Comparative genomics in chicken and Pekin duck using FISH mapping and microarray analysis

Skinner, B., Robertson, L., Tempest, H., Langley, E., Ioannou, D., Fowler, K., Crooijmans, R., Hall, A., Griffin, D. and Völker, M. (2009) Comparative genomics in chicken and Pekin duck using FISH mapping and microarray analysis. BMC Genomics, 10 (1). p. 357. ISSN 1471-2164.

Full text not available from this repository.

Abstract

BACKGROUND: The availability of the complete chicken (Gallus gallus) genome sequence as well as a large number of chicken probes for fluorescent in-situ hybridization (FISH) and microarray resources facilitate comparative genomic studies between chicken and other bird species. In a previous study, we provided a comprehensive cytogenetic map for the turkey (Meleagris gallopavo) and the first analysis of copy number variants (CNVs) in birds. Here, we extend this approach to the Pekin duck (Anas platyrhynchos), an obvious target for comparative genomic studies due to its agricultural importance and resistance to avian flu. RESULTS: We provide a detailed molecular cytogenetic map of the duck genome through FISH assignment of 155 chicken clones. We identified one inter- and six intrachromosomal rearrangements between chicken and duck macrochromosomes and demonstrated conserved synteny among all microchromosomes analysed. Array comparative genomic hybridisation revealed 32 CNVs, of which 5 overlap previously designated "hotspot" regions between chicken and turkey. CONCLUSION: Our results suggest extensive conservation of avian genomes across 90 million years of evolution in both macro- and microchromosomes. The data on CNVs between chicken and duck extends previous analyses in chicken and turkey and supports the hypotheses that avian genomes contain fewer CNVs than mammalian genomes and that genomes of evolutionarily distant species share regions of copy number variation ("CNV hotspots"). Our results will expedite duck genomics, assist marker development and highlight areas of interest for future evolutionary and functional studies.

Item Type: Article
Divisions: pre Nov-2014 > Faculty of Social and Applied Sciences > Geographical and Life Sciences
Depositing User: Katie Fowler
Date Deposited: 24 Nov 2014 17:48
Last Modified: 11 Dec 2014 14:12
URI: https://create.canterbury.ac.uk/id/eprint/12933

Actions (login required)

Update Item (CReaTE staff only) Update Item (CReaTE staff only)

Downloads

Downloads per month over past year

View more statistics

Share

Connect with us

Last edited: 29/06/2016 12:23:00