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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade Estadual Paulista (UNESP) | - |
Autor(es): dc.contributor | Uppsala University | - |
Autor(es): dc.contributor | University of East Anglia | - |
Autor(es): dc.contributor | UGR - Univ de Granada | - |
Autor(es): dc.creator | Milani, Diogo [UNESP] | - |
Autor(es): dc.creator | Ruiz-Ruano, Francisco J. | - |
Autor(es): dc.creator | Camacho, Juan Pedro M. | - |
Autor(es): dc.creator | Cabral-de-Mello, Diogo C. [UNESP] | - |
Data de aceite: dc.date.accessioned | 2022-08-04T22:12:20Z | - |
Data de disponibilização: dc.date.available | 2022-08-04T22:12:20Z | - |
Data de envio: dc.date.issued | 2022-04-28 | - |
Data de envio: dc.date.issued | 2022-04-28 | - |
Data de envio: dc.date.issued | 2020-12-31 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1038/s41437-021-00470-5 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/222382 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/222382 | - |
Descrição: dc.description | In 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.description | Departamento de Biologia Geral e Aplicada UNESP - Univ Estadual Paulista Instituto de Biociências/IB | - |
Descrição: dc.description | Evolutionary Biology Centre Department of Organismal Biology – Systematic Biology Uppsala University | - |
Descrição: dc.description | Norwich Research Park School of Biological Sciences University of East Anglia | - |
Descrição: dc.description | Departamento de Genética Facultad de Ciencias UGR - Univ de Granada | - |
Descrição: dc.description | Departamento de Biologia Geral e Aplicada UNESP - Univ Estadual Paulista Instituto de Biociências/IB | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Heredity | - |
???dc.source???: dc.source | Scopus | - |
Título: dc.title | Out of patterns, the euchromatic B chromosome of the grasshopper Abracris flavolineata is not enriched in high-copy repeats | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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