A5073952173- Insect symbiosis and bacterial influences
- Chromosomal and Genetic Variations
- Genomics and Phylogenetic Studies
- RNA and protein synthesis mechanisms
- Parasite Biology and Host Interactions
- Plant Virus Research Studies
- Genetic diversity and population structure
- Insect and Pesticide Research
- CRISPR and Genetic Engineering
- Insect Resistance and Genetics
- Forensic and Genetic Research
- Legume Nitrogen Fixing Symbiosis
- Nematode management and characterization studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Bacteriophages and microbial interactions
- Parasitic Diseases Research and Treatment
- Protist diversity and phylogeny
- Epigenetics and DNA Methylation
- Identification and Quantification in Food
- Viral Infectious Diseases and Gene Expression in Insects
- Plant Pathogens and Resistance
- Environmental DNA in Biodiversity Studies
- Powdery Mildew Fungal Diseases
- Insect and Arachnid Ecology and Behavior
- Invertebrate Immune Response Mechanisms
Centre National de la Recherche Scientifique
2016-2025
Université Paris-Saclay
2023-2025
Institut de Recherche pour le Développement
2023-2025
Évolution, Génomes, Comportement, Écologie
2023-2025
Écologie et Biologie des Interactions
2015-2024
Université de Poitiers
2014-2023
Ecologie & Evolution
2016-2021
Louisiana State University
2004-2006
Max Planck Society
2003-2004
Max Planck Institute for Evolutionary Anthropology
2003-2004
Significance Eukaryotes normally receive their genetic material from parents but may occasionally, like prokaryotes do, acquire DNA unrelated organisms through horizontal transfer (HT). In animals and plants, HT mostly concerns transposable elements (TEs), probably because these pieces of can move within genomes. Assessing the impact HTs on eukaryote evolution factors shaping dynamics requires large-scale systematic studies. We have analyzed genomes 195 insect species found that no fewer...
The emergence of new genes and functions is central importance to the evolution species. contribution various types duplications genetic innovation has been extensively investigated. Less understood creation by recycling coding material from selfish mobile elements. To investigate this process, we reconstructed evolutionary history SETMAR, a primate chimeric gene resulting fusion SET histone methyltransferase transposase element. We show that was recruited as part SETMAR 40-58 million years...
Gene duplication is one of the most important mechanisms for creating new genes and generating genomic novelty. Retrotransposon-mediated sequence transduction (i.e., process by which a retrotransposon carries flanking during its mobilization) has been proposed as gene mechanism. L1 exon shuffling potential reported in cell culture assays, two L1-mediated events have identified genome. SVA youngest family primates capable 3′ retrotransposition. In this study, we examined all full-length...
Horizontal transfer (HT) of DNA is an important factor shaping eukaryote evolution. Although several hundreds eukaryote-to-eukaryote HTs transposable elements (TEs) have been reported, the vectors underlying these transfers remain elusive. Here, we show that multiple copies two TEs from cabbage looper (Trichoplusia ni) transposed in vivo into genomes baculovirus Autographa californica nucleopolyhedrovirus (AcMNPV) during caterpillar infection. We further demonstrate both underwent recent HT...
Sex determination is a fundamental developmental pathway governing male and female differentiation, with profound implications for morphology, reproductive strategies, behavior. In animals, sex differences between males females are generally determined by genetic factors carried chromosomes. chromosomes remarkably variable in origin can differ even closely related species, indicating that transitions occur frequently independently different groups of organisms. The evolutionary causes...
Cytosine methylation is an ancient epigenetic modification yet its function and extent within genomes highly variable across eukaryotes. In mammals, controls transposable elements regulates the promoters of genes. insects, DNA generally restricted to a small subset transcribed genes, with both intergenic regions (TEs) depleted methylation. The evolutionary origin these patterns are poorly understood. Here we characterise evolution arthropod phylum. While common ancestor arthropods had low...
In many species with sex chromosomes, the Y is a tiny chromosome. However, dioecious plant Silene latifolia has giant ~550-megabase chromosome, which remained unsequenced so far. We used long- and short-read hybrid approach to obtain high-quality male genome. Comparative analysis of chromosomes their homologs in outgroups showed that highly rearranged degenerated. Recombination suppression between X extended several steps triggered massive accumulation repeats on as well nonrecombining...
Abstract Thirty-five percent of isopods are estimated to be infected by Wolbachia, an intracellular maternally inherited α-Proteobacterium. Previous studies have indicated that horizontal transfer Wolbachia strains may occur, although the mechanisms unclear. The wsp gene was sequenced from 17 harboured crustacean host species and three their associated predators parasites. Two major clades were found in crustacean, with relatives also insects, other restricted crustaceans. Highly divergent a...
Summary We have analyzed mtDNA HVI sequences and Y chromosome haplogroups based on 11 binary markers in 371 individuals, from populations the Caucasus neighbouring countries of Turkey Iran. haplogroup diversity was almost as high Central Asia Near East, significantly higher than Europe. More 27% variance Y‐haplogroups can be attributed to differences between populations, whereas showed much lower heterogeneity (less then 5%), suggesting a strong influence patrilocal social structure. Several...
Alu elements are primate-specific members of the SINE ( s hort in terspersed e lement) retroposon family, which comprise ∼10% human genome. Here we report first chromosomal-level comparison examining retroposition dynamics following divergence humans and chimpanzees. We find a twofold increase insertions to common chimpanzee Pan troglodytes ). The genomic diversity (polymorphism for presence or absence insertion) associated with these inserts indicates that, analogous recent nucleotide...
Wolbachia bacteria are obligate intracellular alpha-Proteobacteria of arthropods and nematodes. Although widespread among isopod crustaceans, they have seldom been found in non-isopod crustacean species. Here, we report infection fourteen new Our results extend the range infections terrestrial isopods amphipods (class Malacostraca). We occurrence two different strains host species (a an amphipod). Moreover, discovery goose barnacle Lepas anatifera (subclass Thecostraca) establishes class...
DNA derived from transposable elements (TEs) constitutes large parts of the genomes complex eukaryotes, with major impacts not only on genomic research but also how organisms evolve and function. Although a variety methods tools have been developed to detect annotate TEs, there are as yet no standard benchmarks-that is, way measure or compare their accuracy. This lack accuracy assessment calls into question conclusions wide range that depends explicitly implicitly TE annotation. In absence...
Many genes of large double-stranded DNA viruses have a cellular origin, suggesting that host-to-virus horizontal transfer (HT) is recurrent. Yet, the frequency these transfers has never been assessed in viral populations. Here we used ultra-deep sequencing 21 baculovirus populations extracted from two moth species to show diversity sequences (n = 86) can integrate into genomes during course infection. The majority 86 different are transposable elements (TEs, n 69) belonging 10 superfamilies...
Bdelloid rotifers are notorious as a speciose ancient clade comprising only asexual lineages. Thanks to their ability repair highly fragmented DNA, most bdelloid species also withstand complete desiccation and ionizing radiation. Producing well-assembled reference genome is critical step developing an understanding of the effects long-term asexuality DNA breakage on evolution. To this end, we present first high-quality chromosome-level assemblies for Adineta vaga, composed six pairs...
Despite being scarce in the human genome, active L1 retrotransposons continue to play a significant role its evolution. Because of their recent expansion, many L1s are not fixed humans, and, when present, mobilization potential can vary among individuals. Previously, we showed that great majority retrotransposition events humans caused by highly active, or hot, L1s. Here, four populations diverse geographic origins (160 haploid genomes), investigated degree sequence polymorphism three hot...