Detection of selection signatures in South African Mutton Merino sheep using whole‐genome sequencing data

生物 繁殖 羊毛 生长激素受体 选择(遗传算法) 遗传学 基因 驯化 基因组 全基因组测序 生长激素 历史 激素 人工智能 考古 生物化学 计算机科学
作者
Zhengxi Liu,Chunyan Bai,Lulu Shi,Yu He,Mingyue Hu,Hao Sun,Hongyang Peng,Weining Lai,Shuyu Jiao,Zhongli Zhao,MA Hui-hai,Shouqing Yan
出处
期刊:Animal Genetics [Wiley]
卷期号:53 (2): 224-229 被引量:14
标识
DOI:10.1111/age.13173
摘要

The South African Mutton Merino (SAMM), a dual-purpose (meat and wool) sheep breed, is characterized by its excellent performance on growth, carcass traits and meat quality compared to other fine-wool Merino breeds. Nowadays, the SAMM breed has been widely used to cross with commercial and indigenous fine-wool or coarse-wool breeds to improve the growth and meat performance in many countries. To date, however, little is known about the genetic basis for its prominent characteristics. In this study, whole-genome sequences of 10 SAMM were sequenced and the selection signatures were analyzed together with those of 39 Australian Merino and Chinese Merino (wool-type Merino) by FST , iHS, and XP-EHH methods. In total, 313 genes in 277 regions were identified by at least 2 methods with the signal of selection and 21 of them were identified by all three methods. We highlighted a list of interesting genes, including GHR, LCORL, SMO, NCAPG, DCC, IBSP, PPARGC1A, PACRGL, PRDM5, XYLB, AHCYL2, TEFM, AFG1L, and FAM184B, which have been shown to be involved in growth, carcass traits, and meat quality by previous studies. Herein, GHR, encoding a transmembrane receptor for growth hormone, is the most notable one. We report the first study on selection signatures analysis of SAMM at whole-genome sequence level. These results provide new insights into the genetic mechanisms underlying the growth and carcass traits in SAMM.
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