Design and validation of an STR hexaplex assay for DNA profiling of grapevine cultivars

Electrophoresis. 2016 Dec;37(23-24):3059-3067. doi: 10.1002/elps.201600068. Epub 2016 Oct 26.

Abstract

Although the analysis of length polymorphism at STR loci has become a method of choice for grape cultivar identification, the standardization of methods for this purpose lags behind that of methods for DNA profiling in human and animal forensic genetics. The aim of this study was thus to design and validate a grapevine STR protocol with a practically useful level of multiplexing. Using free bioinformatics tools, published primer sequences, and nucleotide databases, we constructed and optimized a primer set for the simultaneous analysis of six STR loci (VVIi51, scu08vv, scu05vv, VVMD17, VrZAG47, and VrZAG83) by multiplex PCR and CE with laser-induced fluorescence, and tested it on 90 grape cultivars. The new protocol requires subnanogram quantities of the DNA template and enables automated, high-throughput genetic analysis with reasonable discriminatory power. As such, it represents a step toward further standardization of grape DNA profiling.

Keywords: Grapevine DNA analysis; Multiplex PCR; STRs; Vitis vinifera L.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Computational Biology
  • DNA, Plant / analysis*
  • DNA, Plant / genetics*
  • Genetic Markers / genetics
  • Microsatellite Repeats / genetics*
  • Multiplex Polymerase Chain Reaction / methods*
  • Reproducibility of Results
  • Vitis / classification
  • Vitis / genetics*
  • Wine

Substances

  • DNA, Plant
  • Genetic Markers