Sequenced-based GWAS for linear classification traits in Belgian Blue beef cattle reveals new coding variants in genes regulating body size in mammals

被引：6

作者：

Duarte, Jose Luis Gualdron ^{[1
,2
,3
]}

Yuan, Can ^{[1
,2
]}

Gori, Ann-Stephan ^{[3
]}

Moreira, Gabriel C. M. ^{[1
,2
]}

Takeda, Haruko ^{[1
,2
]}

Coppieters, Wouter ^{[4
]}

Charlier, Carole ^{[1
,2
]}

Georges, Michel ^{[1
,2
]}

Druet, Tom ^{[1
,2
]}

机构：

[1] Univ Liege B34, GIGA R, Unit Anim Genom, Ave Hop 1, B-4000 Liege, Belgium

[2] Univ Liege, Fac Vet Med, Ave Hop 1, B-4000 Liege, Belgium

[3] Walloon Breeders Assoc, Rue Champs Elysees 4, B-5590 Ciney, Belgium

[4] Univ Liege, GIGA R, GIGA Genom Platform, Ave Hop 1, B-4000 Liege, Belgium

来源：

GENETICS SELECTION EVOLUTION | 2023年 / 55卷 / 01期

关键词：

GENOTYPE IMPUTATION; SHORT STATURE; GENOME; EZH2; DELETION; PREDICTION; MUTATIONS; PHENOTYPE; SELECTION; ALIGNMENT;

D O I：

10.1186/s12711-023-00857-4

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

BackgroundCohorts of individuals that have been genotyped and phenotyped for genomic selection programs offer the opportunity to better understand genetic variation associated with complex traits. Here, we performed an association study for traits related to body size and muscular development in intensively selected beef cattle. We leveraged multiple trait information to refine and interpret the significant associations.ResultsAfter a multiple-step genotype imputation to the sequence-level for 14,762 Belgian Blue beef (BBB) cows, we performed a genome-wide association study (GWAS) for 11 traits related to muscular development and body size. The 37 identified genome-wide significant quantitative trait loci (QTL) could be condensed in 11 unique QTL regions based on their position. Evidence for pleiotropic effects was found in most of these regions (e.g., correlated association signals, overlap between credible sets (CS) of candidate variants). Thus, we applied a multiple-trait approach to combine information from different traits to refine the CS. In several QTL regions, we identified strong candidate genes known to be related to growth and height in other species such as LCORL-NCAPG or CCND2. For some of these genes, relevant candidate variants were identified in the CS, including three new missense variants in EZH2, PAPPA2 and ADAM12, possibly two additional coding variants in LCORL, and candidate regulatory variants linked to CCND2 and ARMC12. Strikingly, four other QTL regions associated with dimension or muscular development traits were related to five (recessive) deleterious coding variants previously identified.ConclusionsOur study further supports that a set of common genes controls body size across mammalian species. In particular, we added new genes to the list of those associated with height in both humans and cattle. We also identified new strong candidate causal variants in some of these genes, strengthening the evidence of their causality. Several breed-specific recessive deleterious variants were identified in our QTL regions, probably as a result of the extreme selection for muscular development in BBB cattle.

引用

页数：17