A5019056858- Chromosomal and Genetic Variations
- Genomics and Phylogenetic Studies
- Plant Molecular Biology Research
- Plant Disease Resistance and Genetics
- Legume Nitrogen Fixing Symbiosis
- Photosynthetic Processes and Mechanisms
- Mitochondrial Function and Pathology
- Plant Stress Responses and Tolerance
- Plant responses to elevated CO2
- Plant-Microbe Interactions and Immunity
- Plant Virus Research Studies
- Plant nutrient uptake and metabolism
- Plant Gene Expression Analysis
- Plant Genetic and Mutation Studies
- Plant Reproductive Biology
- Genomics and Chromatin Dynamics
- RNA modifications and cancer
- Arsenic contamination and mitigation
- ATP Synthase and ATPases Research
- CRISPR and Genetic Engineering
- Lipid metabolism and biosynthesis
- Nematode management and characterization studies
- Metabolism and Genetic Disorders
- RNA Research and Splicing
- Plant biochemistry and biosynthesis
Université de Perpignan
2009-2024
Laboratoire Génome et Développement des Plantes
2006-2024
Centre National de la Recherche Scientifique
2006-2023
Institut de Recherche pour le Développement
2009-2014
CEA Cadarache
2006
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2006
Aix-Marseille Université
2006
Université Paris Cité
2002-2004
Université Paris-Sud
2004
Institut National de la Recherche Agronomique
2000
Retrotransposons are the main components of eukaryotic genomes, representing up to 80% some large plant genomes. These mobile elements transpose via a “copy and paste” mechanism, thus increasing their copy number while active. Their accumulation is now accepted as factor genome size increase in higher eukaryotes, besides polyploidy. However, dynamics this process poorly understood. In study, we show that Oryza australiensis , wild relative Asian cultivated rice O. sativa has undergone recent...
Oaks are an important part of our natural and cultural heritage. Not only they ubiquitous in most common landscapes1 but have also supplied human societies with invaluable services, including food shelter, since prehistoric times2. With 450 species spread throughout Asia, Europe America3, oaks constitute a critical global renewable resource. The longevity (several hundred years) probably underlies their emblematic historical importance. Such long-lived sessile organisms must persist the face...
Vertical, transgenerational transmission of genetic material occurs through reproduction living organisms. In addition to vertical inheritance, horizontal gene transfer between reproductively isolated species has recently been shown be an important, if not dominant, mechanism in the evolution prokaryotic genomes. contrast, only a few (HT) events have characterized so far eukaryotes and mainly concern transposable elements (TEs). Whether these are frequent significant impact on genome remains...
Iron toxicity is a root related abiotic stress, occurring frequently in flooded soils. It can affect the yield of rice lowland production systems. This associated with high concentrations reduced iron (Fe(2+)) soil solution. Although first interface element roots, consequences an excessive uptake be observed several tissues. In original attempt to find both genes and transposable elements involved response we used microarray approach study transcriptional responses leaves cv. Nipponbare...
A cDNA from <i>Arabidopsis thaliana</i>and four related cDNAs <i>Nicotiana tabacum</i> that we have isolated encode hitherto unidentified members of the mitochondrial carrier family. These proteins been overexpressed in bacteria and reconstituted into phospholipid vesicles. Their transport properties demonstrate they are orthologs/isoforms a novel capable transporting both dicarboxylates (such as malate, oxaloacetate, oxoglutarate, maleate) tricarboxylates citrate, isocitrate,...
Screening of the Arabidopsis thaliana genome revealed three potential homologues mammalian and yeast mitochondrial DICs (dicarboxylate carriers) designated as DIC1, DIC2 DIC3, each belonging to carrier protein family. DIC1 are broadly expressed at comparable levels in all tissues investigated. DIC1–DIC3 have been reported previously uncoupling proteins, but direct transport assays with recombinant reconstituted DIC proteins clearly demonstrate that their substrate specificity is unique...
In the context of climate change, global rise temperature and intense heat waves affect plant development productivity. Among molecular perturbations that high induces in living cells is accumulation reactive oxygen species (ROS), which perturbs cellular redox state. plants, dynamics subcellular state have been poorly investigated under temperature. Glutathione plays a major role maintaining We its contribution adaptation Arabidopsis thaliana to contrasting regimes: ambient inducing...
Transposable elements (TEs) are mobile entities that densely populate most eukaryotic genomes and contribute to both their structural functional dynamics. However, TE-related sequences in plant animal correspond inactive, degenerated elements, due the combined effect of silencing pathways elimination through deletions. One major difficulties fully characterizing molecular basis genetic diversity a given species lies establishing its genome-wide transpositional activity. Here, we provide an...
Cooperation involving Plant Growth-Promoting Rhizobacteria results in improvements of plant growth and health. While pathogenic symbiotic interactions are known to induce transcriptional changes for genes related defence development, little is about the impact phytostimulating rhizobacteria on gene expression. This study aims at identifying significantly regulated rice roots upon Azospirillum inoculation, considering possible favored interaction between a strain its original host cultivar....
Rapid plant genome evolution is crucial to adapt environmental changes. Chromosomal rearrangements and gene copy number variation (CNV) are two important tools for sources the creation of new genes. However, their emergence takes many generations. In this study, we show that in Arabidopsis thaliana , a significant loss ribosomal RNA (rRNA) genes with past history mutation chromatin assembly factor 1 (CAF1) complex causes rapid changes structure. Using long-read sequencing microscopic...
Transposable elements are ubiquitous components of plant genomes. When active, these mobile can induce changes in the genome at both structural and functional levels. Availability complete sequence for several model species provides opportunity to study TEs plants an unprecedented scale. In case rice, annotation genomic variety Nipponbare has revealed that TE-related sequences form more than 25% its genome. However, most found inactive, either because alterations or they target various...
Transposable elements (TEs) are DNA repeats that must remain silenced to ensure cell integrity. Several epigenetic pathways including methylation and histone modifications involved in the silencing of TEs, regulation gene expression. In Arabidopsis thaliana, TE-derived plant mobile domain (PMD) proteins have been TE silencing, genome stability, control developmental processes. Using a forward genetic screen, we found PMD protein MAINTENANCE OF MERISTEMS (MAIN) acts synergistically...
Abstract BACKGROUND: The dissipation kinetics of the herbicide sulcotrione sprayed 4 times on a French soil was studied using laboratory microcosm approach. An advanced cultivation‐based method then used to isolate bacteria responsible for biotransformation sulcotrione. Chromatographic methods were employed as complementary tools define its metabolic pathway. RESULTS: Soil microflora able quickly biotransform (DT 50 ≈ 8 days). 2‐Chloro‐4‐mesylbenzoic acid, one main metabolites, clearly...
Together with local chromatin structure, gene accessibility, and the presence of transcription factors, positioning is implicated in expression regulation. Although basic mechanisms are expected to be conserved eukaryotes, less known about role plant cells, mainly due lack a highly resolutive approach. In this study, we adapted use ANCHOR system perform real-time single locus detection planta . DNA-labeling tool derived from chromosome partitioning found many bacterial species. We...
ABC transporters from the multidrug resistance‐associated protein (MRP) subfamily are glutathione S ‐conjugate pumps exhibiting a broad substrate specificity illustrated by numerous xenobiotics, such as anticancer drugs, herbicides, pesticides and heavy metals. The engineering of MRP into plants might be interesting either to reduce quantity xenobiotics taken up plant in context “safe‐food” strategies or, conversely, development phytoremediation which sequestered vacuolar compartment. In...
Silencing of transposable elements (TEs) is an essential process to maintain genomic integrity within the cell. In Arabidopsis , together with canonical epigenetic pathways such as DNA methylation and modifications histone tails, plant mobile domain (PMD) proteins MAINTENANCE OF MERISTEMS (MAIN) MAIN-LIKE 1 (MAIL1) are involved in TE silencing. addition, MICRORCHIDIA (MORC) ATPases, including MORC1, important cellular factors repressing TEs. Here, we describe genetic interaction connection...