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Genome sequence and assembly of Bos indicus
Flavio C Canavez1, Douglas D Luche, Paul Stothard
1Department of Molecular Biology, Genoa Biotecnologia SA, São Paulo, SP 04004-030, Brazil.
The Journal of Heredity
|February 9, 2012
Summary
This study presents the first genome sequence of an indicine cattle breed (Nellore), revealing high genetic similarity with taurine cattle genomes. This advances our understanding of cattle genetics and domestication.
Area of Science:
- Genomics
- Animal Science
- Comparative Genomics
Background:
- Cattle are categorized into taurine and indicine groups, crucial for human nutrition and subjected to artificial selection.
- Domestication has led to reduced genetic diversity within specialized cattle breeds.
- While the taurine cattle genome is available, indicine cattle genetic data remains limited.
Purpose of the Study:
- To present the first genome sequence of an indicine cattle breed (Nellore).
- To compare the Nellore genome with existing taurine cattle genome data.
- To enhance the understanding of cattle genetic diversity and evolutionary history.
Main Methods:
- Whole-genome sequencing of Nellore cattle using the SOLiD platform.
- Achieved 52X sequencing coverage.
- Compared the assembled indicine genome with taurine cattle genome data.
Main Results:
- High nucleotide-level similarity was observed between the Nellore (indicine) and taurine cattle genomes across autosomes and the X chromosome.
- Considerably lower homology was found for the Y chromosome, potentially due to assembly limitations in the taurine Y chromosome.
- Successfully covered 97% of the annotated taurine protein-coding genes.
Conclusions:
- The genome sequence provides a valuable resource for indicine cattle genetics.
- Comparative analysis deepens insights into cattle evolutionary divergence and domestication.
- This work bridges a critical gap in genomic information for indicine cattle breeds.
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