A5010777780- Plant Pathogenic Bacteria Studies
- Plant-Microbe Interactions and Immunity
- Plant Pathogens and Fungal Diseases
- Legume Nitrogen Fixing Symbiosis
- Genomics and Phylogenetic Studies
- Particle physics theoretical and experimental studies
- Plant pathogens and resistance mechanisms
- High-Energy Particle Collisions Research
- Microbial Community Ecology and Physiology
- Quantum Chromodynamics and Particle Interactions
- Distributed and Parallel Computing Systems
- Superconducting Materials and Applications
- Advanced Computational Techniques and Applications
- Bacteriophages and microbial interactions
- Phytoplasmas and Hemiptera pathogens
- Cosmology and Gravitation Theories
- Viral gastroenteritis research and epidemiology
- RNA and protein synthesis mechanisms
- Bacterial Identification and Susceptibility Testing
- Neonatal and Maternal Infections
- Streptococcal Infections and Treatments
- Advanced Proteomics Techniques and Applications
- Plant tissue culture and regeneration
- Soybean genetics and cultivation
- Vibrio bacteria research studies
ZHAW Zurich University of Applied Sciences
2016-2025
Institut de Systématique, Évolution, Biodiversité
2021
Genomics (United Kingdom)
2018-2020
Agroscope
2010-2019
Sorbonne Université
2013
Université Claude Bernard Lyon 1
2007-2012
Ecologie Microbienne Lyon
2004-2012
Centre National de la Recherche Scientifique
2007-2012
European Organization for Nuclear Research
1999-2004
Hungarian Academy of Sciences
2004
Pectinolytic bacteria have been recently isolated from diseased potato plants exhibiting blackleg and slow wilt symptoms found in a number of European countries Israel. These Gram-reaction-negative, motile, rods were identified as belonging to the genus Dickeya, previously Pectobacterium chrysanthemi complex (Erwinia chrysanthemi), on basis production PCR product with pelADE primers, 16S rRNA gene sequence analysis, fatty acid methyl esterase phosphatases ability produce indole acids...
During evolution, plants have become associated with guilds of plant-growth-promoting rhizobacteria (PGPR), which raises the possibility that individual PGPR populations may developed mechanisms to cointeract one another on plant roots. We hypothesize this has resulted in signaling phenomena between different types colonizing same Here, objective was determine whether Pseudomonas secondary metabolite 2,4-diacetylphloroglucinol (DAPG) can act as a signal Azospirillum and enhance...
Bacteria; Phylum Proteobacteria; Class Gammaproteobacteria; Order Lysobacterales (earlier synonym of Xanthomonadales); Family Lysobacteraceae Xanthomonadaceae); Genus Xanthomonas; Species X. hortorum; Pathovars: pv. carotae, vitians, hederae, pelargonii, taraxaci, cynarae, and gardneri.
The phytostimulatory alphaproteobacterium Azospirillum lipoferum 4B exhibits the plant-beneficial gene acdS, which enables deamination of ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). Here, we show that acdS is in vicinity acdR, a homolog to leucine-responsive regulator lrp, A. and most other acdS+ Proteobacteria. Unlike Beta- Gammaproteobacteria, (and acdR) preferentially located on symbiotic islands plasmids Alphaproteobacteria. In 4B, was mapped 750-kb plasmid lost...
Azospirillum strains have been used as plant-growth-promoting rhizobacteria (PGPR) of cereal crops, but their adaptation to the root remains poorly understood. Here, we a global approach based on differential fluorescence induction (DFI) promoter trapping identify genes wheat isolate brasilense Sp245 that are induced in presence spring seed extracts. Fluorescence-based flow cytometry sorting cells was validated using PlacZ, PsbpA and PnifH promoters egfp. A random library constructed by...
ABSTRACT Xanthomonas arboricola is a complex bacterial species which mainly attacks fruit trees and responsible for emerging diseases in Europe. It comprises seven pathovars ( X. pv. pruni, corylina, juglandis, populi, poinsettiicola, celebensis, fragariae), each exhibiting characteristic disease symptoms distinct host specificities. To better understand the factors underlying this ecological trait, we first assessed phylogenetic relationships among worldwide collection of strains by...
Xanthomonas arboricola pv. pruni is a quarantine bacterial pathogen that threatens peach production by causing necrotic spots on leaves and fruits, thus with the potential of severely reducing yields. The current understanding host plant defense responses to very limited. Using whole transcriptome sequencing, differential gene expression was analyzed at two time points, 2 h 12 post inoculation (hpi), comparing inoculated samples their respective controls. On total 19,781 known genes were...
Aquaponics combines hydroponic crop production with recirculating aquaculture. These systems comprise various compartments (fish tank, biofilter, sump, table, radial flow settler and anaerobic digester), each their own specific environmental pressures, which trigger the formation of unique microbial communities. Triplicated aquaponic were used to investigate community composition during three lettuce growing cycles. The sampling individual allowed patterns be generated using amplicon...
The causal organism of bacterial leaf spot Hydrangea L., Xanthomonas hydrangeae, was the subject a disease report and new species description in 2021. These publications, along with development specific isothermal diagnostic assay for X. recent awareness this pathogenic bacterium, combined wet weather conditions during summer 2021 Europe, have revealed broader historical current prevalence disease. Global trade plants appeared to play an important role dissemination pathogen. Furthermore,...
Pseudomonads producing the antimicrobial metabolite 2,4-diacetylphloroglucinol (Phl) can control soil-borne phytopathogens, but their impact on other plant-beneficial bacteria remains poorly documented. Here, effects of synthetic Phl and Phl(+) Pseudomonas fluorescens F113 Azospirillum brasilense phytostimulators were investigated. Most A. strains moderately sensitive to Phl. In vitro, induced accumulation carotenoids poly-β-hydroxybutyrate-like granules, cytoplasmic membrane damage growth...
Erwinia amylovora causes a major disease of pome fruit trees worldwide, and is regulated as quarantine organism in many countries. While some diversity isolates has been observed, molecular epidemiology this bacterium hindered by lack simple typing techniques with sufficiently high resolution. We report system E. based on variable number tandem repeats (VNTR) analysis. Repeats the genome were identified comparative genomic tools, VNTR markers developed validated. A Multiple-Locus Analysis...
Abstract The molecular basis of resistance and susceptibility host plants to fire blight, a major disease threat pome fruit production globally, is largely unknown. RNA-sequencing data from challenged mock-inoculated flowers were analyzed assess the susceptible response apple blight pathogen Erwinia amylovora . In presence 1,080 transcripts differentially expressed at 48 h post inoculation. These included putative resistance, stress, related, general metabolic, phytohormone related genes....
Diseases on Prunus spp. have been associated with a large number of phylogenetically different pathovars and species within the P. syringae complex. Despite their economic significance, there is severe lack genomic information these pathogens. The high phylogenetic diversity observed strains causing disease in nature, raised question whether other or complex were potentially pathogenic To gain insight into potential adaptation virulence spp., total twelve de novo whole genome sequences found...
We describe a novel species isolated from walnut (Juglans regia) which comprises non-pathogenic and pathogenic strains on walnut. The isolates, obtained single ornamental tree showing disease symptoms, grew yeast extract-dextrose-carbonate agar as mucoid yellow colonies characteristic of Xanthomonas species. Pathogenicity assays showed that while strain CPBF 424T causes in walnut, 367 was leaves. Biolog GEN III metabolic profiles disclosed some differences between other xanthomonads....
The objective of this study was to develop a rapid, sensitive detection assay for the quarantine pathogen Xanthomonas arboricola pv. pruni , causal agent stone fruit bacterial spot, an economically important disease Prunus spp. Unique targets were identified from X. genomes using comparative genomics pipeline other species, subspecies and pathovars, used identify specific diagnostic markers. Loop‐mediated isothermal amplification (LAMP) then applied these markers provide detection. method...
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,...
Type VI secretion systems (T6SS) are widespread among Gram-negative bacteria and have a potential role as essential virulence factors or to maintain symbiotic interactions. Three T6SS gene clusters were identified in the genome of E. amylovora CFBP 1430, which T6SS-1 T6SS-3 represent complete machineries, while T6SS-2 is reduced its content.To assess contribution T6SSs transcriptomic changes single double mutants two structural genes generated for T6SS-3. Plant assays showed that slightly...
Abstract Background The species Xanthomonas arboricola comprises up to nine pathovars, two of which affect nut crops: pv. juglandis , the causal agent walnut bacterial blight, brown apical necrosis, and vertical oozing canker Persian (English) walnut; corylina blight hazelnut. Both pathovars share a complex population structure, represented by different clusters several clades. Here we describe our current understanding symptomatology, dynamics, epidemiology, disease control. Taxonomic...