Unknown

Dataset Information

0

Comparative genomics based on massive parallel transcriptome sequencing reveals patterns of substitution and selection across 10 bird species.


ABSTRACT: Next-generation sequencing technology provides an attractive means to obtain large-scale sequence data necessary for comparative genomic analysis. To analyse the patterns of mutation rate variation and selection intensity across the avian genome, we performed brain transcriptome sequencing using Roche 454 technology of 10 different non-model avian species. Contigs from de novo assemblies were aligned to the two available avian reference genomes, chicken and zebra finch. In total, we identified 6499 different genes across all 10 species, with approximately 1000 genes found in each full run per species. We found evidence for a higher mutation rate of the Z chromosome than of autosomes (male-biased mutation) and a negative correlation between the neutral substitution rate (d(S)) and chromosome size. Analyses of the mean d(N)/d(S) ratio (omega) of genes across chromosomes supported the Hill-Robertson effect (the effect of selection at linked loci) and point at stochastic problems with omega as an independent measure of selection. Overall, this study demonstrates the usefulness of next-generation sequencing for obtaining genomic resources for comparative genomic analysis of non-model organisms.

SUBMITTER: Kunstner A 

PROVIDER: S-EPMC2904817 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature

altmetric image

Publications

Comparative genomics based on massive parallel transcriptome sequencing reveals patterns of substitution and selection across 10 bird species.

Künstner Axel A   Wolf Jochen B W JB   Backström Niclas N   Whitney Osceola O   Balakrishnan Christopher N CN   Day Lainy L   Edwards Scott V SV   Janes Daniel E DE   Schlinger Barney A BA   Wilson Richard K RK   Jarvis Erich D ED   Warren Wesley C WC   Ellegren Hans H  

Molecular ecology 20100301


Next-generation sequencing technology provides an attractive means to obtain large-scale sequence data necessary for comparative genomic analysis. To analyse the patterns of mutation rate variation and selection intensity across the avian genome, we performed brain transcriptome sequencing using Roche 454 technology of 10 different non-model avian species. Contigs from de novo assemblies were aligned to the two available avian reference genomes, chicken and zebra finch. In total, we identified 6  ...[more]

Similar Datasets

| S-EPMC3131396 | biostudies-literature
| S-EPMC7803007 | biostudies-literature
| S-EPMC2882868 | biostudies-other
| S-EPMC6440167 | biostudies-literature
| S-EPMC7759463 | biostudies-literature
| S-EPMC11184840 | biostudies-literature
| S-EPMC4978890 | biostudies-other
| S-EPMC2920756 | biostudies-literature
| S-EPMC6457397 | biostudies-literature
| S-EPMC8081657 | biostudies-literature