Genotyping by Sequencing Using Specific Allelic Capture to Build a High-Density Genetic Map of Durum Wheat

PLoS One. 2016 May 12;11(5):e0154609. doi: 10.1371/journal.pone.0154609. eCollection 2016.

Abstract

Targeted sequence capture is a promising technology which helps reduce costs for sequencing and genotyping numerous genomic regions in large sets of individuals. Bait sequences are designed to capture specific alleles previously discovered in parents or reference populations. We studied a set of 135 RILs originating from a cross between an emmer cultivar (Dic2) and a recent durum elite cultivar (Silur). Six thousand sequence baits were designed to target Dic2 vs. Silur polymorphisms discovered in a previous RNAseq study. These baits were exposed to genomic DNA of the RIL population. Eighty percent of the targeted SNPs were recovered, 65% of which were of high quality and coverage. The final high density genetic map consisted of more than 3,000 markers, whose genetic and physical mapping were consistent with those obtained with large arrays.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles*
  • Chromosome Mapping*
  • Contig Mapping
  • Genotyping Techniques / methods*
  • Polymorphism, Genetic
  • Polymorphism, Single Nucleotide / genetics
  • Sequence Analysis, DNA / methods*
  • Triticum / genetics*

Grants and funding

YH and the data production were financed by the TRAM project funded by ARVALIS (http://www.arvalisinstitutduvegetal.fr). The authors especially thank David Gouache for his warm support. Sequencing was performed on the GeT platform facility (http://get.genotoul.fr/).