A5108026990- Genomics and Phylogenetic Studies
- Microbial Community Ecology and Physiology
- Plant Disease Resistance and Genetics
- Chromosomal and Genetic Variations
- Molecular Biology Techniques and Applications
- Wheat and Barley Genetics and Pathology
- Plant pathogens and resistance mechanisms
- Environmental DNA in Biodiversity Studies
- Genetics, Bioinformatics, and Biomedical Research
- Bacteriophages and microbial interactions
- Marine and coastal ecosystems
- Metal Extraction and Bioleaching
- Plant Pathogenic Bacteria Studies
- Genetics, Aging, and Longevity in Model Organisms
- Insect Resistance and Genetics
- Invertebrate Immune Response Mechanisms
- Cassava research and cyanide
- RNA and protein synthesis mechanisms
- Developmental Biology and Gene Regulation
- Fungal Biology and Applications
- Plant nutrient uptake and metabolism
- Hedgehog Signaling Pathway Studies
- Mine drainage and remediation techniques
- Helminth infection and control
- Streptococcal Infections and Treatments
Université Paris-Saclay
2018-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2011-2025
CEA Paris-Saclay
2021-2025
Genoscope
2015-2025
CEA Cadarache
2011
CEA Grenoble
2011
Laboratoire de Neurobiologie Cellulaire et Moléculaire
2010
Legumes (Fabaceae or Leguminosae) are unique among cultivated plants for their ability to carry out endosymbiotic nitrogen fixation with rhizobial bacteria, a process that takes place in specialized structure known as the nodule. belong one of two main groups eurosids, Fabidae, which includes most species capable fixation. comprise several evolutionary lineages derived from common ancestor 60 million years ago (Myr ago). Papilionoids largest clade, dating nearly origin legumes and containing...
Abstract To improve our understanding of the organization and evolution wheat (Triticum aestivum) genome, we sequenced annotated 13-Mb contigs (18.2 Mb) originating from different regions its largest chromosome, 3B (1 Gb), produced a 2x chromosome survey by shotgun Illumina/Solexa sequencing. All carried genes irrespective their chromosomal location. However, gene distribution was not random, with 75% them clustered into small islands containing three on average. A twofold increase density...
The Q gene encodes an AP2 -like transcription factor that played important role in domestication of polyploid wheat. chromosome 5A alleles ( 5AQ and 5Aq ) have been well studied, but much less is known about the q on wheat homoeologous chromosomes 5B 5Bq 5D 5Dq ). We investigated organization, evolution, function Q/q homoeoalleles hexaploid Triticum aestivum L.). sequences are highly conserved within among A, B, D genomes wheat, A B tetraploid S, diploid progenitors, intergenic regions locus...
Tenacibaculum maritimum is a devastating bacterial pathogen of wild and farmed marine fish with broad host range worldwide distribution. We report here the complete genome sequence T. type strain NCIMB 2154T. The consists 3,435,971–base pair circular chromosome 2866 predicted protein-coding genes. Genes encoding biosynthesis exopolysaccharides, IX secretion system, iron uptake systems, adhesins, hemolysins, proteases glycoside hydrolases were identified. They are likely involved in virulence...
Subtelomeres of most eukaryotes contain fast-evolving genes usually involved in adaptive processes. In common bean (Phaseolus vulgaris), the Co-2 anthracnose resistance (R) locus corresponds to a cluster nucleotide-binding-site leucine-rich-repeat (NL) encoding sequences, prevalent class plant R genes. To study recent evolution this gene cluster, we used combination sequence, genetic and cytogenetic comparative analyses between genotypes from two distinct pools (Andean Mesoamerican) that...
About half of seaweed biomass is composed polysaccharides. Most these complex polymers have a marked polyanionic character. For instance, the red algal cell wall mainly sulfated galactans, agars and carrageenans, while brown algae contain alginate fucose-containing polysaccharides (FCSP) as Some marine heterotrophic bacteria developed abilities to grow on such macroalgal This case Pseudoalteromonas carrageenovora 9T (ATCC 43555T), gammaproteobacterium isolated in 1955 which was an early...
Abstract Coral reef science is a fast-growing field propelled by the need to better understand coral health and resilience devise strategies slow loss resulting from environmental stresses. Key are symbiotic interactions established within complex holobiont, i.e . multipartite assemblages comprising host organism, endosymbiotic dinoflagellates, bacteria, archaea, fungi, viruses. Tara Pacific an ambitious project built upon experience of previous Oceans expeditions, leveraging...
Abstract Background Several studies suggested that the diploid ancestor of B genome tetraploid and hexaploid wheat species belongs to Sitopsis section, having Aegilops speltoides (SS, 2n = 14) as closest identified relative. However molecular relationships based on genomic sequence comparison, including both coding non-coding DNA, have never been investigated. In an attempt clarify these relationships, we compared, in this study, sequences Storage Protein Activator (SPA) locus region S Ae....
In higher eukaryotes, centromeres are typically composed of megabase-sized arrays satellite repeats that evolve rapidly and homogenize within a species' genome. Despite the importance centromeres, our knowledge is limited to few model species. We conducted comprehensive analysis common bean (Phaseolus vulgaris) centromeric DNA using genomic data, fluorescence in situ hybridization (FISH), immunofluorescence chromatin immunoprecipitation (ChIP). Two unrelated centromere-specific repeats,...
Abstract Background The ParaHox gene cluster is the evolutionary sister to Hox cluster. Whilst role of in patterning anterior-posterior axis bilaterian animals well established, and organisation vertebrate clusters intimately linked regulation, much less known about more recently discovered clustering, its relationship expression, has only been described deuterostomes. Conventional protostome models ( Drosophila melanogaster Caenorhabditis elegans ) are secondarily derived with respect...
Drechmeria coniospora is an obligate fungal pathogen that infects nematodes via the adhesion of specialized spores to host cuticle. D. frequently found associated with Caenorhabditis elegans in environmental samples. It used study nematode’s response infection. Full understanding this bi-partite interaction requires knowledge pathogen’s genome, analysis its gene expression program and a capacity for genetic engineering. The acquisition all three reported here. A phylogenetic placed close...
ABSTRACT Cyanate (OCN − ) is an organic nitrogen compound found in aquatic environments potentially involved phytoplankton growth. Given the prevalence and activity of cyanate lyase genes eukaryotic microalgae, has been suggested as alternative source environment. However, conditions under which expressed actual capacity microalgae to assimilate remain largely underexplored. Here, we studied metabolism cosmopolitan open-ocean picoalga Pelagomonas calceolata (Pelagophyceae Stramenopiles)...
Spodoptera frugiperda (Noctuidae) is a major agricultural pest throughout the American continent. The highly polyphagous larvae are frequently devastating crops of importance such as corn, sorghum, cotton and grass. In addition, Sf9 cell line, widely used in biochemistry for vitro protein production, derived from S. tissues. Many research groups using model organism to investigate questions plant adaptation, behavior or resistance pesticides. this study, we constructed reference...
*In plants, the evolution of specific resistance is poorly understood. Pseudomonas syringae effectors AvrB and AvrRpm1 are recognized by phylogenetically distinct (R) proteins in Arabidopsis thaliana (Brassicaceae) soybean (Glycine max, Fabaceae). In soybean, these resistances encoded two tightly linked R genes, Rpg1-b Rpg1-r. To study resistances, we investigated AvrB- AvrRpm1-induced responses common bean (Phaseolus vulgaris, *Common genotypes various geographical origins were inoculated...
Hyphomicrobium sp. strain MC1 is an aerobic methylotroph originally isolated from industrial sewage. This prosthecate bacterium was the first reported to grow with chloromethane as sole carbon and energy source. Its genome, consisting of a single 4.76-Mb chromosome, for chloromethane-degrading be formally reported.
Acid mine drainage (AMD) is a highly toxic environment for most living organisms due to the presence of many lethal elements including arsenic (As). Thiomonas (Tm.) bacteria are found ubiquitously in AMD and can withstand these extreme conditions, part because they able oxidize arsenite. In order further improve our knowledge concerning adaptive capacities bacteria, we sequenced assembled genome six isolates derived from Carnoulès AMD, compared them genomes Tm. arsenitoxydans 3As (isolated...
Hedgehog (Hh) genes play major roles in animal development and studies of their evolution, expression function point to differences among chordates. Here we focused on Hh lampreys order characterize the evolution signalling at emergence vertebrates. Screening a cosmid library river lamprey Lampetra fluviatilis searching preliminary genome assembly sea Petromyzon marinus indicate that have two genes, named Hha Hhb. Phylogenetic analyses suggest Hhb are lamprey-specific paralogs closely...
Structural Variations (SVs) are genomic rearrangements derived from duplication, deletion, insertion, inversion, and translocation events. In the past, SVs detection was limited to cytological approaches, then Next-Generation Sequencing (NGS) short reads partitioned assemblies. Nowadays, technologies such as DNA long read sequencing optical mapping have revolutionized understanding of in genomes, due enhancement power detection. This study aims investigate performance two techniques, 1)...
The iron-oxidizing species Acidithiobacillus ferrivorans is one of few acidophiles able to oxidize ferrous iron and reduced inorganic sulfur compounds at low temperatures (<10°C). To complete the genome At. strain CF27, new sequences were generated, an update assembly functional annotation undertaken, followed by a comparative analysis with other whose genomes are publically available. CF27 comprises 3,409,655 bp chromosome 46,453 plasmid. possesses genes allowing its adaptation cold,...
Mycoplasma mycoidessubsp.mycoidesis the etiologic agent of contagious bovine pleuropneumonia. We report here complete genome sequence strain T1/44, which is widely used as a live vaccine in Africa.
Piezophilic Desulfovibrio profundus strain 500-1 was isolated in the Japan Sea from a sediment layer at 500-m depth under water column of 1,000 m. Here, we report genome sequence this strain, which includes 4,168,905-bp circular chromosome and two plasmids 42,836 bp 6,167 bp.
Cyanate (OCN-) is potentially an important organic nitrogen source in aquatic environments given the prevalence and activity of cyanate lyase genes microalgae. However, conditions under which these are expressed actual capacity microalgae to assimilate remain underexplored. Here, we studied metabolism cosmopolitan picoalga Pelagomonas calceolata (Pelagophyceae, Stramenopiles) environmental metatranscriptomes transcriptomes from culture experiments different sources concentrations. We...