plant growth, nutrition, or health. Some corresponding modes action involve a modulation hormonal balance, such as deamination ethylene precursor 1-aminocyclopropane-1-carboxylate (ACC). Despite its ecological importance, our understanding ACC is impaired by lack direct molecular tools. Here, we developed PCR primers to quantify deaminase gene acdS...
Summary Plant rhizosphere soil houses complex microbial communities in which microorganisms are often involved intraspecies as well interspecies and inter‐kingdom signalling networks. Some members of these networks can improve plant health thanks to an important diversity bioactive secondary metabolites. In this competitive environment, the ability form biofilms may provide major advantages microorganisms. With aim highlighting impact bacterial lifestyle on metabolites production, we...
Mosquito larvae are naturally exposed to microbial communities present in a variety of larval development sites. Several earlier studies have highlighted that the habitat influences composition bacterial microbiota. However, little information is available on their fungal microbiota, i.e. mycobiota. In this study, we provide first simultaneous characterization and microbiota field-collected Aedes aegypti respective aquatic habitats. We evaluated whether associated with breeding site may...
The Asian tiger mosquito Aedes (Stegomya) albopictus is an invasive species that has spread across the world in last two decades, showing a great capacity to adapt contrasting climates and environments. While demonstrated many insects, contribution of bacterial symbionts ecology challenging aspect needs be investigated. Also some have already been identified Ae. using classical methods, but more accurate survey mosquito-associated diversity needed decipher potential biological functions...
Plant Growth-Promoting Rhizobacteria (PGPR) enhance plant health and growth using a variety of traits. Effective PGPR strains typically exhibit multiple plant-beneficial properties, but whether they are better adapted to the rhizosphere than with fewer properties is unknown. Here, we tested hypothesis that higher numbers would be preferentially selected by roots. To this end, co-occurrence 18 involved in enhanced nutrition, hormone modulation, or pathogen inhibition was analyzed molecular...
Abstract Limestone areas across the world develop karstic caves, which are populated by a wide range of macro‐ and microorganisms. Many these caves display Paleolithic art or outstanding speleothems, in last century they have been subjected to anthropization due touristic management intense human frequentation. Despite their cultural importance associated conservation issues, impact on cave biodiversity is not known. Here, we show that with specific biota modifications. We compared diversity...
Strain ARgP5T, an actinobacterium isolated from a root nodule present on Alnus incana subspecies rugosa shrub growing in Quebec City, Canada, was the subject of polyphasic taxonomic studies to clarify its status within genus Frankia . 16S rRNA gene sequence similarities and ANI values between ARgP5T type strains species with validly published names were 98.8 82 % or less, respectively. The silico DNA G+C content 72.4 mol%. is characterised by presence meso-A2pm, galactose, glucose, mannose,...
The World-famous UNESCO heritage from the Paleolithic human society, Lascaux Cave (France), has endeavored intense microclimatic perturbations, in part due to high touristic pressure. These perturbations have resulted numerous disturbances of cave ecosystem, including on its microbial compartment, which formation black stains especially rock faces passage. We investigated microbiome this by sampling three mineral substrates (soil, banks, and inclined planes) outside assess current assemblage...
Horizontal gene transfer (HGT) is considered as a major source of innovation in bacteria, and such expected to drive adaptation new ecological niches. However, among the many genes acquired through HGT along diversification history genomes, only fraction may have actively contributed sustained adaptation. We used phylogenetic approach accounting for (or groups genes) estimate genomes Agrobacterium biovar 1, diverse group soil plant-dwelling bacterial species. identified clade-specific blocks...
Plant biomass degradation in soil is one of the key steps carbon cycling terrestrial ecosystems. Fungal saprotrophic communities play an essential role this process by producing hydrolytic enzymes active on main components plant organic matter. Open questions field regard diversity species involved, major biochemical pathways implicated and how these are affected external factors such as litter quality or climate changes. This can be tackled environmental genomic approaches involving...
Recent studies have highlighted the potential role of microbiota in biology Aedes albopictus mosquito vector. This species is highly anthropogenic and exhibits marked ecological plasticity, with a resulting high to colonize wide range habitats-including anthropized areas-under various climatic conditions. We put forward hypothesis that climate activities, such as use antibiotics agriculture human medicine, might affect mosquito-associated bacterial community. thus studied additive impact...
Menstrual toxic shock syndrome (mTSS) is a severe disease that occurs in healthy women vaginally colonized by Staphylococcus aureus producing toxin 1 and who use tampons. The aim of the present study was to determine impact composition vaginal microbial communities on tampon colonisation S. during menses. We analysed microbiota menstrual fluids extracted from tampons 108 7 mTSS cases. Using culture, detected 40% volunteers 100% patients. Between class analysis culturomic 16S rRNA gene...
Summary To clarify the early molecular interaction between ectomycorrhizal partners, we performed a RNA‐Seq study of transcriptome reprogramming basidiomycete Hebeloma cylindrosporum before symbiotic structure differentiation with Pinus pinaster . Mycorrhiza was studied for comparison. By reference to asymbiotic mycelium, 47 and 46 genes were specifically upregulated over fivefold ( p ≤ 0.05) upon rhizosphere colonization root adhesion respectively. Other 45 throughout interaction, from...
The members of the genus Frankia are, with a few exceptions, group nitrogen-fixing symbiotic actinobacteria that nodulate mostly woody dicotyledonous plants belonging to three orders, eight families and 23 genera pioneer dicots. These bacteria have been characterized phylogenetically grouped into four molecular clusters. One clusters, cluster 1 contains strains induce nodules on Alnus spp. (Betulaceae), Myrica spp., Morella Comptonia (Myricaceae) global distributions. Some these produce not...
Anthropization of Palaeolithic caves open for tourism may favour collembola invasion and result in the formation black stains attributed to pigmented fungi. However, ecological processes underpinning stain are not fully understood. Here, we tested hypotheses that from Apse room Lascaux Cave display a specific microbiota enriched fungi, thriving on have potential consume disseminate these Metabarcoding showed neighbouring unstained parts strongly differed, with higher prevalence Ochroconis...
The plant microbiota may differ depending on soil type, but these probably share the same functions necessary for holobiont fitness. Thus, we tested hypothesis that phytostimulatory microbial functional groups are likely to co-occur in rhizosphere, using corresponding nitrogen fixation (nifH) and 1-aminocyclopropane-1-carboxylate deamination (acdS), i.e. two key modes of action plant-beneficial rhizobacteria. analysis three maize fields consecutive years showed quantitative PCR numbers nifH...
Enterohemorrhagic Escherichia coli (EHEC) are zoonotic agents associated with outbreaks worldwide. Growth of EHEC strains in ground beef could be inhibited by background microbiota that is present initially at levels greater than the pathogen E. coli. However, how outcompetes pathogenic bacteria unknown. Our objective was to identify metabolic pathways were altered natural order improve our understanding mechanisms controlling growth and survival EHECs beef. Based on 16S metagenomics...