Chromosomal Analysis in Crotophaga ani (Aves, Cuculiformes) Reveals Extensive Genomic Reorganization and an Unusual Z-Autosome Robertsonian Translocation

Autor: Rebecca E. O’Connor, Gustavo Akira Toma, Edivaldo Herculano Corrêa de Oliveira, Ricardo José Gunski, Darren K. Griffin, Marcelo de Bello Cioffi, Thales Renato Ochotorena de Freitas, Rafael Kretschmer, Analía Del Valle Garnero
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Cells, Vol 10, Iss 4, p 4 (2021)
Cells
Volume 10
Issue 1
Repositório Digital do Instituto Evandro Chagas (Patuá)
Instituto Evandro Chagas (IEC)
instacron:IEC
ISSN: 2073-4409
Popis: This study was supported by Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq, Proc. PDE 204792/2018-5 and PQ 307382/2019-2), Funda??o de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS, 16/2551-000485-7) and the Biotechnology and Biological Sciences Research Council UK (BB/K008226/1). University of Kent. School of Biosciences. Canterbury, UK; Universidade Federal do Rio Grande do Sul. Instituto de Bioci?ncias. Departamento de Gen?tica. Laborat?rio de Citogen?tica e Evolu??o. Rio Grande do Sul, RS, Brazil. Universidade Federal do Pampa. Laborat?rio de Diversidade Gen?tica Animal. Rio Grande do Sul, RS, Brazil. Universidade Federal do Pampa. Laborat?rio de Diversidade Gen?tica Animal. Rio Grande do Sul, RS, Brazil. Universidade Federal do Rio Grande do Sul. Instituto de Bioci?ncias. Departamento de Gen?tica. Laborat?rio de Citogen?tica e Evolu??o. Rio Grande do Sul, RS, Brazil. Universidade Federal de S?o Carlos. Centro de Ci?ncias Biol?gicas e da Sa?de. Departamento de Gen?tica e Evolu??o. Laborat?rio de Citogen?tica de Peixes. S?o Carlos, SP, Brazil. Universidade Federal de S?o Carlos. Centro de Ci?ncias Biol?gicas e da Sa?de. Departamento de Gen?tica e Evolu??o. Laborat?rio de Citogen?tica de Peixes. S?o Carlos, SP, Brazil. Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Ananindeua, PA, Brasil / Universidade Federal do Par?. Instituto de Ci?ncias Exatas e Naturais. Bel?m, PA, Brazil. University of Kent. School of Biosciences. Canterbury, UK. University of Kent. School of Biosciences. Canterbury, UK. Abstract: Although cytogenetics studies in cuckoos (Aves, Cuculiformes) have demonstrated an interesting karyotype variation, such as variations in the chromosome morphology and diploid number, their chromosome organization and evolution, and relation with other birds are poorly understood. Hence, we combined conventional and molecular cytogenetic approaches to investigate chromosome homologies between chicken and the smooth-billed ani (Crotophaga ani). Our results demonstrate extensive chromosome reorganization in C. ani, with interchromosomal rearrangements involving macro and microchromosomes. Intrachromosomal rearrangements were observed in some macrochromosomes, including the Z chromosome. The most evolutionary notable finding was a Robertsonian translocation between the microchromosome 17 and the Z chromosome, a rare event in birds. Additionally, the simple short repeats (SSRs) tested here were preferentially accumulated in the microchromosomes and in the Z and W chromosomes, showing no relationship with the constitutive heterochromatin regions, except in the W chromosome. Taken together, our results suggest that the avian sex chromosome is more complex than previously postulated and revealed the role of microchromosomes in the avian sex chromosome evolution, especially cuckoos.
Databáze: OpenAIRE
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