Dataset Information

Uncovering Sub-Structure and Genomic Profiles in Across-Countries Subpopulations of Angus Cattle.

ABSTRACT: Highlighting genomic profiles for geographically distinct subpopulations of the same breed may provide insights into adaptation mechanisms to different environments, reveal genomic regions divergently selected, and offer initial guidance to joint genomic analysis. Here, we characterized similarities and differences between the genomic patterns of Angus subpopulations, born and raised in Canada (N?=?382) and Brazil (N?=?566). Furthermore, we systematically scanned for selection signatures based on the detection of autozygosity islands common between the two subpopulations, and signals of divergent selection, via F_ST and varLD tests. The principal component analysis revealed a sub-structure with a close connection between the two subpopulations. The averages of genomic relationships, inbreeding coefficients, and linkage disequilibrium at varying genomic distances were rather similar across them, suggesting non-accentuated differences in overall genomic diversity. Autozygosity islands revealed selection signatures common to both subpopulations at chromosomes 13 (63.77-65.25?Mb) and 14 (22.81-23.57?Mb), which are notably known regions affecting growth traits. Nevertheless, further autozygosity islands along with F_ST and varLD tests unravel particular sites with accentuated population subdivision at BTAs 7 and 18 overlapping with known QTL and candidate genes of reproductive performance, thermoregulation, and resistance to infectious diseases. Our findings indicate overall genomic similarity between Angus subpopulations, with noticeable signals of divergent selection in genomic regions associated with the adaptation in different environments.

SUBMITTER: Cardoso DF

PROVIDER: S-EPMC7260210 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Uncovering Sub-Structure and Genomic Profiles in Across-Countries Subpopulations of Angus Cattle.

Cardoso Diercles Francisco DF Fernandes Júnior Gerardo Alves GA Scalez Daiane Cristina Becker DCB Alves Anderson Antonio Carvalho AAC Magalhães Ana Fabrícia Braga AFB Bresolin Tiago T Ventura Ricardo Vieira RV Li Changxi C de Sena Oliveira Márcia Cristina MC Porto-Neto Laercio Ribeiro LR Carvalheiro Roberto R de Oliveira Henrique Nunes HN Tonhati Humberto H Albuquerque Lucia Galvão LG

Scientific reports 20200529 1

Highlighting genomic profiles for geographically distinct subpopulations of the same breed may provide insights into adaptation mechanisms to different environments, reveal genomic regions divergently selected, and offer initial guidance to joint genomic analysis. Here, we characterized similarities and differences between the genomic patterns of Angus subpopulations, born and raised in Canada (N = 382) and Brazil (N = 566). Furthermore, we systematically scanned for selection signatures based o ...[more]

PMID: 32471998

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Dataset Information

Uncovering Sub-Structure and Genomic Profiles in Across-Countries Subpopulations of Angus Cattle.

Publications

Uncovering Sub-Structure and Genomic Profiles in Across-Countries Subpopulations of Angus Cattle.

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