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Research: Transposable elements contribute to the evolution of host shift–related genes in cactophilic Drosophila species
- Daniel Siqueira de Oliveira,
- Anaïs Larue,
- William Vilas Boas Nunes,
- Francois Sabot,
- Alejandra Bodelón,
- María Pilar García Guerreiro,
- Cristina Vieira,
- and Claudia Marcia Aparecida Carareto
Genome Res. March 2026 36: 487-505; Published in Advance February 10, 2026, doi:10.1101/gr.280463.125
..., in which gene families with functions associated with host localization, acceptance, and usage are proposed to evolve. In this context, cactophilic Drosophila species serve as an excellent model to study host shift evolution, because they use a wide range of cacti as hosts, and many species display...
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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
...on mutational processes shaping two functionally important tandem arrays in the Drosophila .ResultsGenome assembliesThe strains selected include the Drosophila community's reference strain (iso-1) (Adams et al. 2000) and two strains from the Drosophila Synthetic Population Resource (A3 and A4) (King et al. 2012...
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Research: Polycomb misregulation in enterocytes drives tissue decline in the aging Drosophila intestine
- Sarah M. Leichter,
- Kami Ahmad,
- and Steven Henikoff
Genome Res. January 2026 36: 102-114; Published in Advance November 17, 2025, doi:10.1101/gr.281058.125
..., the Polycomb landscape of differentiated cell types remains unexplored. Differentiated cells comprise the majority of the gut epithelium and directly impact both tissue and whole organismal aging. Using single-cell chromatin profiling of the Drosophila intestine, we identify cell type–specific chromatin...
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Method: High-resolution spatial transcriptomics in fixed tissue using a cost-effective PCL-seq workflow
- Xue Dong,
- Mengzhu Hu,
- Xiaonan Cui,
- Wenjian Zhou,
- Jingtao Cai,
- Guangyao Mao,
- and Weiyang Shi
Genome Res. September 2025 35: 2052-2063; Published in Advance August 5, 2025, doi:10.1101/gr.279906.124
...of molecules in illuminated regions.Establishment of PCL-seq for ROI-specific expression profilingWith these optimizations, we developed PCL-seq for spatial transcriptome analysis. Experimentally, the process began with RT primers modified with PC linkers to perform in situ reverse transcription on fixed...
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Research: Timescale and genetic linkage explain the variable impact of defense systems on horizontal gene transfer
- Yang Liu,
- João Botelho,
- and Jaime Iranzo
Genome Res. February 2025 35: 268-278; Published in Advance January 10, 2025, doi:10.1101/gr.279300.124
..., against which bacteria have evolved an elaborate repertoire of defense systems (Doron et al. 2018; Botelho et al. 2023; Georjon and Bernheim 2023; Mayo-Muñoz et al. 2023; Shaw et al. 2023). As a result, large-scale patterns of HGT are shaped by an interplay of ecological and genetic variables...
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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: 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
...is thought to be a key contributor to their differentiation potential. However, its precise roles in in vivo stem-cell systems remain to be fully elucidated.The Drosophila male germline is a well-established model for studying stem-cell biology with well-defined cell lineages and differentiation programs...
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Research: Cellular abundance shapes function in piRNA-guided genome defense
- Pavol Genzor,
- Parthena Konstantinidou,
- Daniel Stoyko,
- Amirhossein Manzourolajdad,
- Celine Marlin Andrews,
- Alexandra R. Elchert,
- Constantinos Stathopoulos,
- and Astrid D. Haase
Genome Res. November 2021 31: 2058-2068; Published in Advance October 19, 2021, doi:10.1101/gr.275478.121
...:eFH-piwi cells and associated reagents are being deposited at the Drosophila Genomics Resource Center (DGRC). We characterized eF-Piwi-piRNAs and established that they matched Piwi-piRNAs with respect to their length profile, genomic origin, and targeting potential (Marlin Andrews et al. 2020). The presence...
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Research: Contiguous and complete assemblies of Blastocystis gut microbiome–associated protists reveal evolutionary diversification to host ecology
- Abigail L. Lind,
- Nathan A. McDonald,
- Elias R. Gerrick,
- Ami S. Bhatt,
- and Katherine S. Pollard
Genome Res. June 2025 35: 1377-1390; Published in Advance April 22, 2025, doi:10.1101/gr.279080.124
.... Thus, we lack highly complete and well-annotated s necessary for establishing cases of gene loss, horizontal transfer, and sequence evolution so that functional repertoires can be associated with strain diversification.Like most host-associated eukaryotes, Blastocystis grows best in the presence...
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Resource: Binding profiles for 961 Drosophila and C. elegans transcription factors reveal tissue-specific regulatory relationships
- Michelle Kudron,
- Louis Gevirtzman,
- Alec Victorsen,
- Bridget C. Lear,
- Jiahao Gao,
- Jinrui Xu,
- Swapna Samanta,
- Emily Frink,
- Adri Tran-Pearson,
- Chau Huynh,
- Dionne Vafeados,
- Ann Hammonds,
- William Fisher,
- Martha Wall,
- Greg Wesseling,
- Vanessa Hernandez,
- Zhichun Lin,
- Mary Kasparian,
- Kevin White,
- Ravi Allada,
- Mark Gerstein,
- LaDeana Hillier,
- Susan E. Celniker,
- Valerie Reinke,
- and Robert H. Waterston
Genome Res. December 2024 34: 2319-2334; Published in Advance October 22, 2024, doi:10.1101/gr.279037.124
...C. elegans and the fruit fly Drosophila melanogaster were selected for the modENCODE Project in 2007 because of their experimental strengths and prominence as model organisms as well as for their compact, sequenced s, which simplifies the identification of TF binding sites and candidate target genes...

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