Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.

High-density SNP arrays developed for humans and their companion species provide a rapid and convenient tool for generating SNP data in closely-related non-model organisms, but have not yet been widely applied to phylogenetically divergent taxa. Consequently, we used the CanineHD BeadChip to genotyp...

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Main Authors: Joseph I Hoffman, Michael A S Thorne, Rob McEwing, Jaume Forcada, Rob Ogden
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23874599/?tool=EBI
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author Joseph I Hoffman
Michael A S Thorne
Rob McEwing
Jaume Forcada
Rob Ogden
author_facet Joseph I Hoffman
Michael A S Thorne
Rob McEwing
Jaume Forcada
Rob Ogden
author_sort Joseph I Hoffman
collection DOAJ
description High-density SNP arrays developed for humans and their companion species provide a rapid and convenient tool for generating SNP data in closely-related non-model organisms, but have not yet been widely applied to phylogenetically divergent taxa. Consequently, we used the CanineHD BeadChip to genotype 24 Antarctic fur seal (Arctocephalus gazella) individuals. Despite seals and dogs having diverged around 44 million years ago, 33,324 out of 173,662 loci (19.2%) could be genotyped, of which 173 were polymorphic and clearly interpretable. Two SNPs were validated using KASP genotyping assays, with the resulting genotypes being 100% concordant with those obtained from the high-density array. Two loci were also confirmed through in silico visualisation after mapping them to the fur seal transcriptome. Polymorphic SNPs were distributed broadly throughout the dog genome and did not differ significantly in proximity to genes from either monomorphic SNPs or those that failed to cross-amplify in seals. However, the nearest genes to polymorphic SNPs were significantly enriched for functional annotations relating to energy metabolism, suggesting a possible bias towards conserved regions of the genome.
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spelling doaj.art-168176e9286d4d85a244059610fdef042022-12-21T23:16:59ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0187e6836510.1371/journal.pone.0068365Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.Joseph I HoffmanMichael A S ThorneRob McEwingJaume ForcadaRob OgdenHigh-density SNP arrays developed for humans and their companion species provide a rapid and convenient tool for generating SNP data in closely-related non-model organisms, but have not yet been widely applied to phylogenetically divergent taxa. Consequently, we used the CanineHD BeadChip to genotype 24 Antarctic fur seal (Arctocephalus gazella) individuals. Despite seals and dogs having diverged around 44 million years ago, 33,324 out of 173,662 loci (19.2%) could be genotyped, of which 173 were polymorphic and clearly interpretable. Two SNPs were validated using KASP genotyping assays, with the resulting genotypes being 100% concordant with those obtained from the high-density array. Two loci were also confirmed through in silico visualisation after mapping them to the fur seal transcriptome. Polymorphic SNPs were distributed broadly throughout the dog genome and did not differ significantly in proximity to genes from either monomorphic SNPs or those that failed to cross-amplify in seals. However, the nearest genes to polymorphic SNPs were significantly enriched for functional annotations relating to energy metabolism, suggesting a possible bias towards conserved regions of the genome.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23874599/?tool=EBI
spellingShingle Joseph I Hoffman
Michael A S Thorne
Rob McEwing
Jaume Forcada
Rob Ogden
Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.
PLoS ONE
title Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.
title_full Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.
title_fullStr Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.
title_full_unstemmed Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.
title_short Cross-amplification and validation of SNPs conserved over 44 million years between seals and dogs.
title_sort cross amplification and validation of snps conserved over 44 million years between seals and dogs
url https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23874599/?tool=EBI
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