首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Chicken domestication: an updated perspective based on mitochondrial genomes
Authors:Y-W Miao  M-S Peng  G-S Wu  Y-N Ouyang  Z-Y Yang  N Yu  J-P Liang  G Pianchou  A Beja-Pereira  B Mitra  M G Palanichamy  M Baig  T K Chaudhuri  Y-Y Shen  Q-P Kong  R W Murphy  Y-G Yao  Y-P Zhang
Abstract: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.
Keywords:chicken  mtDNA  domestication  phylogeny  Austronesian
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号