Xavier Vekemans

Ancient U/V sex chromosomes reveal slow expansion of recombination suppression in Polytrichaceae mosses.

This study analyzes ancient U/V sex chromosomes in Polytrichaceae mosses, showing that recombination suppression has limited SDR expansion and functional degeneration despite their 124 million-year-old origin.

Genotyping the self-incompatibility locus of wild and cultivated Brassica using NGS technologies: application to the evaluation of mate limitation in the endangered species Brassica insularis

The paper genotypes the self-incompatibility locus in Brassica insularis using NGS methods, identifying S-alleles and showing low compatibility in a small population.

Breakdown of sporophytic self-incompatibility: Diploids versus tetraploids

The paper investigates whether sporophytic self-incompatibility breaks down more easily in tetraploid compared to diploid populations, finding that dominance relationships significantly influence this outcome.

Autopolyploidy exacerbates dominance masking under negative frequency-dependent selection: evidence from sporophytic self-incompatibility in Arabidopsis arenosa and A. lyrata

The paper shows autopolyploidy reduces heterozygosity at self-incompatibility loci under dominance masking, using Arabidopsis species data.

Autopolyploid establishment under gametophytic self-incompatibility: the impact of self-fertilization and pollen limitation

This study investigates how selfing rates and pollen limitation affect tetraploid establishment under gametophytic self-incompatibility.

Dominance modifiers at the Arabidopsis self-incompatibility locus retain proto-miRNA features and act through non-canonical pathways

The paper investigates sRNA precursors at the Arabidopsis self-incompatibility locus, showing they repress recessive alleles through non-canonical pathways and generate diverse sRNA molecules.

Innovation within stability: balancing selection preserves multigenic S-haplotype architecture in apple

The paper analyzes the genomic structure and evolution of the S-locus in apple to show how balancing selection maintains conserved S-haplotype architectures despite structural divergence.

Long-term balancing selection and the genetic load linked to the self-incompatibility locus in Arabidopsis halleri and A. lyrata.

The paper examines the genetic load linked to the self-incompatibility locus in Arabidopsis species, finding limited genomic influence of balancing selection on linked regions.

Inferring the demographic history of tetraploid species from genomic data

This paper provides a statistical framework using approximate Bayesian computation to infer demographic history in tetraploid species, accounting for complexities introduced by polyploidization and gene flow.

Base-pairing requirements for small RNA-mediated gene silencing of recessive self-incompatibility alleles in Arabidopsis halleri.

The paper investigates base-pairing requirements for small RNA-mediated gene silencing of recessive self-incompatibility alleles in Arabidopsis halleri using controlled crosses and RT-qPCR.