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A large-scale chromosome-specific SNP discovery guideline.

Bala Ani Akpinar1, Stuart Lucas1, Hikmet Budak2,3

  • 1Sabanci University Nanotechnology Research and Application Center (SUNUM), Sabanci University, Orhanlı, 34956, Tuzla, Istanbul, Turkey.

Functional & Integrative Genomics
|December 1, 2016
PubMed
Summary

This study discovered 68,592 single-nucleotide polymorphisms (SNPs) in Aegilops tauschii, providing a valuable resource for genetic research. These SNPs will aid in understanding the D genome and improving wheat through marker-assisted selection.

Keywords:
Aegilops tauschiiChromosome 5D-specific SNPWheat

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Area of Science:

  • Genomics
  • Plant Genetics
  • Molecular Biology

Background:

  • Single-nucleotide polymorphisms (SNPs) are crucial molecular markers for genomic studies.
  • Large-scale SNP discovery in Aegilops tauschii, particularly for the D genome, has been limited.
  • Aegilops tauschii is vital for bread wheat genetic improvement.

Purpose of the Study:

  • To report a large-scale SNP discovery in Aegilops tauschii.
  • To develop a workflow for comparing SNPs between Aegilops tauschii and Triticum aestivum.
  • To create the first chromosome-specific SNP catalog for Aegilops tauschii.

Main Methods:

  • Genomic and transcriptomic sequencing of seven Aegilops tauschii accessions.
  • Identification of 68,592 SNPs on the 5D chromosome gene-related sequences.
  • Development of a comparative workflow for SNP analysis between Ae. tauschii and Triticum aestivum.

Main Results:

  • Discovery of 68,592 SNPs in the gene-related sequences of the 5D chromosome of Ae. tauschii.
  • Achieved a high SNP density of 4.49 SNPs per kilobyte in genic regions.
  • Established a chromosome-specific SNP catalog for Ae. tauschii.

Conclusions:

  • The identified SNPs represent a significant advancement for SNP discovery in Aegilops tauschii.
  • The chromosome-specific SNP catalog will facilitate trait association studies for wheat improvement.
  • The developed workflow enables comparative SNP analysis between closely related species.