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A MinION™-based pipeline for fast and cost-effective DNA barcoding.

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|April 20, 2018
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Summary

A new DNA barcoding pipeline for Oxford Nanopore MinION™ enables rapid and cost-effective species identification. This method generates accurate barcodes for hundreds of specimens using just one flow cell, significantly reducing costs and lab time.

Keywords:
DNA barcodingamplicon sequencingnanopore sequencingnext-generation sequencing barcoding

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Area of Science:

  • Genomics
  • Bioinformatics
  • Molecular Biology

Background:

  • DNA barcoding is crucial for species discovery and identification.
  • Current methods are often laboratory-intensive, time-consuming, and expensive.

Purpose of the Study:

  • To develop a DNA barcoding pipeline utilizing Oxford Nanopore MinION™ technology.
  • To demonstrate the feasibility of generating numerous high-quality DNA barcodes efficiently and affordably.

Main Methods:

  • Development of a novel barcoding pipeline for MinION™ data.
  • Generation of consensus barcodes from raw reads to mitigate basecall errors.
  • Implementation of an optional error correction pipeline using conserved amino acid motifs.
  • Analysis of data from three MinION™ runs with diverse specimen samples.

Main Results:

  • One MinION™ flow cell can yield barcodes for approximately 500 specimens.
  • Consensus barcodes demonstrate high accuracy (99.3%-100%) with minimal ambiguous bases after correction.
  • Reliable barcodes for over 90% of specimens can be obtained within ~2 hours of sequencing.
  • Estimated cost per barcode is less than USD 2.

Conclusions:

  • The developed pipeline offers a rapid, cost-effective, and scalable solution for DNA barcoding.
  • Oxford Nanopore MinION™ technology is a viable tool for high-throughput species identification.
  • This approach democratizes DNA barcoding, making it more accessible for research and conservation.