Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations

Italian local turkey populations are an important source of genetic diversity that should be preserved through an in vivo approach. Whole genome sequencing (WGS) and genotyping datasets were used to assess genetic variability within and across populations, to perform a genome-wide comparative analys...

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Main Authors: Medhat S. Saleh, Vincenzo Landi, Martijn F.L. Derks, Gerardo Centoducati, Martien A.M. Groenen, Pasquale De Palo, Elena Ciani, Maria G. Strillacci, Alessandro Bagnato, Nicola Pugliese, Elena Circella, Antonio Camarda
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Language:English
Published: Elsevier 2025-01-01
Series:Poultry Science
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Online Access:http://www.sciencedirect.com/science/article/pii/S0032579124011210
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author Medhat S. Saleh
Vincenzo Landi
Martijn F.L. Derks
Gerardo Centoducati
Martien A.M. Groenen
Pasquale De Palo
Elena Ciani
Maria G. Strillacci
Alessandro Bagnato
Nicola Pugliese
Elena Circella
Antonio Camarda
author_facet Medhat S. Saleh
Vincenzo Landi
Martijn F.L. Derks
Gerardo Centoducati
Martien A.M. Groenen
Pasquale De Palo
Elena Ciani
Maria G. Strillacci
Alessandro Bagnato
Nicola Pugliese
Elena Circella
Antonio Camarda
author_sort Medhat S. Saleh
collection DOAJ
description Italian local turkey populations are an important source of genetic diversity that should be preserved through an in vivo approach. Whole genome sequencing (WGS) and genotyping datasets were used to assess genetic variability within and across populations, to perform a genome-wide comparative analysis among populations and to identify selection signatures in Italian turkey populations. We used new data from 73 WGS samples (12X) representing five turkey populations, together with previous data from 107 birds genotyped with the Affymetrix 600K single nucleotide polymorphism (SNP) turkey array from 11 populations. The PCA and Admixture show a relatively strong isolation effect between the populations. Moreover, the values of genomic inbreeding based on ROH (FROH) showed marked differences among populations and ranged from 0.096 to 0.643. Selective sweeps were identified using the integrated haplotype score (iHS) within the local group, the commercial line, and the Narragansett breed, resulting in the identification of 20, 19, and 27 regions with a total of 73, 48, and 90 candidate genes, respectively. Some of these genes such as FAM107B, MSTN, PDZRN4, HSF2 and GJA1 are associated with heat stress, growth, and carcass traits. We conclude that our results improve our understanding of the genomic architecture of the Italian turkey populations. The findings of iHS suggest that selection can play a significant role in shaping selection signatures in local turkey populations and could provide a basis for identifying gene mutations that may be beneficial in adaptation to climate change. Our results will be useful in developing and implementing conservation and selection plans for Italian turkey populations.
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spelling doaj-art-02318396b8e04055a3906003031288e82025-01-22T05:40:25ZengElsevierPoultry Science0032-57912025-01-011041104543Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populationsMedhat S. Saleh0Vincenzo Landi1Martijn F.L. Derks2Gerardo Centoducati3Martien A.M. Groenen4Pasquale De Palo5Elena Ciani6Maria G. Strillacci7Alessandro Bagnato8Nicola Pugliese9Elena Circella10Antonio Camarda11Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, Italy; Animal Breeding and Genomics, Wageningen University & Research, P.O. Box 338, Wageningen, 6700 AH, the Netherlands; Department of Animal Production, Faculty of Agriculture, Benha University, Benha 13736, EgyptDepartment of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, Italy; Corresponding author.Animal Breeding and Genomics, Wageningen University & Research, P.O. Box 338, Wageningen, 6700 AH, the NetherlandsDepartment of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, ItalyAnimal Breeding and Genomics, Wageningen University & Research, P.O. Box 338, Wageningen, 6700 AH, the NetherlandsDepartment of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, ItalyDepartment of Biosciences, Biotechnologies and Environment, University of Bari Aldo Moro, Bari, ItalyDepartment of Veterinary Medicine, Università degli Studi di Milano, Via dell'Università 6, 26900, Lodi, ItalyDepartment of Veterinary Medicine, Università degli Studi di Milano, Via dell'Università 6, 26900, Lodi, ItalyDepartment of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, ItalyDepartment of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, ItalyDepartment of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano, ItalyItalian local turkey populations are an important source of genetic diversity that should be preserved through an in vivo approach. Whole genome sequencing (WGS) and genotyping datasets were used to assess genetic variability within and across populations, to perform a genome-wide comparative analysis among populations and to identify selection signatures in Italian turkey populations. We used new data from 73 WGS samples (12X) representing five turkey populations, together with previous data from 107 birds genotyped with the Affymetrix 600K single nucleotide polymorphism (SNP) turkey array from 11 populations. The PCA and Admixture show a relatively strong isolation effect between the populations. Moreover, the values of genomic inbreeding based on ROH (FROH) showed marked differences among populations and ranged from 0.096 to 0.643. Selective sweeps were identified using the integrated haplotype score (iHS) within the local group, the commercial line, and the Narragansett breed, resulting in the identification of 20, 19, and 27 regions with a total of 73, 48, and 90 candidate genes, respectively. Some of these genes such as FAM107B, MSTN, PDZRN4, HSF2 and GJA1 are associated with heat stress, growth, and carcass traits. We conclude that our results improve our understanding of the genomic architecture of the Italian turkey populations. The findings of iHS suggest that selection can play a significant role in shaping selection signatures in local turkey populations and could provide a basis for identifying gene mutations that may be beneficial in adaptation to climate change. Our results will be useful in developing and implementing conservation and selection plans for Italian turkey populations.http://www.sciencedirect.com/science/article/pii/S0032579124011210Genome-wide scanGenetic diversityPopulation structureSelection signatureTurkey
spellingShingle Medhat S. Saleh
Vincenzo Landi
Martijn F.L. Derks
Gerardo Centoducati
Martien A.M. Groenen
Pasquale De Palo
Elena Ciani
Maria G. Strillacci
Alessandro Bagnato
Nicola Pugliese
Elena Circella
Antonio Camarda
Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations
Poultry Science
Genome-wide scan
Genetic diversity
Population structure
Selection signature
Turkey
title Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations
title_full Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations
title_fullStr Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations
title_full_unstemmed Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations
title_short Genome-wide analyses of genomic diversity, population structure and selection signatures in Italian turkey populations
title_sort genome wide analyses of genomic diversity population structure and selection signatures in italian turkey populations
topic Genome-wide scan
Genetic diversity
Population structure
Selection signature
Turkey
url http://www.sciencedirect.com/science/article/pii/S0032579124011210
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