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- Title
A functional DNA methylation system in the pea aphid, Acyrthosiphon pisum.
- Authors
Walsh, T. K.; Brisson, J. A.; Robertson, H. M.; Gordon, K.; Jaubert-Possamai, S.; Tagu, D.; Edwards, O. R.
- Abstract
Methylation of cytosine is one of the main epigenetic mechanisms involved in controlling gene expression. Here we show that the pea aphid ( Acyrthosiphon pisum) genome possesses homologues to all the DNA methyltransferases found in vertebrates, and that 0.69% (±0.25%) of all cytosines are methylated. Identified methylation sites are predominantly restricted to the coding sequence of genes at CpG sites. We identify twelve methylated genes, including genes that interact with juvenile hormone, a key endocrine signal in insects. Bioinformatic prediction using CpG ratios for all predicted genes suggest that a large proportion of genes are methylated within the pea aphid.
- Subjects
PEA aphid; METHYLATION; GENE expression; GENOMES; METHYLTRANSFERASES
- Publication
Insect Molecular Biology, 2010, Vol 19, p215
- ISSN
0962-1075
- Publication type
Article
- DOI
10.1111/j.1365-2583.2009.00974.x