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GrainGenes Reference Report: TAG-123-555

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Reference
TAG-123-555
Title
High-throughput SNP discovery and genotyping in durum wheat (Triticum durum Desf.)
Journal
Theoretical and Applied Genetics
Volume
123
Pages
555-569
Author
Trebbi D
[ Show all 10 ]
Abstract
We describe the application of complexity reduction of polymorphic sequences (CRoPS®) technology for the discovery of SNP markers in tetraploid durum wheat (Triticum durum Desf.). A next-generation sequencing experiment was carried out on reduced representation libraries obtained from four durum cultivars. SNP validation and minor allele frequency (MAF) estimate were carried out on a panel of 12 cultivars, and the feasibility of genotyping these SNPs in segregating populations was tested using the Illumina Golden Gate (GG) technology. A total of 2,659 SNPs were identified on 1,206 consensus sequences. Among the 768 SNPs that were chosen irrespective of their genomic repetitiveness level and assayed on the Illumina BeadExpress genotyping system, 275 (35.8'%) SNPs matched the expected genotypes observed in the SNP discovery phase. MAF data indicated that the overall SNP informativeness was high: a total of 196 (71.3'%) SNPs had MAF >0.2, of which 76 (27.6'%) showed MAF >0.4. Of these SNPs, 157 were mapped in one of two mapping populations (Meridiano × Claudio and Colosseo × Lloyd) and integrated into a common genetic map. Despite the relatively low genotyping efficiency of the GG assay, the validated CRoPS-derived SNPs showed valuable features for genomics and breeding applications such as a uniform distribution across the wheat genome, a prevailing single-locus codominant nature and a high polymorphism. Here, we report a new set of 275 highly robust genome-wide Triticum SNPs that are readily available for breeding purposes.
External Databases
https://link.springer.com/article/10.1007%2Fs00122-011-1607-7
http://dx.doi.org/10.1007/s00122-011-1607-7
Locus
kbo-0001
[ Show all 446 ]
Probe
KBO-0287
[ Show all 232 ]
Sequence
KBO_0287
[ Show all 232 ]

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