A SNP resource for Douglas-fir: de novo transcriptome assembly and SNP detection and validation Public Deposited

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  • (0) Save to: more options A SNP resource for Douglas-fir: de novo transcriptome assembly and SNP detection and validation Author(s): Howe, GT (Howe, Glenn T.)[ 1 ] ; Yu, JB (Yu, Jianbin)[ 1 ] ; Knaus, B (Knaus, Brian)[ 2 ] ; Cronn, R (Cronn, Richard)[ 2 ] ; Kolpak, S (Kolpak, Scott)[ 1 ] ; Dolan, P (Dolan, Peter)[ 3 ] ; Lorenz, WW (Lorenz, W. Walter)[ 4 ] ; Dean, JFD (Dean, Jeffrey F. D.)[ 4 ] Source: BMC GENOMICS Volume: 14 Article Number: 137 DOI: 10.1186/1471-2164-14-137 Published: FEB 28 2013 Times Cited: 0 (from Web of Science) Cited References: 81 [ view related records ] Citation Map Abstract: Background: Douglas-fir (Pseudotsuga menziesii), one of the most economically and ecologically important tree species in the world, also has one of the largest tree breeding programs. Although the coastal and interior varieties of Douglas-fir (vars. menziesii and glauca) are native to North America, the coastal variety is also widely planted for timber production in Europe, New Zealand, Australia, and Chile. Our main goal was to develop a SNP resource large enough to facilitate genomic selection in Douglas-fir breeding programs. To accomplish this, we developed a 454-based reference transcriptome for coastal Douglas-fir, annotated and evaluated the quality of the reference, identified putative SNPs, and then validated a sample of those SNPs using the Illumina Infinium genotyping platform. Results: We assembled a reference transcriptome consisting of 25,002 isogroups (unique gene models) and 102,623 singletons from 2.76 million 454 and Sanger cDNA sequences from coastal Douglas-fir. We identified 278,979 unique SNPs by mapping the 454 and Sanger sequences to the reference, and by mapping four datasets of Illumina cDNA sequences from multiple seed sources, genotypes, and tissues. The Illumina datasets represented coastal Douglas-fir (64.00 and 13.41 million reads), interior Douglas-fir (80.45 million reads), and a Yakima population similar to interior Douglas-fir (8.99 million reads). We assayed 8067 SNPs on 260 trees using an Illumina Infinium SNP genotyping array. Of these SNPs, 5847 (72.5%) were called successfully and were polymorphic. Conclusions: Based on our validation efficiency, our SNP database may contain as many as similar to 200,000 true SNPs, and as many as similar to 69,000 SNPs that could be genotyped at similar to 20,000 gene loci using an Infinium II array-more SNPs than are needed to use genomic selection in tree breeding programs. Ultimately, these genomic resources will enhance Douglas-fir breeding and allow us to better understand landscape-scale patterns of genetic variation and potential responses to climate change.
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  • Howe, G. T., Yu, J., Knaus, B., Cronn, R., Kolpak, S., Dolan, P., . . . Dean, J. F. (2013). A SNP resource for douglas-fir: De novo transcriptome assembly and SNP detection and validation. BMC Genomics, 14(1), 137-137. doi:10.1186/1471-2164-14-137
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