A5082444550- Plant and animal studies
- Evolution and Genetic Dynamics
- Plant Reproductive Biology
- Evolutionary Game Theory and Cooperation
- Genetic diversity and population structure
- Mathematical and Theoretical Epidemiology and Ecology Models
- Ecology and Vegetation Dynamics Studies
- Insect and Arachnid Ecology and Behavior
- Plant Molecular Biology Research
- Plant Parasitism and Resistance
- COVID-19 epidemiological studies
- Animal Behavior and Reproduction
- Opinion Dynamics and Social Influence
- Language and cultural evolution
- Animal Disease Management and Epidemiology
- Zoonotic diseases and public health
- Animal Ecology and Behavior Studies
- Stochastic processes and statistical mechanics
- Ecosystem dynamics and resilience
- Mycorrhizal Fungi and Plant Interactions
- Hemispheric Asymmetry in Neuroscience
- Physiological and biochemical adaptations
- Philosophy and History of Science
- Experimental Behavioral Economics Studies
- Yeasts and Rust Fungi Studies
Centre National de la Recherche Scientifique
2016-2025
Unité Évolution, Écologie et Paléontologie
2016-2025
Université de Lille
2016-2025
Taras Shevchenko National University of Kyiv
2022
University of Oxford
2017
University of Science and Technology
2016
Korea University of Science and Technology
2016
Laboratoire de Génétique & Evolution des Populations Végétales
2007-2015
Université Lille Nord de France
2010-2015
Écologie, Systématique et Évolution
2007
Abstract The olive ( Olea europaea L.) is a typical important perennial crop species for which the genetic determination and even functionality of self‐incompatibility SI ) are still largely unresolved. It not known whether under gametophytic or sporophytic control, yet fruit production in orchards depends critically on successful ovule fertilization. We studied light recent discoveries other genera Oleaceae family. Using intra‐ interspecific stigma tests 89 genotypes representative...
The prevention of fertilization through self-pollination (or pollination by a close relative) in the Brassicaceae plant family is determined genotype at self-incompatibility locus (S locus). many alleles this exhibit dominance hierarchy that determines which two allelic specificities heterozygous expressed phenotypic level. Here, we uncover evolution how least 17 small RNA (sRNA)-producing loci and their multiple target sites collectively control among within gene controlling pollen S-locus...
Abstract Self-incompatibility (SI) is a genetic system found in some hermaphrodite plants. Recognition of pollen by pistils expressing cognate specificities at two linked genes leads to rejection self and from close relatives, i.e., avoidance self-fertilization inbred matings, thus increased outcrossing. These generally have many alleles, yet the conditions allowing evolution new alleles remain mysterious. Evolutionary changes are clearly necessary both genes, since any mutation affecting...
Summary A rare homomorphic diallelic self‐incompatibility ( DSI ) system discovered in Phillyrea angustifolia (family Oleaceae, subtribe Oleinae) can promote the transition from hermaphroditism to androdioecy. If widespread and stable may explain exceptionally high rate of androdioecious species reported this plant family. Here, we set out determine whether occurs another Oleaceae lineage. We tested for Fraxininae, a lineage that diverged Oleinae c . 40 million yr ago. explored compatibility...
Abstract Self‐incompatibility (SI) is a self‐recognition genetic system enforcing outcrossing in hermaphroditic flowering plants and results one of the arguably best understood forms natural (balancing) selection maintaining variation over long evolutionary times. A rich theoretical empirical population genetics literature has considerably clarified how distribution SI phenotypes translates into fitness differences among individuals by combination inbreeding avoidance rare‐allele advantage....
We developed a general model of sporophytic self-incompatibility under negative frequency-dependent selection allowing complex patterns dominance among alleles. used this deterministically to investigate the effects on equilibrium allelic frequencies number classes, alleles per class, asymmetry in expression between pollen and pistil, whether acts male fitness only or both female fitnesses. show that so-called "recessive effect" occurs wide variety situations. found emerging properties...
Frequency-dependent selection is a major force determining the evolutionary dynamics of alleles at self-incompatibility locus (S-locus) in flowering plants. We introduce general method using numerical simulations to test several alternative models frequency-dependent on S-locus data from sporophytic systems, taking into account both genetic drift and observed patterns dominance interactions among haplotypes (S-haplotypes). Using molecular typing method, we estimated S-haplotype frequencies...
Flax (Linum usitatissimum) bast fibres are located in the stem cortex where they play an important role mechanical support. They contain high amounts of cellulose and so used for linen textiles composite industry. In this study, we screened annotated flax genome identified 14 distinct synthase (CESA) genes using orthologous sequences previously identified. Transcriptomics 'primary cell wall' 'secondary CESA showed that some were preferentially expressed different organs tissues providing...
We introduce and study a stochastic model for the dynamics of colonial species, which reproduce through fission or fragmentation. The rate depends on relative sizes colonies in population, growth is influenced by intrinsic environmental stochasticities. Our setting thus captures effect an external noise, correlating trait all colonies. In particular, we strength this correlation distribution resources between then extend to large class structured branching processes with interactions...
We present here a stochastic two‐locus, two‐habitat model for the evolution of migration with local adaptation and kin selection. One locus determines rate while other causes adaptation. show that opposing forces competition can lead to existence one or two convergence stable rates, notably depending on recombination between loci. linkage loci has antagonist effects: when is tight, cost increases, leading smaller equilibrium rates. However, tighter, population structure at tends be very high...
Background Theoretical studies predict that it is not possible to eradicate a disease under voluntary vaccination because of the emergence non-vaccinating "free-riders" when coverage increases. A central tenet this approach human behaviour follows an economic model rational choice. Yet, empirical reveal decisions do necessarily maximize individual self-interest. Here we investigate dynamics using dispenses with payoff maximization and assumes risk perception results from interaction between...
According to the current, widely accepted paradigm, evolutionary transition from hermaphroditism toward separate sexes occurs in two successive steps: an initial, intermediate step which unisexual individuals, male or female, sterility mutants coexist with hermaphrodites and a final that definitively establishes dioecy. Two nonexclusive processes can drive this transition: inbreeding avoidance reallocation of resources one sexual function other. Here, we report results controlled crosses...
The neutral polymorphism pattern in the vicinity of a selective sweep can be altered by both stochastic and deterministic factors. Here, we focus on impact another region influence first one. We study signature left positive selection at two closely linked loci, when beneficial mutations reach fixation. show that, depending timing sweeps their coefficients, hitchhiking effects interfere with each other, leading to less reduction heterozygosity than single same magnitude more importantly an...
Recent theoretical advances have suggested that various forms of balancing selection may promote the evolution dominance through an increase proportion heterozygote genotypes. We test whether can evolve in sporophytic self-incompatibility (SSI) system plants. SSI prevents mating between individuals expressing identical SI phenotypes by recognition pollen pistils, which avoids selfing and inbreeding depression. depend on a complex network relationships alleles at locus (S-locus). Empirical...
Inbreeding depression and mating systems evolution are closely linked, because the purging of deleterious mutations fitness individuals may depend on outcrossing vs. selfing rates. Further, accumulation vary among genomic regions, especially for genes linked to loci under balancing selection. Sporophytic self-incompatibility (SSI) is a common genetic mechanism in angiosperm that enables hermaphrodite plants avoid promote outcrossing. The SSI phenotype determined by S locus dominance...
Gametophytic self-incompatibility (GSI) is a widespread genetic system, which enables hermaphroditic plants to avoid self-fertilization and mating with close relatives. Inbreeding depression thought be the major force maintaining SI; however, inbreeding dynamical variable that depends in particular on system. In this article we use multilocus, individual-based simulations examine coevolution of SI within finite populations. We focus conditions for maintenance when self-compatible (SC)...