Francisco J. Ruíz-Ruano

The complete genome of a songbird

Giulio Formenti, Nivesh Jain, Jack A Medico, Marco Sollitto et autres

Bird genomes are the smallest among amniotes; however, they remain challenging to assemble due to their structural complexity. This study presents a fully phased diploid telomere-to-telomere reference genome for the zebra finch (Taeniopygia guttata), a model organism for neuroscience and evolutionary genomics. …

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Evidence of two centromeres in the germline-restricted chromosome (GRC): insights from zebra finch lampbrush chromosomes

Olga Takki, Valeriia Volodkina, Nikolay Rubtsov, Kira Zadesenets et autres

Abstract The germline-restricted chromosome (GRC) of the zebra finch Taeniopygia guttata represents a well-established model of programmed DNA elimination in vertebrates. Although the DNA composition of the GRC, as well as elimination processes during spermatogenesis and early embryogenesis, have been characterised previously, …

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The germline-restricted chromosome orchestrates germ cell development in passerine birds

Niki Vontzou, Yifan Pei, Israel Campo-Bes, Wolfgang Forstmeier et autres

Abstract While the definition of germ cell fate has been extensively studied in model organisms, evolutionary innovations and mechanistic novelties may remain hidden in understudied systems. The phenomenon of programmed DNA elimination allows germ cells to acquire germline-restricted genes, offering a novel …

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Accumulation of a Biparentally Inherited Neptune Transposable Element in Natural Killifish Hybrids ( Fundulus diaphanus × F. heteroclitus )

Alexandre-James Roussel, Alexander Suh, Francisco J. Ruíz-Ruano, Anne‐Marie Dion‐Côté

Transposable elements (TEs) are abundant selfish genetic elements that can mobilize in their host genome, causing DNA damage, mutations, and chromosome rearrangements. TE silencing is thus critical, and is initiated by maternally loaded piRNAs, leading to their repression. Consistently, paternally inherited TEs …

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Germline-restricted chromosome of songbirds has different centromere compared to regular chromosomes

Jakub Rídl, Dmitrij Dedukh, Zuzana Halenková, Stephen A. Schlebusch et autres

Centromeres are an important part of chromosomes which direct chromosome segregation during cell division. Their modifications can therefore explain the unusual mitotic and meiotic behaviour of certain chromosomes, such as the germline-restricted chromosome (GRC) of songbirds. This chromosome is eliminated from somatic …

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Programmed DNA elimination drives rapid genomic innovation in two thirds of all bird species

Francisco J. Ruíz-Ruano, Stephen A. Schlebusch, Niki Vontzou, Hugo Moreno et autres

Abstract Bird genomes are among the most stable in terms of synteny and gene content across vertebrates. However, germline-restricted chromosomes (GRCs) represent a striking exception where programmed DNA elimination confines large-scale genomic changes to the germline. GRCs are known to occur in …

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A new piece in the repeatome puzzle of Triatominae bugs: The analysis of Triatoma rubrofasciata reveals the role of satellite DNAs in the karyotypic evolution of distinct lineages

Sebastián Pita, Pablo Mora, José Manuel Rico-Porras, Diogo Cavalcanti Cabral-de-Mello et autres

The genome of Triatoma rubrofasciata, a representative of the North American Triatomini lineage, was analysed to characterise its repetitive DNA content and satellite DNA (satDNA) organisation. Using RepeatExplorer2, we determined that repetitive elements comprise approximately 25% of the genome in a male …

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Accumulation of a biparentally-inherited Neptune transposable element in natural Killifish hybrids ( Fundulus diaphanus × F. heteroclitus )

Alexandre-James Roussel, Alexander Suh, Francisco J. Ruíz-Ruano, Anne‐Marie Dion‐Côté

Abstract Transposable elements (TEs) are abundant selfish genetic elements that can mobilize in their host genome, causing DNA damage, mutations and chromosome rearrangements. TE silencing is thus critical, and is initiated by maternally loaded piRNAs, leading to their repression. Consistently, paternally inherited …

ca, gb, de, se (code pays fourni par la source)

Germline-restricted chromosome of songbirds has different centromere compared to regular chromosomes

Jakub Rídl, Dmitrij Dedukh, Zuzana Halenková, Stephen A. Schlebusch et autres

Abstract Centromeres are an important part of chromosomes which direct chromosome segregation during cell division. Their modifications can therefore explain the unusual mitotic and meiotic behaviour of certain chromosomes, such as the germline-restricted chromosome (GRC) of songbirds. This chromosome is eliminated from …

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The B Chromosome of Pseudococcus viburni: A Selfish Chromosome that Exploits Whole-Genome Meiotic Drive

Isabelle Mifom Vea, Andrés G. de la Filia, Kamil S. Jaroň, Scott E.J Barlow et autres

Meiosis is generally a fair process: each chromosome has a 50% chance of being included into each gamete. However, meiosis can become aberrant with some chromosomes having a higher chance of making it into gametes than others. Yet, why and how such …

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The Complete Genome of a Songbird

Giulio Formenti, Nivesh Jain, Jack A Medico, Marco Sollitto et autres

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Irreproducible results and unsupported conclusions in Ahmad et al. [BMC genomics (2020) 21:656]

Francisco J. Ruíz-Ruano, Juan Pedro M. Camacho

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