Wang Lei, Guo Jiazhong, Xi Yang, Ma Shengchao, Li Yanying, He Hua, Wang Jiwen, Han Chunchun, Bai Lili, Mustafa Ahsan, Liu Hehe, Li Liang
Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, P.R. China.
Institute of Animal Nutrition, Key Laboratory for Animal Disease-Resistance Nutrition of China, Ministry of Education, Sichuan Agricultural University, Chengdu, P.R. China.
G3 (Bethesda). 2020 May 4;10(5):1469-1476. doi: 10.1534/g3.119.400893.
The Jianchang duck is mainly distributed in Southwest China, and has the characteristics of fast growth rate and strong abilities in lipid deposition in the liver. In order to investigate the effects of domestication process on formation of the unique characteristics of Jianchang duck, the whole genome of sixteen individuals and three pooling of Jianchang duck were re-sequenced, and genome data of 70 mallards and 83 domestic ducks from thirteen different places in China were obtained from NCBI. The population stratification and evolution analysis showed gene exchanges existed between the Jianchang and other domestic duck populations, as well as Jianchang ducks and mallards. Genomic comparison between mallards and Jianchang ducks showed genes, including , , and , which is involved in brain and nerve development, experienced strong positive selection in the process of Jianchang duck domestication. The genomic comparison between Jianchang and domestic duck populations showed that and , which affect lipid metabolism, experienced strong positive selection during the domestication process. analysis among populations of Jianchang duck with different plumage colors indicated that was related to the phenotype of a white feather, while was related to the phenotype of hemp feather. Our results provided a base for the domestication process of Jianchang duck and the genomic genes for unique traits.
建昌鸭主要分布于中国西南部，具有生长速度快和肝脏脂质沉积能力强的特点。为了研究驯化过程对建昌鸭独特性状形成的影响，对16只建昌鸭个体及3个混池样本进行了全基因组重测序，并从NCBI获取了来自中国13个不同地方的70只绿头鸭和83只家鸭的基因组数据。群体分层和进化分析表明，建昌鸭与其他家鸭群体以及绿头鸭之间存在基因交流。绿头鸭和建昌鸭的基因组比较显示，包括参与脑和神经发育的[具体基因未给出]在内的基因在建昌鸭驯化过程中经历了强烈的正选择。建昌鸭与家鸭群体的基因组比较表明，影响脂质代谢的[具体基因未给出]在驯化过程中经历了强烈的正选择。对不同羽色建昌鸭群体的[分析方法未给出]分析表明，[具体基因未给出]与白羽表型相关，而[具体基因未给出]与麻羽表型相关。我们的研究结果为建昌鸭的驯化过程以及独特性状的基因组基因提供了依据。
