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Related Experiment Videos

High throughput, high resolution selection of polymorphic microsatellite loci for multiplex analysis.

Nicholas C Cryer1, David R Butler, Mike J Wilkinson

  • 1School of Biological Sciences, University of Reading, Reading, Berkshire, RG6 6AS, UK. n.c.cryer@reading.ac.uk

Plant Methods
|November 8, 2005
PubMed
Summary

This study introduces a cost-effective method for selecting microsatellite markers. It enables efficient identification of polymorphic markers with broad allele ranges for genetic studies.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Bioinformatics

Background:

  • Large-scale genetic studies require well-characterized microsatellite markers with broad allele ranges.
  • Selecting complementary markers with non-overlapping ranges is a significant challenge for multiplex assay development.
  • Current characterization methods are laborious and expensive due to locus-specific fluorescent primers.

Purpose of the Study:

  • To develop a simple, inexpensive, and efficient method for selecting polymorphic microsatellite markers.
  • To overcome the bottleneck in developing multiplex microsatellite assays by identifying markers with distinct allele ranges.
  • To optimize DNA pooling strategies for accurate microsatellite marker characterization.

Main Methods:

  • A novel approach involves pooling unlabelled PCR amplicons and ligating them into a cloning vector.

Related Experiment Videos

  • A second amplification round uses generic labelled primers (vector-specific) and unlabelled locus-specific primers.
  • Tested DNA pool sizes ranging from 8 to 96 individuals to determine optimal pooling for allele range assessment.

    • Main Results:

    • The described system generates allelic profiles representative of all individuals within a DNA pool.
    • Optimal DNA pool size of 12 individuals was identified for reliable detection of all alleles.
    • This method balances the detection of numerous alleles with the risk of over-diluting rare alleles.

    Conclusions:

    • This technique offers a high-resolution, rapid, and cost-effective way to select polymorphic microsatellite loci.
    • It facilitates the identification of loci with non-overlapping allele ranges suitable for large-scale multiplex assays.
    • The method simplifies marker selection, reducing costs and labor associated with genetic profiling.