DNA methylation and sexual dimorphism: New insights from mealybugs
- PMID: 34687580
- DOI: 10.1111/mec.16243
DNA methylation and sexual dimorphism: New insights from mealybugs
Abstract
DNA methylation is an ancient epigenetic pathway found across eukaryotes. Nevertheless, the targets of DNA methylation within genomes evolve extremely rapidly. Arthropods display many such examples. The mealybug Planococcus citri has evolved methylation at promoter sequences, associated with gene silencing just as in mammals. In this issue of Molecular Ecology, Bain et al. (2021), thoroughly characterise mealybug methylation, exploring its potential functions in gene expression and the spectacular sexual dimorphism that is a characteristic of this species. Their results provide new insights into the complex relationship between DNA methylation and gene expression and highlight how rapidly different methylation systems can evolve.
Keywords: DNA methylation; conservation genetics; epigenetics; evolution of sex; gene structure and function; insects; life history evolution.
© 2021 The Authors. Molecular Ecology published by John Wiley & Sons Ltd.
Comment on
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Sex-specific expression and DNA methylation in a species with extreme sexual dimorphism and paternal genome elimination.Mol Ecol. 2021 Nov;30(22):5687-5703. doi: 10.1111/mec.15842. Epub 2021 Mar 12. Mol Ecol. 2021. PMID: 33629415
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