Chromosomal Evolution of Suboscines: Karyotype Diversity and Evolutionary Trends in Ovenbirds (Passeriformes, Furnariidae).

Autor:	Tura V; Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil., Kretschmer R; Departamento de Ecologia, Zoologia e Genética, Instituto de Biologia, Universidade Federal de Pelotas, Pelotas, Brazil., Sassi FMC; Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, Brazil., de Moraes RLR; Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, Brazil., Barcellos SA; Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil., de Rosso VO; Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil., de Souza MS; Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil., Cioffi MB; Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, Brazil., Gunski RJ; Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil., Garnero ADV; Laboratório de Diversidade Genética Animal, Universidade Federal do Pampa, São Gabriel, Brazil.
Jazyk:	angličtina
Zdroj:	Cytogenetic and genome research [Cytogenet Genome Res] 2022; Vol. 162 (11-12), pp. 644-656. Date of Electronic Publication: 2023 Mar 30.
DOI:	10.1159/000530428
Abstrakt:	Furnariidae (ovenbirds) is one of the most diversified families in the Passeriformes order and Suboscines suborder. Despite the great diversity of species, cytogenetic research is still in its early stages, restricting our knowledge of their karyotype evolution. We combined traditional and molecular cytogenetic analyses in three representative species, Synallaxis frontalis, Syndactyla rufosuperciliata, and Cranioleuca obsoleta, to examine the chromosomal structure and evolution of ovenbirds. Our findings revealed that all the species studied had the same diploid number (2n = 82). Differences in chromosomal morphology of some macrochromosomes indicate the presence of intrachromosomal rearrangements. Although the three species only had the 18S rDNA on one microchromosome pair, chromosomal mapping of six simple short repeats revealed a varied pattern of chromosome distribution among them, suggesting that each species underwent different repetitive DNA accumulation upon their divergence. The interspecific comparative genomic hybridization experiment revealed that the Furnariidae species investigated carry centromeric regions enriched in similar repetitive sequences, bolstering the Furnariidae family's karyotype conservation. Nonetheless, the outgroup species Turdus rufiventris (Turdidae) demonstrated an advanced stage of sequence divergence with hybridization signals that were almost entirely limited to a few microchromosomes. Overall, the findings imply that Furnariidae species have a high degree of chromosomal conservation, and we could also observe a differentiation of repetitive sequences in both Passeriformes suborders (Suboscines and Oscines). (© 2023 S. Karger AG, Basel.)
Databáze:	MEDLINE
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