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Genome-wide association study dissects the genetic architecture of oil biosynthesis in maize kernels

Nature Genetics, ISSN: 1061-4036, Vol: 45, Issue: 1, Page: 43-50
2013
  • 648
    Citations
  • 0
    Usage
  • 565
    Captures
  • 1
    Mentions
  • 34
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    648
  • Captures
    565
  • Mentions
    1
    • News Mentions
      1
      • 1
  • Social Media
    34
    • Shares, Likes & Comments
      34
      • Facebook
        34

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Article Description

Maize kernel oil is a valuable source of nutrition. Here we extensively examine the genetic architecture of maize oil biosynthesis in a genome-wide association study using 1.03 million SNPs characterized in 368 maize inbred lines, including 'high-oil' lines. We identified 74 loci significantly associated with kernel oil concentration and fatty acid composition (P < 1.8 × 10 -6), which we subsequently examined using expression quantitative trait loci (QTL) mapping, linkage mapping and coexpression analysis. More than half of the identified loci localized in mapped QTL intervals, and one-third of the candidate genes were annotated as enzymes in the oil metabolic pathway. The 26 loci associated with oil concentration could explain up to 83% of the phenotypic variation using a simple additive model. Our results provide insights into the genetic basis of oil biosynthesis in maize kernels and may facilitate marker-based breeding for oil quantity and quality. © 2013 Nature America, Inc. All rights reserved.

Bibliographic Details

Li, Hui; Peng, Zhiyu; Yang, Xiaohong; Wang, Weidong; Fu, Junjie; Wang, Jianhua; Han, Yingjia; Chai, Yuchao; Guo, Tingting; Yang, Ning; Liu, Jie; Warburton, Marilyn L; Cheng, Yanbing; Hao, Xiaomin; Zhang, Pan; Zhao, Jinyang; Liu, Yunjun; Wang, Guoying; Li, Jiansheng; Yan, Jianbing

Springer Science and Business Media LLC

Biochemistry, Genetics and Molecular Biology

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