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Mapping and functional characterization of structural variation in 1060 pig genomes
Liu Yang1,2, Hongwei Yin1, Lijing Bai1
1Key Laboratory of Livestock and Poultry Multi-Omics of MARA, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, Guangdong, China.
Genome Biology
|May 7, 2024
Summary
We created a comprehensive structural variation (SV) catalog for 1060 pigs, identifying thousands of genetic changes. This resource aids in understanding pig genome diversity, evolution, and trait development.
Area of Science:
- Genomics
- Animal Genetics
- Bioinformatics
Background:
- Structural variations (SVs) significantly influence complex phenotypes by altering large DNA sequences.
- Understanding SVs is crucial for livestock breeding and evolutionary studies.
Purpose of the Study:
- To establish a comprehensive catalog of structural variations (SVs) in the pig genome.
- To investigate the impact of SVs on pig breed diversity, ancestry, and economically important traits.
Main Methods:
- Whole-genome sequencing of 1060 pigs across 101 breeds.
- Identification and cataloging of various SV types (deletions, insertions, duplications, inversions).
- Analysis of SVs for breed ancestry estimation, gene duplication, and association with traits.
Main Results:
- A catalog of 100,000+ SVs was generated, covering 9.6% of the pig genome.
- SV data corroborated breed ancestry estimates and revealed breed-specific variations.
- Identified SVs associated with coat color (KIT gene), gene expression (MYO5A, ABCG2), and traits like loin muscle area (FADS3).
Conclusions:
- The SV catalog is a vital resource for pig genome research, including domestication and adaptive evolution studies.
- SVs play a significant role in shaping pig diversity and traits.
- Further research using this catalog can advance precision breeding and genetic improvement in pigs.
