Chicken domestication: an updated perspective based on mitochondrial genomes
Autor: | Yong-Wang Miao, Mumtaz Baig, Malliya Gounder Palanichamy, Kong Qp, Albano Beja-Pereira, Min-Sheng Peng, Gui-Sheng Wu, Liang Jp, Shen Yy, Pianchou G, Yang Zy, Bikash Mitra, Yong-Gang Yao, Ya-Ping Zhang, Tapas Kumar Chaudhuri, Ouyang Yn, Robert W. Murphy, Yu N |
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Jazyk: | angličtina |
Rok vydání: | 2012 |
Předmět: |
Mitochondrial DNA
animal structures Molecular Sequence Data Biology Breeding Red junglefowl DNA Mitochondrial Haplogroup Chromosomes 03 medical and health sciences Phylogenetics Genetic variation Genetics biology.domesticated_animal Animals Domestication Genetics (clinical) Asia Southeastern Phylogeny 030304 developmental biology 0303 health sciences Genetic diversity Base Sequence Haplotype 0402 animal and dairy science Genetic Variation 04 agricultural and veterinary sciences Sequence Analysis DNA 040201 dairy & animal science Phylogeography Haplotypes Evolutionary biology Genome Mitochondrial Original Article Chickens |
Zdroj: | Heredity |
Popis: | Domestic chickens (Gallus gallus domesticus) fulfill various roles ranging from food and entertainment to religion and ornamentation. To survey its genetic diversity and trace the history of domestication, we investigated a total of 4938 mitochondrial DNA (mtDNA) fragments including 2843 previously published and 2095 de novo units from 2044 domestic chickens and 51 red junglefowl (Gallus gallus). To obtain the highest possible level of molecular resolution, 50 representative samples were further selected for total mtDNA genome sequencing. A fine-gained mtDNA phylogeny was investigated by defining haplogroups A–I and W–Z. Common haplogroups A–G were shared by domestic chickens and red junglefowl. Rare haplogroups H–I and W–Z were specific to domestic chickens and red junglefowl, respectively. We re-evaluated the global mtDNA profiles of chickens. The geographic distribution for each of major haplogroups was examined. Our results revealed new complexities of history in chicken domestication because in the phylogeny lineages from the red junglefowl were mingled with those of the domestic chickens. Several local domestication events in South Asia, Southwest China and Southeast Asia were identified. The assessment of chicken mtDNA data also facilitated our understanding about the Austronesian settlement in the Pacific. |
Databáze: | OpenAIRE |
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