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2025年8月5日 星期二
农业生物技术学报  2019, Vol. 27 Issue (12): 2188-2197    DOI: 10.3969/j.issn.1674-7968.2019.12.010
  研究论文与报告 本期目录 | 过刊浏览 | 高级检索 |
山羊IGF-1基因的骨骼肌表达特性及其SNPs与生长性状的关联分析
李文杨, 刘远*, 吴贤锋, 黄勤楼
福建省农业科学院 畜牧兽医研究所,福州 350013
Skeletal Muscle Expression Characteristics of IGF-1 Gene and Its SNPs Association with Growth Traits in Goat (Capra hircus)
LI Wen-Yang, LIU Yuan*, WU Xian-Feng, HUANG Qin-Lou
Animal Husbandry and Veterinary Instiute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
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摘要 利用分子标记辅助选择技术能够加快肉羊生长性状选育的遗传进展,并提高选种的准确性。为了解山羊(Capra hircus)类胰岛素样生长因子-1基因(insulin-like growth factor-1, IGF-1)的骨骼肌表达特征、SNPs分布及其与山羊生长性状的关联性,本研究利用qRT-PCR技术分析IGF-1在福清山羊和努比亚黑山羊的咬肌、颈斜方肌、头颈半棘肌、臂三头肌、腕桡侧伸肌、背最长肌、腰大肌、股四头肌和臀股二头肌共9个骨骼肌组织中的表达水平,同时采用PCR产物直接测序和高分辨率熔解曲线(high-resolution melting, HRM)技术检测了IGF-1基因在福清山羊(n=124)、努比亚黑山羊(n=152)、简阳大耳羊(n=121)和戴云山羊(n=20)中的多态性及其与生长性状的关联性。结果表明,IGF-1基因在2个品种9个骨骼肌组织中均有表达,表达水平存在骨骼肌组织和品种的差异;该基因在福清山羊9个骨骼肌组织中的表达水平均低于努比亚黑山羊,该基因在咬肌、股四头肌的表达量在2品种间差异极显著(P<0.01),该基因在臂三头肌、颈斜方肌和背最长肌的表达量在2品种间差异显著(P<0.05)。IGF-1基因外显子序列高度保守,在福清山羊和努比亚黑山羊中均未发现突变位点。4个品种的3个SNPs位点多呈中度多态分布,PIC为0.18~0.38;3个SNPs位点多态性分布对山羊生长性状的影响存在明显的品种特异性,对简阳大耳羊和努比亚黑山羊的部分生长性状存在显著影响,而对福清山羊生长性状的影响较小。本研究结果揭示了IGF-1基因在福清山羊和努比亚黑山羊骨骼肌中的表达差异性,为进一步探索山羊的生长发育机制提供了基础数据;IGF-1基因的3个SNPs位点对山羊部分生长性状有显著影响,可以作为山羊生长性状分子标记辅助选择的候选标记。
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李文杨
刘远
吴贤锋
黄勤楼
关键词 类胰岛素样生长因子-1基因(IGF-1)SNPs生长性状福清山羊努比亚黑山羊    
Abstract:Major genes related to growth traits of goat (Capra hircus) were selected as marker assisted selection which can improve the accuracy of selection and accelerate breeding progress. The current study aimed to analyze gene expression characteristics of insulin-like growth factor-1 (IGF-1) gene in skeletal muscle, SNPs distribution and its association with growth traits of goats. qRT-PCR was used to analyze IGF-1 gene expression level in masseter, trapezius, semispinalis, arm triceps, extensor carpi radialis longus, longissimus dorsi, psoas, quadriceps femoris, biceps femoris of Fuqing goat and Nubia black goat. PCR sequencing and high-resolution melting (HRM) technologies were carried out to screen SNPs and analyzed their association with growth trait in Fuqing goat (n=124), Nubia black goat (n=152), Jianyang big ear goat (n=121), Daiyun goat (n=20). The results revealed that IGF-1 gene was expressed in 9 skeletal muscle tissues of Fuqing goat and Nubia black goat, and the expression level was different in skeletal muscle tissues and breeds. The expression level of IGF-1 gene in 9 skeletal muscle tissues of Fuqing goat was lower than that of Nubia black goat. The expression level of IGF-1 gene in masseter and quadriceps femoris was extremely significantly different between the 2 breeds (P<0.01), and the expression level of IGF-1 gene in arm triceps and trapezius and longissimus dorsi was significantly different between the 2 breeds (P<0.05). The exon sequence of IGF-1 gene was highly conserved, and no mutation was found in Fuqing goat and Nubia black goat. Most of the 3 SNPs of the 4 breeds showed moderate polymorphism distribution, PIC was 0.18~0.38; the 3 SNPs had obvious variety specificity on the growth traits of goats, and had significant influence on some growth traits of Jianyang big ear goat and Nubia black goat, but had little influence on the growth traits of Fuqing goat. The results of this study reveals the difference of IGF-1 gene expression in the skeletal muscles of Fuqing goat and Nubia black goat, and provides basic data for further exploring the mechanism of goat growth and development. The research results unveile that 3 SNPs within IGF-1 have strong effects on many growth traits of goats, which could be used as candidate markers for marker assisted selection of greater growth performance.
Key wordsInsulin-like growth factor-1 gene (IGF-1)    SNPs    Growth traits    Fuqing goat    Nubia black goat
收稿日期: 2019-07-01     
ZTFLH:  S828.2  
基金资助:福建省属公益类科研院所专项(No. 2018R1023-11)和福建省属公益类科研院所专项(No. 2017R1023-14)
通讯作者: * seayuan521@163.com   
引用本文:   
李文杨, 刘远, 吴贤锋, 黄勤楼. 山羊IGF-1基因的骨骼肌表达特性及其SNPs与生长性状的关联分析[J]. 农业生物技术学报, 2019, 27(12): 2188-2197.
LI Wen-Yang, LIU Yuan, WU Xian-Feng, HUANG Qin-Lou. Skeletal Muscle Expression Characteristics of IGF-1 Gene and Its SNPs Association with Growth Traits in Goat (Capra hircus). 农业生物技术学报, 2019, 27(12): 2188-2197.
链接本文:  
http://journal05.magtech.org.cn/Jwk_ny/CN/10.3969/j.issn.1674-7968.2019.12.010     或     http://journal05.magtech.org.cn/Jwk_ny/CN/Y2019/V27/I12/2188
 
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