| Texto completo | |
| Autor(es): |
Moreira, Camila N.
;
Pricoli, Fernanda G.
;
Ferguson-Smith, Malcolm A.
;
Yonenaga-Yassuda, Yatiyo
;
Ventura, Karen
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Cytogenetic and Genome Research; v. 164, n. 2, p. 11-pg., 2024-10-01. |
| Resumo | |
Introduction: Rhipidomys is the second most specious and the most widespread genus of the tribe Thomasomyini. Chromosomal data have been an important tool in the taxonomy of the group that presents low variability of diploid number (2n) and highly variable fundamental numbers (FNs). Despite such diversity, the genus has been studied mainly by classical and banding cytogenetic techniques. Methods: This study performed a comparative study between R. emiliae (2n = 44, FN = 52), R. macrurus (2n = 44, FN = 49), R. nitela (2n = 50, FN = 71), and R. mastacalis (2n = 44, FN = 72) using chromosome painting probes of two Oryzomyini species. Results: Our analysis revealed pericentric inversion as the main rearrangement involved in the karyotype evolution of the group, although tandem fusions/fissions were also detected. In addition, we detected eight syntenic associations exclusive of the genus Rhipidomys, and three syntenic associations shared between species of the tribe Thomasomyini and Oryzomyini. Conclusion: Comparative cytogenetic analysis by ZOO-FISH on genus Rhipidomys supports a pattern of chromosomal rearrangement already suggested by comparative G-banding. However, the results suggest that karyotype variability in the genus could also involve the occurrence of an evolutionary new centromere. (AU) | |
| Processo FAPESP: | 09/54300-0 - Estudos de citogenetica comparativa e de sistematica filogenetica em roedores da tribo akodontini (cricetidae, sigmodontinae): o que pode ser revelado na era da citogenomica? |
| Beneficiário: | Karen Ventura |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 18/09553-6 - Análise genômica do roedor Holochilus sciureus (Cricetidae: Sigmodontinae: Oryzomyini) com ênfase na interface entre cromossomos B e sexuais |
| Beneficiário: | Camila do Nascimento Moreira |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |