The wild species genome ancestry of domestic chickens

	The wild species genome ancestry of domestic chickens
	Lawal, Raman Akinyanju; Martin, Simon H.; Vanmechelen, Koen; Vereijken, Addie; Silva, Pradeepa; Al-Atiyat, Raed Mahmoud; Aljumaah, Riyadh Salah; Mwacharo, Joram M.; Wu, Dong-Dong; Zhang, Ya-Ping; Hocking, Paul M.; Smith, Jacqueline; Wragg, David; Hanotte, Olivier
	2020
发表期刊	BMC BIOLOGY
卷号	18 期号:1
摘要	Background Hybridisation and introgression play key roles in the evolutionary history of animal species. They are commonly observed within several orders in wild birds. The domestic chicken Gallus gallus domesticus is 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. Results In this study, we report genome-wide analyses for signatures of introgression between indigenous domestic village chicken and the four wild Gallus species. We first assess the genome-wide phylogeny and divergence time across the genus Gallus. Genome-wide sequence divergence analysis supports a sister relationship between the Grey junglefowl G. sonneratii and Ceylon junglefowl G. lafayettii. Both species form a clade that is sister to the Red junglefowl G. gallus, with the Green junglefowl G. varius the 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. Conclusions Our 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.
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/12720
专题	科研部门_分子进化与基因组多样性（张亚平）
推荐引用方式 GB/T 7714	Lawal, Raman Akinyanju,Martin, Simon H.,Vanmechelen, Koen,et al. The wild species genome ancestry of domestic chickens[J]. BMC BIOLOGY,2020,18(1).
APA	Lawal, Raman Akinyanju.,Martin, Simon H..,Vanmechelen, Koen.,Vereijken, Addie.,Silva, Pradeepa.,...&Hanotte, Olivier.(2020).The wild species genome ancestry of domestic chickens.BMC BIOLOGY,18(1).
MLA	Lawal, Raman Akinyanju,et al."The wild species genome ancestry of domestic chickens".BMC BIOLOGY 18.1(2020).

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