Out of patterns, the euchromatic B chromosome of the grasshopper Abracris flavolineata is not enriched in high-copy repeats

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUppsala University-
Autor(es): dc.contributorUniversity of East Anglia-
Autor(es): dc.contributorUGR - Univ de Granada-
Autor(es): dc.creatorMilani, Diogo [UNESP]-
Autor(es): dc.creatorRuiz-Ruano, Francisco J.-
Autor(es): dc.creatorCamacho, Juan Pedro M.-
Autor(es): dc.creatorCabral-de-Mello, Diogo C. [UNESP]-
Data de aceite: dc.date.accessioned2022-08-04T22:12:20Z-
Data de disponibilização: dc.date.available2022-08-04T22:12:20Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1038/s41437-021-00470-5-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222382-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222382-
Descrição: dc.descriptionIn addition to the normal set of standard (A) chromosomes, some eukaryote species harbor supernumerary (B) chromosomes. In most cases, B chromosomes show differential condensation with respect to A chromosomes and display dark C-bands of heterochromatin, and some of them are highly enriched in repetitive DNA. Here we perform a comprehensive NGS (next-generation sequencing) analysis of the repeatome in the grasshopper Abracris flavolineata aimed at uncovering the molecular composition and origin of its B chromosome. Our results have revealed that this B chromosome shows a DNA repeat content highly similar to the DNA repeat content observed for euchromatic (non-C-banded) regions of A chromosomes. Moreover, this B chromosome shows little enrichment for high-copy repeats, with only a few elements showing overabundance in B-carrying individuals compared to the 0B individuals. Consequently, the few satellite DNAs (satDNAs) mapping on the B chromosome were mostly restricted to its centromeric and telomeric regions, and they displayed much smaller bands than those observed on the A chromosomes. Our data support the intraspecific origin of the B chromosome from the longest autosome by misdivision, isochromosome formation, and additional restructuring, with accumulation of specific repeats in one or both B chromosome arms, yielding a submetacentric B. Finally, the absence of B-specific satDNAs, which are frequent in other species, along with its euchromatic nature, suggest that this B chromosome arose recently and might still be starting a heterochromatinization process. On this basis, it could be a good model to investigate the initial steps of B chromosome evolution.-
Descrição: dc.descriptionDepartamento de Biologia Geral e Aplicada UNESP - Univ Estadual Paulista Instituto de Biociências/IB-
Descrição: dc.descriptionEvolutionary Biology Centre Department of Organismal Biology – Systematic Biology Uppsala University-
Descrição: dc.descriptionNorwich Research Park School of Biological Sciences University of East Anglia-
Descrição: dc.descriptionDepartamento de Genética Facultad de Ciencias UGR - Univ de Granada-
Descrição: dc.descriptionDepartamento de Biologia Geral e Aplicada UNESP - Univ Estadual Paulista Instituto de Biociências/IB-
Idioma: dc.languageen-
Relação: dc.relationHeredity-
???dc.source???: dc.sourceScopus-
Título: dc.titleOut of patterns, the euchromatic B chromosome of the grasshopper Abracris flavolineata is not enriched in high-copy repeats-
Tipo de arquivo: dc.typelivro digital-
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