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A microarray-based high throughput molecular marker genotyping method: the tagged microarray marker (TAM) approach.

Andrew J Flavell1, Viacheslav N Bolshakov, Allan Booth

  • 1Plant Research Unit, University of Dundee at Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK. a.j.flavell@dundee.ac.uk

Nucleic Acids Research
|September 23, 2003
PubMed
Summary
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A new microarray method efficiently scores thousands of DNA samples for molecular markers, including transposon insertions and single nucleotide polymorphisms (SNPs). This technique uses fluorescently labeled probes for accurate and high-throughput genetic analysis.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • High-throughput genotyping is crucial for genetic studies.
  • Existing methods for detecting polymorphisms like transposon insertions and SNPs can be labor-intensive.
  • A need exists for a scalable and efficient platform for molecular marker scoring.

Purpose of the Study:

  • To develop a novel microarray-based method for high-throughput scoring of co-dominant molecular markers.
  • To validate the method's efficacy for detecting transposon insertional polymorphism and single nucleotide polymorphisms (SNPs).

Main Methods:

  • Developed a microarray technique utilizing allele-specific PCR products spotted onto streptavidin-coated glass slides.
  • Employed biotin-terminated PCR products and fluorescent detector oligonucleotides for visualization.

Related Experiment Videos

  • Utilized two tagged primer oligonucleotides per locus, detected by fluorescently labeled concatameric DNA probes.

    • Main Results:

    • Successfully developed and implemented a microarray-based method for scoring thousands of DNAs.
    • The method demonstrated effectiveness in detecting both transposon insertional polymorphism and single nucleotide polymorphism (SNP) markers.
    • Achieved visualization through hybridization of fluorescent detector oligonucleotides to tagged primers.

    Conclusions:

    • The developed microarray method provides a powerful tool for high-throughput genetic analysis.
    • This approach is suitable for scoring various co-dominant molecular markers, including transposon insertions and SNPs.
    • The technique offers an efficient and scalable solution for genetic marker scoring in diverse research applications.