ArticleMolecular biology and evolution2023
Sex-Biased Expression Is Associated With Chromatin State in Drosophila melanogaster and Drosophila simulans.
Article in Molecular biology and evolution, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Private QTLs and the genetic architecture of hierarchical size traits: from body size to sex-specific plasticity.G3 (Bethesda, Md.) · 2026Article
- A framework for identifying transcript orthologs: the evolution of sex bias in alternative transcript structure in Drosophila.bioRxiv : the preprint server for biology · 2026Article
- Response of Protein Coding Genes and microRNAs to Temperature Changes in Four Species of Drosophilids.Genome biology and evolution · 2026Article
- Sex-biased Expression of Genes and Transposable Elements in Hybrids from Drosophila mojavensis and Drosophila arizonae.Genome biology and evolution · 2026Article
- Chromatin Landscape Is Associated With Sex-Biased Expression and Drosophila-Like Dosage Compensation of the Z Chromosome in Artemia franciscana.Molecular biology and evolution · 2025Article
- Antioxidant and Anti-Inflammatory Properties of Quail Yolk Oil via Upregulation of Superoxide Dismutase 1 and Catalase Genes and Downregulation of EIGER and Unpaired 2 Genes in aAntioxidants (Basel, Switzerland) · 2024Article
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Abstract
In Drosophila melanogaster and D. simulans head tissue, 60% of orthologous genes show evidence of sex-biased expression in at least one species. Of these, ∼39% (2,192) are conserved in direction. We hypothesize enrichment of open chromatin in the sex where we see expression bias and closed chromatin in the opposite sex. Male-biased orthologs are significantly enriched for H3K4me3 marks in males of both species (∼89% of male-biased orthologs vs. ∼76% of unbiased orthologs). Similarly, female-biased orthologs are significantly enriched for H3K4me3 marks in females of both species (∼90% of female-biased orthologs vs. ∼73% of unbiased orthologs). The sex-bias ratio in female-biased orthologs was similar in magnitude between the two species, regardless of the closed chromatin (H3K27me2me3) marks in males. However, in male-biased orthologs, the presence of H3K27me2me3 in both species significantly reduced the correlation between D. melanogaster sex-bias ratio and the D. simulans sex-bias ratio. Male-biased orthologs are enriched for evidence of positive selection in the D. melanogaster group. There are more male-biased genes than female-biased genes in both species. For orthologs with gains/losses of sex-bias between the two species, there is an excess of male-bias compared to female-bias, but there is no consistent pattern in the relationship between H3K4me3 or H3K27me2me3 chromatin marks and expression. These data suggest chromatin state is a component of the maintenance of sex-biased expression and divergence of sex-bias between species is reflected in the complexity of the chromatin status.
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