ArticleMolecular biology and evolution2015
The Pseudoautosomal Regions of the U/V Sex Chromosomes of the Brown Alga Ectocarpus Exhibit Unusual Features.
Article in Molecular biology and evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 50 citations in OpenAlex.
- Brown algae produce hydrocarbons via fatty acid photodecarboxylase-dependent and fatty acid photodecarboxylase-independent pathways.Plant physiology · 2026Article
- Genome assemblies of the liverwort Blasia pusilla uncover a well-defined pseudoautosomal region on homomorphic UV sex chromosomes.Genome biology · 2026Article
- Revisiting giant virus-host dynamics in brown algae: old stories and new perspectives.The EMBO journal · 2026Review
- Extreme GC3 codon bias in a novel brown seaweed virus results in pseudoambigrammatic characteristics.Virus evolution · 2026Article
- Origin and evolutionary trajectories of brown algal sex chromosomes.Nature ecology & evolution · 2025Article
- Structural and evolutionary features of red algal UV sex chromosomes.Genome biology · 2025Article
- Characterization of the transposable element landscape shaping the Ectocarpus genome.Genome biology · 2025Article
- The Expansion and Diversification of Epigenetic Regulatory Networks Underpins Major Transitions in the Evolution of Land Plants.Molecular biology and evolution · 2025Article
- Interactions between U and V sex chromosomes during the life cycle of Ectocarpus.Development (Cambridge, England) · 2024Article
- Recent expansion of the non-recombining sex-linked region on Silene latifolia sex chromosomes.Journal of evolutionary biology · 2022Article
- Chromatin landscape associated with sexual differentiation in a UV sex determination system.Nucleic acids research · 2022Article
- Does the Pachytene Checkpoint, a Feature of Meiosis, Filter Out Mistakes in Double-Strand DNA Break Repair and as a side-Effect Strongly Promote Adaptive Speciation?Integrative organismal biology (Oxford, England) · 2022Article
- Switching it up: algal insights into sexual transitions.Plant reproduction · 2021Article
- Differential gene expression patterns during gametophyte development provide insights into sex differentiation in the dioicous kelp Saccharina japonica.BMC plant biology · 2021Article
- A key role for sex chromosomes in the regulation of parthenogenesis in the brown alga Ectocarpus.PLoS genetics · 2019Article
- UV Chromosomes and Haploid Sexual Systems.Trends in plant science · 2018Review
- Article
- DISTAG/TBCCd1 Is Required for Basal Cell Fate Determination inThe Plant cell · 2017Article
- Multiple gene movements into and out of haploid sex chromosomes.Genome biology · 2017Article
- Article
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8 authors at 2 institutions in 1 country.
Funding
Abstract
The recombining regions of sex chromosomes (pseudoautosomal regions, PARs) are predicted to exhibit unusual features due to their being genetically linked to the nonrecombining, sex-determining region. This phenomenon is expected to occur in both diploid (XY, ZW) and haploid (UV) sexual systems, with slightly different consequences for UV sexual systems because of the absence of masking during the haploid phase (when sex is expressed) and because there is no homozygous sex in these systems. Despite a considerable amount of theoretical work on PAR genetics and evolution, these genomic regions have remained poorly characterized empirically. We show here that although the PARs of the U/V sex chromosomes of the brown alga Ectocarpus recombine at a similar rate to autosomal regions of the genome, they exhibit many genomic features typical of nonrecombining regions. The PARs were enriched in clusters of genes that are preferentially, and often exclusively, expressed during the sporophyte generation of the life cycle, and many of these genes appear to have evolved since the Ectocarpales diverged from other brown algal lineages. A modeling-based approach was used to investigate possible evolutionary mechanisms underlying this enrichment in sporophyte-biased genes. Our results are consistent with the evolution of the PAR in haploid systems being influenced by differential selection pressures in males and females acting on alleles that are advantageous during the sporophyte generation of the life cycle.
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