Transcriptomics

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Long-term m5C methylome dynamics parallel phenotypic adaptation in the cyanobacterium Trichodesmium [RNA-seq]


ABSTRACT: Our paper presents the results of a study in which we used whole genome bisulfite sequencing (WGBS) and RNA-Seq (i.e. transcriptomics) to examine the long-term epigenomic dynamics of an experimenta evolution study under high CO2 in the marine cyanobacterium Trichodesmium. We identify m5C methylated sites that rapidly change in response to short-term high CO2 exposure, which are then maintained for 4.5 years even after adaptation (i.e. trait canalization). After 7 years of CO2 selection, high-CO2 triggered methylation levels return to ancestral, low-CO2 levels, consistent with genetic assimilation theory and observations in eukaryotic model systems. These data suggest a potential role for m5C methylation in prokaryotic trait canalization and identify genetic assimilation as an evolutionary mechanism of potential biogeochemical importance under global change factors.

ORGANISM(S): Trichodesmium erythraeum IMS101

PROVIDER: GSE138171 | GEO | 2020/08/18

REPOSITORIES: GEO

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