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Almoro Scarpa

As seen in: PLOS, BioRxiv
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Articles

The impact of insertion bias into piRNA clusters on the invasion of transposable elements

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By Almoro Scarpa, Robert Kofler, Sarah A. Signor, Shashank Pritam
| BioRxiv
Abstract In our current understanding of transposable element (TE) invasions TEs move freely until they accidentally insert into a piRNA cluster. They are then silenced by the production of piRNA cognate to the TE. Under this model, one would expect that TEs might evolve to avoid piRNA clusters. Yet empirical observations show that some TEs, such as the P-element, insert into piRNA clusters preferentially.
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Unveiling the complete invasion history of D. melanogaster: three horizontal transfers of transposable elements in the last 30 years

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By Riccardo Pianezza, Almoro Scarpa, Anna Haider, Sarah A. Signor
| BioRxiv
Abstract Transposable elements (TEs) are repetitive sequences capable of mobilizing within genomes, exerting significant influence on evolution throughout the tree of life. Using a novel approach that does not require prior knowledge about the sequence of repeats, we identified three novel TE invasions in D. melanogaster: MLE spread between 1990-2000, Souslik between 2009-2012, and Transib1 between 2013-2016. We recapitulate prior findings, revealing that a total of 11 TEs invaded D.
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Spoink, a LTR retrotransposon, invaded D. melanogaster populations in the 1990s

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By Riccardo Pianezza, Institut für Populationsgenetik, Vetmeduni Vienna, Almoro Scarpa
| PLOS
Loading metrics Open Access Peer-reviewed Research Article Citation: Pianezza R, Scarpa A, Narayanan P, Signor S, Kofler R (2024) Spoink, a LTR retrotransposon, invaded D. melanogaster populations in the 1990s. PLoS Genet 20(3): e1011201. https://doi.org/10.1371/journal.pgen.1011201 Editor: Cédric Feschotte, Cornell University, UNITED STATES Received: November 28, 2023; Accepted: February 27, 2024; Published: March 26, 2024 Copyright: © 2024 Pianezza et al.
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