文献类型: 外文期刊
作者: Fu Nong Luo;Shu Jun Chen;Hojjat Asadollahpour Nanaei;Xin Yu Wang;Rasmus Heller;De Xiang Hu;Hong Cheng;Jie Li;Shi Heng Ni;Mao Li;Xue Lei Dai;Yu Jiang
作者机构:
关键词: CORIN gene;Genome-wide association studies;Haplotype diversity;Indicine cattle;Introgression
期刊名称: Zoological research
ISSN: 2095-8137
年卷期: 2025 年 46 卷 3 期
页码:
收录情况: SCIE(2025版) ; ; CSCD(2025-2026年度) ; ; 科技核心(2024版)
摘要: 家畜毛色变异为研究物种适应、驯化过程及遗传多样性提供了宝贵的模型。雷琼牛作为中国南方瘤牛的代表,群体以黄色被毛为主,部分个体则表现为纯黑色被毛。为揭示这一颜色变异的遗传基础,我们对212头雷琼公牛进行了全基因组关联分析(GWAS)。研究发现,在6号染色体上存在一个显著的基因组信号,位于 CORIN基因的第五内含子区域,这首次提供了 CORIN基因影响牛毛色变异的证据。通过整合我们的数据与公开数据集进行单倍型分析,我们发现黄色被毛可追溯至印度瘤牛的祖先,而黑色被毛则源于野生牛种的基因渗入以及与和牛的人工杂交。此外,通过比较不同毛色的印度瘤牛,我们观察到尽管它们具有相同的 CORIN基因背景,但 LEF1单倍型存在差异,揭示了毛色变异背后古老而复杂的驯化历史。我们的研究结果为基因渗入塑造东亚牛表型特征提供了直接证据,深化了对毛色变异的理解,并为未来的育种策略提供了指导。.
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