4.6 Article

Interspecies Chromosome Mapping in Caprimulgiformes, Piciformes, Suliformes, and Trogoniformes (Aves): Cytogenomic Insight into Microchromosome Organization and Karyotype Evolution in Birds

Journal

CELLS
Volume 10, Issue 4, Pages -

Publisher

MDPI
DOI: 10.3390/cells10040826

Keywords

avian cytogenomics; evolution; genome organization; FISH; chromosomal rearrangements

Categories

Funding

  1. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [PDE 204792/2018-5]
  2. Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS) [16/2551-000485-7]
  3. Biotechnology and Biological Sciences Research Council UK [BB/K008226/1]

Ask authors/readers for more resources

Interchromosomal rearrangements involving microchromosomes are rare in birds, predominantly found in certain orders. Our study on microchromosomes in different bird orders revealed conservation of ancestral microchromosomal syntenies in some species, while others showed chromosome reorganization.
Interchromosomal rearrangements involving microchromosomes are rare events in birds. To date, they have been found mostly in Psittaciformes, Falconiformes, and Cuculiformes, although only a few orders have been analyzed. Hence, cytogenomic studies focusing on microchromosomes in species belonging to different bird orders are essential to shed more light on the avian chromosome and karyotype evolution. Based on this, we performed a comparative chromosome mapping for chicken microchromosomes 10 to 28 using interspecies BAC-based FISH hybridization in five species, representing four Neoaves orders (Caprimulgiformes, Piciformes, Suliformes, and Trogoniformes). Our results suggest that the ancestral microchromosomal syntenies are conserved in Pteroglossus inscriptus (Piciformes), Ramphastos tucanus tucanus (Piciformes), and Trogon surrucura surrucura (Trogoniformes). On the other hand, chromosome reorganization in Phalacrocorax brasilianus (Suliformes) and Hydropsalis torquata (Caprimulgiformes) included fusions involving both macro- and microchromosomes. Fissions in macrochromosomes were observed in P. brasilianus and H. torquata. Relevant hypothetical Neognathae and Neoaves ancestral karyotypes were reconstructed to trace these rearrangements. We found no interchromosomal rearrangement involving microchromosomes to be shared between avian orders where rearrangements were detected. Our findings suggest that convergent evolution involving microchromosomal change is a rare event in birds and may be appropriate in cytotaxonomic inferences in orders where these rearrangements occurred.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available