TL;DR
Collectively, TEs and their multilayered epigenetic modifications jointly shape the asymmetric subgenome expression landscape of B. carinata, providing new insights into the establishment of subgenome dominance in allopolyploid plants.
DNA methylation is a major component of eukaryotic genomes with an important role in the defence against transposable elements, to transcriptionally silence their activity and prevent transposition. DNA methylation also plays a major role in the regulation of gene expression. This dual role can come into conflict, wher...
Transposable elements (TEs) are major contributors to genomic and regulatory variation and can influence the expression of nearby genes in response to environmental stress. The invasive fruit fly Drosophila suzukii, whose genome is composed of nearly 50% TE-derived sequences, provides an excellent model to investigate...
Transposable elements (TEs) are ubiquitous repetitive DNA sequences that can mobilise within genomes and may modulate gene expression in an environment-dependent manner. TEs and the safeguarding epigenetic machinery targeting them, can be tuned by environmental fluctuations to influence gene expression by inducing geno...
It is argued that while host silencing mechanisms, such as the piRNA pathway, tightly regulate TE activity to minimize harmful effects, the context-dependent activation of active TEs can generate beneficial genetic variation that enhances insect adaptations to anthropogenic and climatic pressures.
ABSTRACT An important question in evolutionary biology is how polyploidization generates raw material for phenotypic diversification. Transposable elements (TEs) represent an underestimated source of genetic variation in eukaryotic genomes. By integrating 516 whole‐genome resequencing datasets and 236 transcriptomes fr...
Metazoans suppress transposons via small RNA-mediated silencing mechanisms, whereas ciliates have evolved a unique repressed strategy by physically eliminating transposons during somatic macronuclear genome development, offering unique models for transposon regulation and programmed DNA rearrangement. The ciliate Param...
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