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102022
Poster Number 340-1420
See more from this Division: C07 Genomics, Molecular Genetics and Biotechnology
See more from this Session: Genomics, Molecular Genetics and Biotechnology Poster (includes student competition)
Tuesday, November 8, 2016
Phoenix Convention Center North, Exhibit Hall CDE
Abstract:
The genetic diversity of soybean is relatively narrow due to the limited subset of wild progenitors from which it was domesticated, as well as selective sweeps during the production of elite lines. This narrow genetic base limits the identification of genetic loci responsible for traits of interest to breeders. While some effort has been made to exploit soybean landraces in modern breeding, the potentially rich reservoir of genes that reside in Glycine soja, soybean’s nearest wild relative, has been underutilized. Previous work explored the USDA G. soja collection, genotyped at 32,416 SNPs to identify population structure and test for associations with bioclimatic and biophysical variables (G3 6:835-843). Several candidate G. soja abiotic stress tolerance loci were identified in association with variables such as soil composition, soil pH, and monthly precipitation. Our current research efforts focus on identifying DNA sequence polymorphisms from G. soja candidate genes that may underlie these adaptations and functionally validating these alleles using isogenic or gene editing approaches. The identification of potentially adaptive variants in this collection may permit a more targeted use of this wild species for soybean improvement.
See more from this Division: C07 Genomics, Molecular Genetics and Biotechnology
See more from this Session: Genomics, Molecular Genetics and Biotechnology Poster (includes student competition)
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