Among the multitude of papers published yearly in scientific journals, precious few publications may be worth looking back in half a century to appreciate the significance of the discoveries that would later become common knowledge and get a chance to shape a field or several adjacent fields. Here, Kimura's fundamental concept of neutral mutation-random drift, which was published 50 years ago, is re-examined in light of its pervasive influence on comparative genomics and, more specifically, on the contribution of transposable elements to eukaryotic genome evolution.
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| http://dx.doi.org/10.1093/molbev/msy083 | DOI Listing |
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An atlas of transcription initiation reveals regulatory principles of gene and transposable element expression in early mammalian development.
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Institute of Epigenetics and Stem Cells, Helmholtz Munich, Munich, Germany; Faculty of Biology, Ludwig-Maximilians Universität, Munich, Germany. Electronic address:
Transcriptional activation of the embryonic genome (EGA) is a major developmental landmark enabling the embryo to become independent from maternal control. The magnitude and control of transcriptional reprogramming during this event across mammals remains poorly understood. Here, we developed Smart-seq+5' for high sensitivity, full-length transcript coverage and simultaneous capture of 5' transcript information from single cells and single embryos.
View Article and Find Full Text PDFAlternative silencing states of transposable elements in Arabidopsis associated with H3K27me3.
Genome Biol
January 2025
Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, Centre National de La Recherche Scientifique (CNRS), Commissariat À L'EnergieAtomique (CEA), Gif-Sur-Yvette, 91190, France.
Background: The DNA/H3K9 methylation and Polycomb-group proteins (PcG)-H3K27me3 silencing pathways have long been considered mutually exclusive and specific to transposable elements (TEs) and genes, respectively in mammals, plants, and fungi. However, H3K27me3 can be recruited to many TEs in the absence of DNA/H3K9 methylation machinery and sometimes also co-occur with DNA methylation.
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J Infect Dev Ctries
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Department of Medical Microbiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey.
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View Article and Find Full Text PDFLocally Specific Genome-Wide Signatures of Adaptation to Environmental Variation at High Resolution in an Alpine Plant.
Mol Ecol
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Swiss Federal Research Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland.
Microevolutionary processes shape adaptive responses to heterogeneous environments, where these effects vary both among and within species. However, it remains largely unknown to which degree signatures of adaptation to environmental drivers can be detected based on the choice of spatial scale and genomic marker. We studied signatures of local adaptation across two levels of spatial extents, investigating complementary types of genomic variants-single-nucleotide polymorphisms (SNPs) and polymorphic transposable elements (TEs)-in populations of the alpine model plant species Arabis alpina .
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