In:
Frontiers in Cell and Developmental Biology, Frontiers Media SA, Vol. 9 ( 2021-3-19)
Abstract:
Song learning in zebra finches ( Taeniopygia guttata ) is a prototypical example of a complex learned behavior, yet knowledge of the underlying molecular processes is limited. Therefore, we characterized transcriptomic (RNA-sequencing) and epigenomic (RRBS, reduced representation bisulfite sequencing; immunofluorescence) dynamics in matched zebra finch telencephalon samples of both sexes from 1 day post hatching (1 dph) to adulthood, spanning the critical period for song learning (20 and 65 dph). We identified extensive transcriptional neurodevelopmental changes during postnatal telencephalon development. DNA methylation was very low, yet increased over time, particularly in song control nuclei. Only a small fraction of the massive differential expression in the developing zebra finch telencephalon could be explained by differential CpG and CpH DNA methylation. However, a strong association between DNA methylation and age-dependent gene expression was found for various transcription factors (i.e., OTX2 , AR , and FOS ) involved in neurodevelopment. Incomplete dosage compensation, independent of DNA methylation, was found to be largely responsible for sexually dimorphic gene expression, with dosage compensation increasing throughout life. In conclusion, our results indicate that DNA methylation regulates neurodevelopmental gene expression dynamics through steering transcription factor activity, but does not explain sexually dimorphic gene expression patterns in zebra finch telencephalon.
Type of Medium:
Online Resource
ISSN:
2296-634X
DOI:
10.3389/fcell.2021.583555
DOI:
10.3389/fcell.2021.583555.s001
DOI:
10.3389/fcell.2021.583555.s002
DOI:
10.3389/fcell.2021.583555.s003
DOI:
10.3389/fcell.2021.583555.s004
DOI:
10.3389/fcell.2021.583555.s005
DOI:
10.3389/fcell.2021.583555.s006
DOI:
10.3389/fcell.2021.583555.s007
DOI:
10.3389/fcell.2021.583555.s008
DOI:
10.3389/fcell.2021.583555.s009
DOI:
10.3389/fcell.2021.583555.s010
DOI:
10.3389/fcell.2021.583555.s011
DOI:
10.3389/fcell.2021.583555.s012
DOI:
10.3389/fcell.2021.583555.s013
DOI:
10.3389/fcell.2021.583555.s014
DOI:
10.3389/fcell.2021.583555.s015
DOI:
10.3389/fcell.2021.583555.s016
DOI:
10.3389/fcell.2021.583555.s017
DOI:
10.3389/fcell.2021.583555.s018
DOI:
10.3389/fcell.2021.583555.s019
DOI:
10.3389/fcell.2021.583555.s020
DOI:
10.3389/fcell.2021.583555.s021
DOI:
10.3389/fcell.2021.583555.s022
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2021
detail.hit.zdb_id:
2737824-X
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