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Updated: May 14, 2026
13:33
Infinium Assay for Large-scale SNP Genotyping Applications
Published on: November 19, 2013
Development and evaluation of SoySNP50K, a high-density genotyping array for soybean.
Qijian Song1, David L Hyten, Gaofeng Jia
1Soybean Genomics and Improvement Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland, United States of America.
Plos One
|February 2, 2013
Summary
Researchers developed the SoySNP50K BeadChip, a powerful tool for analyzing soybean genetic diversity. This chip identifies numerous single nucleotide polymorphisms (SNPs) crucial for understanding soybean domestication and improving crop traits.
Area of Science:
- Plant genetics
- Genomics
- Agricultural science
Background:
- Soybean (Glycine max L. Merr.) genetic diversity is crucial for crop improvement.
- High-throughput SNP discovery and genotyping are essential for modern plant breeding.
Purpose of the Study:
- To identify single nucleotide polymorphisms (SNPs) in soybean.
- To develop an Illumina Infinium BeadChip containing over 50,000 SNPs for soybean.
Main Methods:
- DNA sequence analysis of reduced representation libraries from cultivated and wild soybean genotypes.
- Bioinformatic filtering and selection algorithms for SNP candidates.
- Illumina Infinium BeadChip design and manufacturing (SoySNP50K).
Main Results:
- Identified 209,903 SNPs, with 146,161 selected as ideal candidates.
- Developed the SoySNP50K iSelect BeadChip with 52,041 SNPs.
- Validated the chip with 47,337 polymorphic SNPs and identified candidate regions for domestication and selection.
Conclusions:
- The SoySNP50K BeadChip is a valuable tool for soybean genetic diversity characterization.
- It facilitates linkage disequilibrium analysis and high-resolution linkage map construction.
- The chip aids in improving soybean whole genome sequence assembly and understanding crop evolution.
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