High performance imputation of structural and single nucleotide variants in Atlantic salmon using low-coverage whole genome sequencing
High performance imputation of structural and single nucleotide variants in Atlantic salmon using low-coverage whole genome sequencing
复制标题
使用低覆盖率全基因组测序对大西洋鲑鱼的结构和单核苷酸变异进行高性能估算
DOI:
10.1101/2023.03.05.531147
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Gundappa M
中科院分区:
文献类型:
--
作者:
Gundappa M
Whole genome sequencing (WGS), despite its advantages, is yet to replace alternative methods for genotyping single nucleotide variants (SNVs). Structural variants (SVs) have larger effects on traits than SNVs, but are more challenging to accurately genotype. Using low-coverage WGS with genotype imputation offers a cost-effective strategy to achieve genome-wide variant coverage, but is yet to be tested for SVs. Here, we investigate combined SNV and SV imputation with low-coverage WGS data in Atlantic salmon (Salmo salar). As the reference panel, we used genotypes for high-confidence SVs and SNVs for n=445 wild individuals sampled from diverse populations. We also generated 15x WGS data (n=20 samples) for a commercial population out-with the reference panel, and called SVs and SNVs with gold-standard approaches. An imputation method (GLIMPSE) was tested at WGS depths of 1x, 2x, 3x and 4x for samples within and out-with the reference panel. SNVs were imputed with high accuracy and recall across all WGS depths, including for samples out-with the reference panel. For SVs, we compared imputation based purely on linkage disequilibrium (LD) with SNVs, to that supplemented with SV genotype likelihoods (GLs) from low-coverage WGS. Including SV GLs increased imputation accuracy, but as a trade-off with recall, requiring 3-4x coverage for best performance. Combining strategies allowed us to capture 84% of the reference panel deletions with 87% accuracy at 1x WGS. This study highlights the promise of reference panel imputation using low-coverage WGS, including novel opportunities to enhance the resolution of genome-wide association studies by capturing SVs.
登录
查看更多内容
DOI:
--
发表时间:
2022
期刊:
bioRxiv
影响因子:
--
作者:
Guangtu Gao;G. Waldbieser;R. Youngblood;Dongyan Zhao;M. Pietrak;M. Allen;J. Stannard;John Buchanan;Roseanna L. Long;Melissa Milligan;Gary Burr;Katherine Mejia;Moira J. Sheehan;B. Scheffler;C. Rexroad;B. Peterson;Y. Palti
通讯作者:
Y. Palti
影响因子:
--
作者:
D. Torkamaneh;F. Belzile
通讯作者:
F. Belzile
影响因子:
9.2
作者:
J. R. Belyeu;Thomas J. Nicholas;Brent S. Pedersen;T. Sasani;James M. Havrilla;Stephanie N. Kravitz;Megan E. Conway;Brian K. Lohman;A. Quinlan;Ryan M. Layer
通讯作者:
Ryan M. Layer
DOI:
10.1101/2020.05.16.099614
发表时间:
2020
期刊:
--
影响因子:
--
作者:
Bertolotti A
通讯作者:
Bertolotti A
影响因子:
12.3
作者:
Chen, Sai;Krusche, Peter;Eberle, Michael A.
通讯作者:
Eberle, Michael A.