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Evolutionary and functional analysis of DNA methyltransferases in micro-eukaryotes: Insights from the model diatom Phaeodactylum tricornutum [RNA-seq]

ABSTRACT: Loss of DNA methylation is traditionally associated with transcriptional up-regulation of transposable elements. Here we describe for the first time expression changes upon loss of DNA methylation in diatoms using Phaeodactylum tricornutum as a model species. The loss of DNA methylation was obtained by generation of DNMT5 KOs, a divergent DNMT with SNF-like domains. Expression analysis confirm the loss of DNA methylation is associated with de-repression of transposable elements in Phaeodactylum tricornutum with indirect effects on protein coding genes.

ORGANISM(S): Phaeodactylum tricornutum

PROVIDER: GSE186856 | GEO | 2023/03/15

REPOSITORIES: GEO

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Evolutionary and functional analysis of DNA methyltransferases in micro-eukaryotes: Insights from the model diatom Phaeodactylum tricornutum [Bisulfite-Seq]

Project description:DNA methylation has been associated with transcriptional repression of transposable elements. Here we describe the first DNA methylation deficient cell line of a diatom by generating DNMT5:KOs in Phaeodactylum tricornutum. These data show the extend of the loss of DNA methylation in DNMT5:KOs compared to the reference strain. All DNA methylation is lost in DNMT5:KOs.

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