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Research: Genetic variation in recalcitrant repetitive regions of the Drosophila melanogaster genome
- Harsh G. Shukla,
- Mahul Chakraborty,
- and J.J. Emerson
Genome Res. September 2025 35: 2023-2040; Published in Advance July 16, 2025, doi:10.1101/gr.280728.125
...assembled histone locus in Drosophila melanogaster. (A) Overview of the structure of the histone locus. Top: Schematic illustration of the location of the histone locus relative to the rest of Chromosome 2L. Bottom: Map of location of elements in the histone cluster, including the five individual histone...
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Research: Rapid evolution of piRNA clusters in the Drosophila melanogaster ovary
- Satyam P. Srivastav,
- Cédric Feschotte,
- and Andrew G. Clark
Genome Res. May 2024 34: 711-724; Published in Advance May 15, 2024, doi:10.1101/gr.278062.123
...in Drosophila melanogaster, much less is known about the origin and evolution of piCs in this or any other species. To investigate piC origin and evolution, we use a population genomic approach to compare piC activity and sequence composition across eight geographically distant strains of D. melanogaster...
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Research: Variation in mutation, recombination, and transposition rates in Drosophila melanogaster and Drosophila simulans
- Yiguan Wang,
- Paul McNeil,
- Rashidatu Abdulazeez,
- Marta Pascual,
- Susan E. Johnston,
- Peter D. Keightley,
- and Darren J. Obbard
Genome Res. April 2023 33: 587-598; Published in Advance April 10, 2023, doi:10.1101/gr.277383.122
....6 cM/Mb (Hemmer et al. 2020), and D. melanogaster of 2.5 cM/Mb (Comeron et al. 2012). However, experimental studies of Drosophila have rarely looked at variation in -wide recombination rates in natural populations of outbred individuals, and wild populations may differ systematically from populations...
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Research: Transposable elements drive the evolution of metazoan zinc finger genes
- Jonathan N. Wells,
- Ni-Chen Chang,
- John McCormick,
- Caitlyn Coleman,
- Nathalie Ramos,
- Bozhou Jin,
- and Cédric Feschotte
Genome Res. August 2023 33: 1325-1339; Published in Advance September 15, 2023, doi:10.1101/gr.277966.123
...). This finding is consistent with previous functional studies of Drosophila ZAD-ZNFs (Kasinathan et al. 2020) and our observation that the copy number of dipteran ZNFs does not correlate with the number of TE copies (Supplemental Data 1). Notably, we also found that in all species both retroelements and DNA...
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Method: MCHelper automatically curates transposable element libraries across eukaryotic species
- Simon Orozco-Arias,
- Pío Sierra,
- Richard Durbin,
- and Josefa González
Genome Res. December 2024 34: 2256-2268; Published in Advance December 9, 2024, doi:10.1101/gr.278821.123
...(Supplemental Fig. S2).We then compared the MCHelper libraries (generated using CD-HIT as the clustering algorithm) with the available reference libraries: Berkeley Drosophila Genome Project (BDGP) (Kaminker et al. 2002) and Manual Curated TE (MCTE) libraries (Rech et al. 2022) for D. melanogaster, the manually...
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Research: Unexpectedly low recombination rates and presence of hotspots in termite genomes
- Turid Everitt,
- Tilman Rönneburg,
- Daniel Elsner,
- Anna Olsson,
- Yuanzhen Liu,
- Tuuli Larva,
- Judith Korb,
- and Matthew T. Webster
Genome Res. May 2025 35: 1124-1137; Published in Advance March 20, 2025, doi:10.1101/gr.279180.124
...of diverse taxa, including yeast, birds, and dogs (Axelsson et al. 2012; Berglund et al. 2015; Lam and Keeney 2015; Singhal et al. 2015). In insects, the prevalence of recombination hotspots is not well studied. Fine-scale recombination maps in the fruit fly Drosophila melanogaster and honey bee A. mellifera...
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Research: Cell-type- and chromosome-specific chromatin landscapes and DNA replication programs of Drosophila testis tumor stem cell–like cells
- Jennifer A. Urban,
- Daniel Ringwalt,
- John M. Urban,
- Wingel Xue,
- Ryan Gleason,
- Keji Zhao,
- and Xin Chen
Genome Res. January 2026 36: 83-101; Published in Advance December 10, 2025, doi:10.1101/gr.280809.125
...stem cells (CySCs), the Drosophila testis provides an excellent in vivo model for studying adult stem cells. However, the small number of stem cells and the cellular heterogeneity of this tissue have limited comprehensive genomic studies. In this study, we develop cell-type-specific genomic techniques...
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Research: Reactivation of transposable elements following hybridization in fission yeast
- Sergio Tusso,
- Fang Suo,
- Yue Liang,
- Li-Lin Du,
- and Jochen B.W. Wolf
Genome Res. February 2022 32: 324-336; Published in Advance December 14, 2021, doi:10.1101/gr.276056.121
...melanogaster males containing the P-element transposon with naive females lacking expression of the suppressor gene result in hybrid dysgenesis (Kidwell et al. 1977; Bingham et al. 1982; Kidwell 1983; Bucheton et al. 1984). In other species of Drosophila this effect cannot be consistently replicated (Coyne...
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Research: Experimentally evolving Drosophila erecta populations may fail to establish an effective piRNA-based host defense against invading P-elements
- Divya Selvaraju,
- Filip Wierzbicki,
- and Robert Kofler
Genome Res. March 2024 34: 410-425; Published in Advance March 15, 2024, doi:10.1101/gr.278706.123
...at the transcriptional and the post-transcriptional level (Brennecke et al. 2007; Gunawardane et al. 2007; Sienski et al. 2012; Le Thomas et al. 2013). Most piRNAs are derived from discrete genomic source loci, termed piRNA clusters (Brennecke et al. 2007). In Drosophila melanogaster about 142 clusters were found, which...
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Resource: Zebrafish transposable elements show extensive diversification in age, genomic distribution, and developmental expression
- Ni-Chen Chang,
- Quirze Rovira,
- Jonathan Wells,
- Cédric Feschotte,
- and Juan M. Vaquerizas
Genome Res. July 2022 32: 1408-1423; Published in Advance January 5, 2022, doi:10.1101/gr.275655.121
...such somatic expression facilitate transposition in the germline? One possibility is that somatic expression provides an indirect route for TEs to enter the germline; this has been observed during oogenesis in Drosophila melanogaster, where TEs expressed in support cells surrounding the oocytes either infect...
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