A5031113457- Evolution and Genetic Dynamics
- Marine and coastal plant biology
- Genetics, Aging, and Longevity in Model Organisms
- Algal biology and biofuel production
- Plant Reproductive Biology
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Circadian rhythm and melatonin
- Chromosomal and Genetic Variations
- Genetic diversity and population structure
- Plant-Microbe Interactions and Immunity
- Marine and coastal ecosystems
- Plant Molecular Biology Research
- Animal Genetics and Reproduction
- Plant tissue culture and regeneration
- Photosynthetic Processes and Mechanisms
- Genetics and Physical Performance
- Polar Research and Ecology
- Protist diversity and phylogeny
- Legume Nitrogen Fixing Symbiosis
- Plant and animal studies
- Light effects on plants
Centre National de la Recherche Scientifique
2017-2024
Inserm
2021-2024
Université Côte d'Azur
2021-2024
Institut de Biologie Valrose
2024
Laboratoire de Biologie Intégrative des Modèles Marins
2016-2021
Station Biologique de Roscoff
2016-2021
Sorbonne Université
2017-2021
Écologie et Biologie des Interactions
2020
A single-nucleotide change underlies the transition from environmentally induced to genetically encoded matricidal hatching.
Although evolutionary transitions from sexual to asexual reproduction are frequent in eukaryotes, the genetic bases of these shifts remain largely elusive. Here, we used classic quantitative trait analysis, combined with genomic and transcriptomic information dissect basis asexual, parthenogenetic brown alga Ectocarpus. We found that parthenogenesis is controlled by sex locus, together two additional autosomal loci, highlighting key role chromosome as a major regulator reproduction. identify...
Brown algae are one of the most developmentally complex groups within eukaryotes. As in many land plants and animals, their main body axis is established early development, when initial cell gives rise to two daughter cells that have apical basal identities, equivalent shoot root identities plants, respectively. We show here mutations Ectocarpus DISTAG (DIS) gene lead loss structures during both gametophyte sporophyte generations. Several abnormalities were observed germinating dis mutants,...
Three types of sex chromosome system exist in nature: diploid XY and ZW systems haploid UV systems. For many years, research has focused exclusively on systems, leaving chromosomes determination largely neglected. Here, we perform a detailed analysis DNA sequence neutral diversity levels across the U V model brown alga Ectocarpus using large population dataset. We show that non-recombining regions (SDR) exhibit about half as much autosomes. This difference is consistent with reduced...
Evolutionary transitions from egg laying (oviparity) to live birth (viviparity) are common across various taxa. Many species also exhibit genetic variation in egg-laying mode or display an intermediate with laid eggs containing embryos at stages of development. Understanding the mechanistic basis and fitness consequences such remains experimentally challenging. Here, we report highly variable intra-uterine retention 316 Caenorhabditis elegans wild strains, some exhibiting strong retention,...
Evolutionary transitions from egg laying (oviparity) to live birth (viviparity) are common across various taxa. Many species also exhibit genetic variation in egg-laying mode or display an intermediate with laid eggs containing embryos at stages of development. Understanding the mechanistic basis and fitness consequences such remains experimentally challenging. Here, we report highly variable intra-uterine retention 316 Caenorhabditis elegans wild strains, some exhibiting strong retention,...
Most eukaryotes inherit their mitochondria from only one of parents. When there are different sexes, it is almost always the maternal that transmitted. Indeed, uniparental inheritance has been reported for brown alga Ectocarpus but we show in this study strains can exhibit patterns inheritance: siliculosus showed inheritance, as expected, crosses using species 7 exhibited either paternal or an unusual pattern transmission where progeny inherited mitochondria, not both. A possible correlation...
Evolutionary shifts from egg-laying (oviparity) to live birth (viviparity) are common across diverse taxa, and some species exhibit variability in modes or an intermediate mode with eggs containing embryos at various stages of development. How such natural quantitative variation egg retention arises through differences genetics, behaviour, physiology – how this ultimately connects specific fitness components remains poorly understood. Here, we investigate intraspecific the nematode...
ABSTRACT Evolutionary shifts from egg-laying (oviparity) to live birth (viviparity) are common across diverse taxa, and some species exhibit variability in modes or an intermediate mode with eggs containing embryos at various stages of development. How such natural quantitative variation egg retention arises through differences genetics, behaviour, physiology – how this ultimately connects specific fitness components remains poorly understood. Here, we investigate intraspecific the nematode...
Evolutionary transitions from oviparity to viviparity are frequent across diverse taxa. Some species also display intraspecific variation in parity mode, or they exhibit an intermediate mode by laying eggs containing embryos at variable, often advanced stages of development. How such natural quantitative egg retention arises through differences genetics, behaviour, and physiology – how this ultimately connects specific fitness components is not well-understood. Here, we study problem...
A bstract Although evolutionary transitions from sexual to asexual reproduction are frequent in eukaryotes, the genetic bases of these shifts remain largely elusive. Here, we used classic quantitative trait analysis, combined with genomic and transcriptomic information dissect basis asexual, parthenogenetic brown alga Ectocarpus . We found that parthenogenesis is controlled by sex locus, together two additional autosomal loci, highlight key role chromosome as a major regulator reproduction....