Marie-Anne Félix
Evolution of Caenorhabditis
Our general approach is to study the evolution of biological systems in a quantitative manner, joining evolutionary genetics and system biology in a synthetic framework.
The team thus combines evolutionary, ecological and quantitative biology approaches to the biology of a major model organism, the nematode worm Caenorhabditis elegans. A constant focus in the team concerns studies of the robustness, evolution and evolvability of a model system in developmental biology, C. elegans vulval cell fate patterning. We also pioneered the isolation of natural populations of C. elegans and relatives. We study their outcrossing rate, demographic and genetic population structure and biotic associations. We study the evolutionary variation in phenotype of the C. elegans wild isolates, including their interactions with viruses, bacteria and microsporidia and their reproduction and other life history characteristics.
Research Topics
- Evolutionary system biology: Quantitative evolution of an intercellular signaling network, experimental modulation and computational modeling, evolution of the genotype-phenotype map
- Natural populations of Caenorhabditis: Habitat, new species, population structure and reproductive modes
- Host-parasite evolution: Microbes associated with Caenorhabditis species (virus, bacteria, microsporidia, etc.), coevolution of nematodes and their parasites, evolution of small-RNA pathways
- Quantitative genetics: Characterization and molecular identification of intraspecific genetic variation underlying the evolution in various phenotypes (development, immunity, reproduction).
Nematode strain collection of the team: http://www.justbio.com/worms/index.php
Selected Recent Publications
Dubois, C.*, Gupta, S.*, Mugler, A.# and Félix M.-A.# (2021). Temporally regulated cell migration is sensitive to body size. Link
Besnard, F.*#, Picao Osorio, J.*, Dubois, C., and Félix, M.-A.# (2020). A broad mutational target explains a fast rate of phenotypic evolution. Link
Beets, I., Zhang, G., Fenk, L., Chen, C., Nelson, G.M., Félix, M.-A.# and de Bono, M.# (2020). Natural variation in a dendritic scaffold protein modifies experience-dependent plasticity by altering neuropeptide expression. Link
Richaud, A., Frézal, L., Tahan, S., Zhao, G., Kaur, T., Wang, D.# and Félix, M.-A.# (2019). Vertical transmission in Caenorhabditis nematodes of RNA molecules encoding a viral RNA-dependent RNA polymerase. Link
Vargas-Velazquez, A.M., Besnard, F. and Félix, M.-A. (2019). Necessity and contingency in developmental genetic screens: LIN-3, Wnt and semaphorin pathways in vulval induction of the nematode Oscheius tipulae. Link
Frézal, L., Demoinet, E., Braendle, C., Miska, E# and Félix, M.-A.# (2018). Natural genetic variation in a multigenerational phenotype in C. elegans. Link
Richaud, A., Zhang, G., Lee, D. Lee, J. and Félix, M-A. (2018). The local co-existence pattern of selfing genotypes in Caenorhabditis elegans natural metapopulations. Link
