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• W4365998001 endingPage "2901" @default.
• W4365998001 startingPage "2883" @default.
• W4365998001 abstract "Abstract Gene duplication is a source of evolutionary novelty. DNA methylation may play a role in the evolution of duplicate genes (paralogs) through its association with gene expression. While this relationship has been examined to varying extents in a few individual species, the generalizability of these results at either a broad phylogenetic scale with species of differing duplication histories or across a population remains unknown. We applied a comparative epigenomic approach to 43 angiosperm species across the phylogeny and a population of 928 Arabidopsis (Arabidopsis thaliana) accessions, examining the association of DNA methylation with paralog evolution. Genic DNA methylation was differentially associated with duplication type, the age of duplication, sequence evolution, and gene expression. Whole-genome duplicates were typically enriched for CG-only gene body methylated or unmethylated genes, while single-gene duplications were typically enriched for non-CG methylated or unmethylated genes. Non-CG methylation, in particular, was a characteristic of more recent single-gene duplicates. Core angiosperm gene families were differentiated into those which preferentially retain paralogs and “duplication-resistant” families, which convergently reverted to singletons following duplication. Duplication-resistant families that still have paralogous copies were, uncharacteristically for core angiosperm genes, enriched for non-CG methylation. Non-CG methylated paralogs had higher rates of sequence evolution, higher frequency of presence–absence variation, and more limited expression. This suggests that silencing by non-CG methylation may be important to maintaining dosage following duplication and be a precursor to fractionation. Our results indicate that genic methylation marks differing evolutionary trajectories and fates between paralogous genes and have a role in maintaining dosage following duplication." @default.
• W4365998001 created "2023-04-17" @default.
• W4365998001 creator A5003193150 @default.
• W4365998001 creator A5028714300 @default.
• W4365998001 creator A5031536173 @default.
• W4365998001 date "2023-04-15" @default.
• W4365998001 modified "2023-09-26" @default.
• W4365998001 title "DNA methylation signatures of duplicate gene evolution in angiosperms" @default.
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