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The wild species genome ancestry of domestic chickens
- Source :
- Lawal, R A, Martin, S, Vanmechelen, K, Vereijken, A, Silva, P, Al-Atiyat, R M, Aljumaah, R S, Mwacharo, J M, Wu, D-D, Zhang, Y-P, Hocking, P, Smith, J, Wragg, D & Hanotte, O 2020, ' The wild species genome ancestry of domestic chickens ', BMC Biology . https://doi.org/10.1186/s12915-020-0738-1, BMC Biology, Vol 18, Iss 1, Pp 1-18 (2020), BMC Biology
- Publication Year :
- 2020
-
Abstract
- BackgroundHybridisation and introgression play key roles in the evolutionary history of animal species. They are commonly observed within several orders in wild birds. The domestic chickenGallus gallus domesticusis the most common livestock species. More than 65 billion chickens are raised annually to produce meat and 80 million metric tons of egg for global human consumption by the commercial sector. Unravelling the origin of its genetic diversity has major application for sustainable breeding improvement programmes.ResultsIn this study, we report genome-wide analyses for signatures of introgression between indigenous domestic village chicken and the four wildGallusspecies. We first assess the genome-wide phylogeny and divergence time across the genusGallus. Genome-wide sequence divergence analysis supports a sister relationship between the Grey junglefowlG. sonneratiiand Ceylon junglefowlG. lafayettii. Both species form a clade that is sister to the Red junglefowlG. gallus, with the Green junglefowlG. variusthe most ancient lineage within the genus. We reveal extensive bidirectional introgression between the Grey junglefowl and the domestic chicken and to a much lesser extent with the Ceylon junglefowl. We identify a single case of Green junglefowl introgression. These introgressed regions include genes with biological functions related to development and immune system.ConclusionsOur study shows that while the Red junglefowl is the main ancestral species, introgressive hybridisation episodes have impacted the genome and contributed to the diversity of the domestic chicken, although likely at different levels across its geographic range.
- Subjects :
- 0106 biological sciences
Physiology
Lineage (evolution)
Speciation
divergence time
Plant Science
Genome
01 natural sciences
Genetic diversity
Structural Biology
Gallus species
Galliformes
lcsh:QH301-705.5
Phylogeny
2. Zero hunger
0303 health sciences
biology
chicken domestication
genetic diversity
Biological Evolution
Ceylon junglefowl
Livestock species
Grey junglefowl
livestock species
interspecies hybridization
General Agricultural and Biological Sciences
Research Article
Biotechnology
animal structures
Evolution
Introgression
Zoology
Animals, Wild
Genetic Introgression
010603 evolutionary biology
Red junglefowl
General Biochemistry, Genetics and Molecular Biology
03 medical and health sciences
Phylogenetics
Interspecies hybridisation
evolution
biology.domesticated_animal
Animals
Chicken introgression
Divergence time
Domestication
Ecology, Evolution, Behavior and Systematics
030304 developmental biology
Green junglefowl
Chicken domestication
Cell Biology
15. Life on land
biology.organism_classification
lcsh:Biology (General)
speciation
Evolutionary biology
Chickens
Developmental Biology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Lawal, R A, Martin, S, Vanmechelen, K, Vereijken, A, Silva, P, Al-Atiyat, R M, Aljumaah, R S, Mwacharo, J M, Wu, D-D, Zhang, Y-P, Hocking, P, Smith, J, Wragg, D & Hanotte, O 2020, ' The wild species genome ancestry of domestic chickens ', BMC Biology . https://doi.org/10.1186/s12915-020-0738-1, BMC Biology, Vol 18, Iss 1, Pp 1-18 (2020), BMC Biology
- Accession number :
- edsair.doi.dedup.....d6a1d1d411704bc8ef8fbda5492ca053