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Avian comparative genomics: reciprocal chromosome painting between domestic chicken (Gallus gallus) and the stone curlew (Burhinus oedicnemus, Charadriiformes)—An atypical species with low diploid number
- Source :
- Chromosome Research. 17:99-113
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- The chicken is the most extensively studied species in birds and thus constitutes an ideal reference for comparative genomics in birds. Comparative cytogenetic studies indicate that the chicken has retained many chromosome characters of the ancestral avian karyotype. The homology between chicken macrochromosomes (1–9 and Z) and their counterparts in more than 40 avian species of 10 different orders has been established by chromosome painting. However, the avian homologues of chicken micro-chromosomes remain to be defined. Moreover, no reciprocal chromosome painting in birds has been performed due to the lack of chromosome-specific probes from other avian species. Here we have generated a set of chromosome-specific paints using flow cytometry that cover the whole genome of the stone curlew (Burhinus oedicnemus, Charadriiformes), a species with one of the lowest diploid number so far reported in birds, as well as paints from more microchromosomes of the chicken. A genome-wide comparative map between the chicken and the stone curlew has been constructed for the first time based on reciprocal chromosome painting. The results indicate that extensive chromosome fusions underlie the sharp decrease in the diploid number in the stone curlew. To a lesser extent, chromosome fissions and inversions occurred also during the evolution of the stone curlew. It is anticipated that this complete set of chromosome painting probes from the first Neoaves species will become an invaluable tool for avian comparative cytogenetics.
- Subjects :
- Charadriiformes
medicine.medical_specialty
Embryo, Nonmammalian
animal structures
Zoology
Article
Chromosome Painting
Evolution, Molecular
Species Specificity
Genetics
medicine
Animals
In Situ Hybridization, Fluorescence
Genome
biology
Cytogenetics
Chromosome
Karyotype
Genomics
biology.organism_classification
Diploidy
Microchromosome
Female
Ploidy
Burhinus
Neoaves
Chickens
Subjects
Details
- ISSN :
- 15736849 and 09673849
- Volume :
- 17
- Database :
- OpenAIRE
- Journal :
- Chromosome Research
- Accession number :
- edsair.doi.dedup.....2fa8610047cf931391528249f0e45d18