文献类型： 外文期刊

作者： Yang, Peng ¹ ; Cai, Cuicui ¹ ; Niu, Mengxiao ¹ ; Liu, Xian ² ; Wang, Hongli ⁴ ; Liang, Huifeng ⁴ ; Cheng, Baowei ⁴ ; Zhang, Zijing ⁵ ; Chen, Fuying ⁵ ; Xie, Jianliang ³ ; Qi, Zengfang ⁴ ; Yang, Guojie ⁴ ; Shi, Qiaoting ⁵ ; Wang, Eryao ⁵ ; Lei, Chuzhao ¹ ; Chen, Hong ¹ ; Ru, Baorui ² ; Huang, Yongzhen ¹ ;

作者机构： 1.Northwest A&F Univ, Coll Anim Sci & Technol, 22 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China

2.Henan Prov Anim Husb Gen Stn, Zhengzhou 450008, Henan, Peoples R China

3.Ningxia Acad Agr & Forestry Sci, Guyuan Branch, Guyuan 756000, Ningxia, Peoples R China

4.Jiaxian Anim Husb Bur, Jiaxian 467100, Henan, Peoples R China

5.Henan Acad Agr Sci, Inst Anim Husb & Vet Sci, Zhengzhou 450002, Henan, Peoples R China

关键词： Copy number variation; Growth trait; Association analysis; Cattle

期刊名称：GENE （ 影响因子：3.913； 五年影响因子：3.48 ）

ISSN： 0378-1119

年卷期： 2022 年 809 卷

页码：

收录情况： SCI

摘要： Simple summary: As a member of genetic polymorphism, copy number variation has been a commonly used method in the world for investigating effect of genetic polymorphism on gene expression. Effect of genetic polymorphism made on livestock development has been more and more important in beef cattle molecular breeding. The characteristics of Chinese cattle are excellent meat quality, tolerant to rough feeding, good environmental adaptability and so on. But there are some obvious weaknesses still exist in the process of cattle growth and development, such as weak hindquarters and growth slowly. To improve the growth performance and market competitiveness of Chinese cattle, a lot of studies have been made about finding and investigating effective molecular marker. In this study, Q-PCR and data association analysis were used for PLA2G2A gene copy number variation detection and related effect analysis in Chinese cattle. Results showed that PLA2G2A gene has a significant effect on two breeds of Chinese cattle on growth traits, which could be a basic materials and effective information of cattle molecular markers breeding. PLA2G2A, member of secreted phospholipases A2 (sPLA2) in superfamily of phospholipase A2, could catalyze the process of glycerophospholipids hydrolysis from position of sn-2 acyl with the release of free fatty acids and lysophospholipids. Researches about PLA2G2A gene are mostly focus on disease, including tumors and diabetes, the number of study occurred on animal breeding is weak. In this study, blood samples were collected from five breeds of Chinese cattle (Qingchuan cattle, Xianan cattle, Yunling cattle, Pinan cattle and Guyuan cattle) for PLA2G2A gene CNV type detection. SPSS 20.0 software and method of ANOVA were used to analyzed the association between types of CNV and growth traits. Results reveal that the distribution of different copy number types in different cattle breeds is different. In QC, XN and GY cattle, the frequencies of Deletion and Duplication are about 40%; in YL cattle, the frequency of Deletion type exceeds 60%; in PN cattle, the frequency of Duplication is closed to 80%. Association analysis indicate that CNV of PLA2G2A gene showed a positive effect in cattle growth: in QC cattle, Chest depth with Normal type copy number possess a increased trend (P < 0.05); individuals with Deletion type copy number have better performance on Height at sacrum, Heart girth and Body height in GY cattle (P < 0.05). The functional role and molecular mechanism of PLA2G2A gene in animal growth and development are still unclear, and it is necessary for processing a further research. This research aims to provide basic materials for molecular breeding of Chinese cattle.