畜牧兽医学报

• 遗传繁育 • 上一篇    下一篇

鸡胫长和胫围的全基因组关联分析

孙艳发1,2,刘冉冉2,郑麦青2,赵桂苹2,张磊2,吴丹2,胡耀东2,李鹏2,文杰1,2*   

  1. (1. 扬州大学动物科学与技术学院,扬州 225009; 2. 中国农业科学院北京畜牧兽医研究所, 北京 100193)
  • 收稿日期:2012-07-09 出版日期:2013-03-23 发布日期:2013-03-23
  • 通讯作者: 文杰,研究员,主要从事家禽育种研究,E-mail:wenjie@caas.cn
  • 作者简介:孙艳发(1981-),男,黑龙江哈尔滨人,博士,主要从事家禽营养与育种研究,E-mail:boysun2010@163.com
  • 基金资助:

    农业产业技术体系项目(nycytx-42); 中央级公益性科研院所基本科研业务费专项(2012ZL068);国家家养动物种质资源平台项目(2012)

Genome-wide Association Study on Shank Length and Shank Girth in Chicken

SUN Yan-fa1,2, LIU Ran-ran2, ZHENG Mai-qing2, ZHAO Gui-ping2, ZHANG Lei2, WU Dan2, HU Yao-dong2, LI Peng2, WEN Jie1,2*   

  1.   (1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; 2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China)
  • Received:2012-07-09 Online:2013-03-23 Published:2013-03-23

摘要:

为了揭示影响鸡胫生长的遗传基础和分子机制,本试验以中国农业科学院北京畜牧兽医研究所昌平试验基地鸡场鸡F2资源群体为基础,测定了F2代个体93日龄的体重、胫长和胫围,并利用60 K SNP芯片对个体基因组DNA进行分型,进行胫长和胫围的全基因组关联分析(GWAS)。结果表明,与鸡胫长和胫围达到5%全基因组水平显著关联位点分别为1个和4个(P<2.98×10-6),潜在关联位点分别为4个和25个(P<5.96×10-5)。其中1个SNP位点位于13号染色体上的NKX2-5基因的下游138 834 bp,另一个SNPs位于8号染色体ELAVL4基因的下游52 248 bp处。4号染色体14.93 Mb(71.01~85.94 Mb)区域多个SNPs位点与胫围显著或潜在关联。该区域内含有的LDB2、BOD1L1和QDPR等基因。这些基因和区域可作为影响胫长和胫围的重要候选区域和基因,为揭示胫生长的遗传基础和分子机制以及后期的分子标记辅助选择奠定了基础。

Abstract:

To reveal genetic basis and molecular mechanism affecting shank growth in chicken, live weight, shank length and shank girth of F2 generation individuals were measured at 93-day-old, these birds came from Chinese Academy of Agricultural Sciences (CAAS) chicken F2 rescoure population. Genomic DNA was genotyped using chicken 60 K SNP Beadchip. The genome-wide association study (GWAS) on shank length and shank girth were performed. The results showed that 1 and 4 SNPs were significantly associated with shank length and girth (P<2.98×10-6), respectively at 5% genome-wide level; 4 and 25 SNPs were suggestive associatied with the two traits (P<5.96×10-5), respectively. SNPs located at downstream of NKX2-5 and ELAVL4 on chromosome 13 and 8 were signficantly associated with shank length and girth, respectively at 5% genome-wide level. Many SNPs associated with shank length were in 14.93 Mb region (71.01-85.94 Mb) on chromosome 4, and LDB2, BOD1L1 and QDPR were in this region. These genes and regions could be important candidate genes and regions for shank length and girth. The results lay a foundation for revealing the genetic basis and molecular mechanism for shank growth and marker assisted selection in the further.

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