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Effa K, Rosenbom S, Han J, Dessie T, Beja-Pereira A. Genetic Diversities and Historical Dynamics of Native Ethiopian Horse Populations ( Equus caballus) Inferred from Mitochondrial DNA Polymorphisms. Genes (Basel) 2021; 12:genes12020155. [PMID: 33503948 PMCID: PMC7912211 DOI: 10.3390/genes12020155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/07/2021] [Accepted: 01/13/2021] [Indexed: 11/16/2022] Open
Abstract
Matrilineal genetic diversity and relationship were investigated among eight morphologically identified native Ethiopian horse populations using polymorphisms in 46 mtDNA D-loop sequences (454 base pairs). The horse populations identified were Abyssinian, Bale, Borana, Horro, Kafa, Kundido feral horses, Ogaden and Selale. Mitochondrial DNA D-loop sequences were characterized by 15 variable sites that defined five different haplotypes. All genetic diversity estimates, including Reynolds' linearized genetic distance, genetic differentiation (FST) and nucleotide sequence divergence (DA), revealed a low genetic differentiation in native Ethiopian horse populations. However, Kundido feral and Borana domestic horses were slightly diverged from the rest of the Ethiopian horse populations. We also tried to shed some light on the matrilineal genetic root of native Ethiopian horses from a network constructed by combining newly generated haplotypes and reference haplotypes deposited in the GenBank for Eurasian type Turkish Anatolian horses that were used as a genetic conduit between Eurasian and African horse populations. Ninety-two haplotypes were generated from the combined Ethio-Eurasian mtDNA D-loop sequences. A network reconstructed from the combined haplotypes using Median-Joining algorithm showed that haplotypes generated from native Ethiopian horses formed separate clusters. The present result encourages further investigation of the genetic origin of native African horses by retrieving additional mtDNA sequences deposited in the GenBank for African and Eurasian type horses.
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Affiliation(s)
- Kefena Effa
- Ethiopian Institute of Agricultural Research (EIAR), Addis Ababa P.O. Box 2003, Ethiopia
- Correspondence: ; Tel.: +251-911-74-83-81
| | - Sonia Rosenbom
- Research Center in Biodiversity and Genetic Resources (CIBIO), University of Porto, 4485-661 Vairao, Portugal; (S.R.); (A.B.-P.)
| | - Jianlin Han
- CAAS-ILRI Joint Laboratory on Livestock and Forage Genetic Resources (JLLFGR), Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China;
- International Livestock Research Institute (ILRI), Addis Ababa P.O. Box 5689, Ethiopia;
| | - Tadelle Dessie
- International Livestock Research Institute (ILRI), Addis Ababa P.O. Box 5689, Ethiopia;
| | - Albano Beja-Pereira
- Research Center in Biodiversity and Genetic Resources (CIBIO), University of Porto, 4485-661 Vairao, Portugal; (S.R.); (A.B.-P.)
- DGAOT, Faculty of Sciences, University of Porto, 4485-661 Vila do Conde, Portugal
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Funk SM, Guedaoura S, Juras R, Raziq A, Landolsi F, Luís C, Martínez AM, Musa Mayaki A, Mujica F, Oom MDM, Ouragh L, Stranger Y, Vega‐Pla JL, Cothran EG. Major inconsistencies of inferred population genetic structure estimated in a large set of domestic horse breeds using microsatellites. Ecol Evol 2020; 10:4261-4279. [PMID: 32489595 PMCID: PMC7246218 DOI: 10.1002/ece3.6195] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 11/10/2022] Open
Abstract
STRUCTURE remains the most applied software aimed at recovering the true, but unknown, population structure from microsatellite or other genetic markers. About 30% of structure-based studies could not be reproduced (Molecular Ecology, 21, 2012, 4925). Here we use a large set of data from 2,323 horses from 93 domestic breeds plus the Przewalski horse, typed at 15 microsatellites, to evaluate how program settings impact the estimation of the optimal number of population clusters K opt that best describe the observed data. Domestic horses are suited as a test case as there is extensive background knowledge on the history of many breeds and extensive phylogenetic analyses. Different methods based on different genetic assumptions and statistical procedures (dapc, flock, PCoA, and structure with different run scenarios) all revealed general, broad-scale breed relationships that largely reflect known breed histories but diverged how they characterized small-scale patterns. structure failed to consistently identify K opt using the most widespread approach, the ΔK method, despite very large numbers of MCMC iterations (3,000,000) and replicates (100). The interpretation of breed structure over increasing numbers of K, without assuming a K opt, was consistent with known breed histories. The over-reliance on K opt should be replaced by a qualitative description of clustering over increasing K, which is scientifically more honest and has the advantage of being much faster and less computer intensive as lower numbers of MCMC iterations and repetitions suffice for stable results. Very large data sets are highly challenging for cluster analyses, especially when populations with complex genetic histories are investigated.
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Affiliation(s)
- Stephan Michael Funk
- Centro de Excelencia de Modelación y Computación CientíficaUniversidad de La FronteraTemucoChile
- Nature HeritageSt. LawrenceUK
| | - Sonya Guedaoura
- Faculté des Sciences de la Nature et de la VieUniversité d'El‐TarfEl‐TarfAlgeria
- Faculté de PharmacieUniversité LavalQuébec CityQCCanada
| | - Rytis Juras
- College of Veterinary Medicine and Biomedical ScienceTexas A&M UniversityCollege StationTXUSA
| | - Absul Raziq
- Society of Veterinary, Environment and Agriculture Scientists (SAVES)QuettaPakistan
| | | | - Cristina Luís
- Centro Interuniversitário de História das Ciências e da Tecnologia (CIUHCT)Faculdade de CiênciasUniversidade de LisboaLisboaPortugal
| | | | | | - Fernando Mujica
- Instituto de Producción AnimalUniversidad Austral de ChileValdiviaChile
| | - Maria do Mar Oom
- CE3C – Centre for Ecology, Evolution and Environmental ChangesFaculdade de CiênciasUniversidade de LisboaLisboaPortugal
| | | | | | - Jose Luis Vega‐Pla
- Laboratorio de Investigación AplicadaCrıa Caballar de las Fuerzas ArmadasCordobaSpain
| | - Ernest Gus Cothran
- College of Veterinary Medicine and Biomedical ScienceTexas A&M UniversityCollege StationTXUSA
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Cozzi MC, Strillacci MG, Valiati P, Rogliano E, Bagnato A, Longeri M. Genetic variability of Akhal-Teke horses bred in Italy. PeerJ 2018; 6:e4889. [PMID: 30202639 PMCID: PMC6129384 DOI: 10.7717/peerj.4889] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 05/14/2018] [Indexed: 12/13/2022] Open
Abstract
Background The Akhal-Teke horse (AKH) is native of the modern Turkmenistan area. It was introduced in Italy from 1991 to 2000 mainly as an endurance horse. This paper characterizes the genetic variability of the whole Italian AKH horse population and evaluates their inbreeding level by analyzing microsatellite markers and mitochondrial D-Loop sequences. Methods Seventeen microsatellite marker loci were genotyped on 95 DNA samples from almost all the AKH horses bred in Italy in the last 20 years. Standard genetic variability measures (Ho, He, FIS) were compared against the same variables published on other eight AKH populations. In addition, 397 bp of mtDNA D-loop region were sequenced on a sub-group of 22 unrelated AKH out of the 95 sampled ones, and on 11 unrelated Arab horses. The haplotypes identified in the Italian population were aligned to sequences of AKH (56), Arab (five), Caspian Pony (13), Przewalskii (two) and Barb (15) horses available in GenBank. The Median Joining Network (MJN), Principal Component Analysis (PCA) and Neighbor-joining (NJ) tree were calculated on the total 126 sequences. Results Nucleic markers showed a high degree of polymorphism (Ho = 0.642; He = 0.649) and a low inbreeding level (FIS = 0.016) in Italian horses, compared to other AKH populations (ranged from −0.103 AKH from Estonia to 0.114 AKH from Czech Republic). High variability was also recorded in the D-Loop region. 11 haplotypes were identified with haplotype diversity (hd), nucleotide diversity (π) and average number of nucleotide differences (k) of 0.938, 0.021 and 6.448, respectively. When all the 126 D-Loop sequences were compared, 51 haplotypes were found, and four were here found only in the Italian AKH horses. The 51 haplotypes were conformed to eight recognized mtDNA haplogroups (A, C, F, G, L, M, P and Q) and confirmed by MJN analysis, Italian horses being assigned to five haplogroups (A, C, G, L and M). Using a PCA approach to the same data, the total haplotypes were grouped into two clusters including A+C+M+P and G+F haplogroups, while L and Q haplogroups remained ungrouped. Finally, the NJ algorithm effectively discretizes only the L haplogroup. All the above data univocally indicate good genetic variability and accurate management of the Akhal-Teke population in Italy.
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Affiliation(s)
- Maria C Cozzi
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Maria G Strillacci
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Paolo Valiati
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Elisa Rogliano
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Alessandro Bagnato
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Maria Longeri
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
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Khaudov AD, Duduev AS, Kokov ZA, Amshokov KK, Zhekamukhov MK, Zaitsev AM, Reissmann M. Genetic analysis of maternal and paternal lineages in Kabardian horses by uniparental molecular markers. Open Vet J 2018; 8:40-46. [PMID: 29445620 PMCID: PMC5806666 DOI: 10.4314/ovj.v8i1.7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 01/23/2018] [Indexed: 11/17/2022] Open
Abstract
Studies of mitochondrial DNA (mtDNA) as well as the non-recombining part of the Y chromosome help to understand the origin and distribution of maternal and paternal lineages. The Kabardian horse from Northern Caucasia which is well-known for strength, stamina and endurance in distance riding has a large gap in its breeding documentation especially in the recent past. A 309 bp fragment of the mitochondrial D-loop (156 Kabardian horses) and six mutations in Y chromosome (49 Kabardian stallions), respectively, were analyzed to get a better insight into breeding history, phylogenetic relationship to related breeds, maternal and paternal diversity and genetic structure. We found a high mitochondrial diversity represented by 64 D-loop haplotypes out of 14 haplogroups. The most frequent haplogroups were G (19.5%), L (12.3%), Q (11.7%), and B (11.0%). Although these four haplogroups are also frequently found in Asian riding horses (e.g. Buryat, Kirghiz, Mongolian, Transbaikalian, Tuvinian) the percentage of the particular haplogroups varies sometimes remarkable. In contrast, the obtained haplogroup pattern from Kabardian horse was more similar to that of breeds reared in the Middle East. No specific haplotype cluster was observed in the phylogenetic tree for Kabardian horses. On Kabardian Y chromosome, two mutations were found leading to three haplotypes with a percentage of 36.7% (haplotype HT1), 38.8% (haplotype HT2) and 24.5% (haplotype HT3), respectively. The high mitochondrial and also remarkable paternal diversity of the Kabardian horse is caused by its long history with a widely spread maternal origin and the introduction of Arabian as well as Thoroughbred influenced stallions for improvement. This high genetic diversity provides a good situation for the ongoing breed development and performance selection as well as avoiding inbreeding.
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Affiliation(s)
- Aliybek D. Khaudov
- Institute of Chemistry and Biology, Kabardino-Balkarian State University, Chernyshevskovo 173, 360004 Nalchik, Russia
| | - Astemir S. Duduev
- Institute of Chemistry and Biology, Kabardino-Balkarian State University, Chernyshevskovo 173, 360004 Nalchik, Russia
| | - Zaur A. Kokov
- Institute of Physics and Mathematics, Kabardino-Balkarian State University, Chernyshevskovo 173, 360004 Nalchik, Russia
| | - Khazhismel K. Amshokov
- Kabardino-Balkarian Research Institute of Agriculture, Kirova 224, 360004 Nalchik, Russia
| | | | - Alexander M. Zaitsev
- All-Russian Research Institute of Horse Breeding, Ryazan region, Rybnoye district, 391105 Divovo, Russia
| | - Monika Reissmann
- Abrecht Daniel Thaer-Institute for Agricultural and Horticultural Sciences, Humboldt University, Unter den Linden 6, 10099 Berlin, Germany
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Wallner B, Palmieri N, Vogl C, Rigler D, Bozlak E, Druml T, Jagannathan V, Leeb T, Fries R, Tetens J, Thaller G, Metzger J, Distl O, Lindgren G, Rubin CJ, Andersson L, Schaefer R, McCue M, Neuditschko M, Rieder S, Schlötterer C, Brem G. Y Chromosome Uncovers the Recent Oriental Origin of Modern Stallions. Curr Biol 2017; 27:2029-2035.e5. [PMID: 28669755 DOI: 10.1016/j.cub.2017.05.086] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/19/2017] [Accepted: 05/26/2017] [Indexed: 11/25/2022]
Abstract
The Y chromosome directly reflects male genealogies, but the extremely low Y chromosome sequence diversity in horses has prevented the reconstruction of stallion genealogies [1, 2]. Here, we resolve the first Y chromosome genealogy of modern horses by screening 1.46 Mb of the male-specific region of the Y chromosome (MSY) in 52 horses from 21 breeds. Based on highly accurate pedigree data, we estimated the de novo mutation rate of the horse MSY and showed that various modern horse Y chromosome lineages split much later than the domestication of the species. Apart from few private northern European haplotypes, all modern horse breeds clustered together in a roughly 700-year-old haplogroup that was transmitted to Europe by the import of Oriental stallions. The Oriental horse group consisted of two major subclades: the Original Arabian lineage and the Turkoman horse lineage. We show that the English Thoroughbred MSY was derived from the Turkoman lineage and that English Thoroughbred sires are largely responsible for the predominance of this haplotype in modern horses.
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Affiliation(s)
- Barbara Wallner
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna 1210, Austria.
| | - Nicola Palmieri
- Institut für Populationsgenetik, University of Veterinary Medicine Vienna, Vienna 1210, Austria; Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna 1210, Austria
| | - Claus Vogl
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna 1210, Austria
| | - Doris Rigler
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna 1210, Austria
| | - Elif Bozlak
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna 1210, Austria
| | - Thomas Druml
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna 1210, Austria
| | - Vidhya Jagannathan
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern 3001, Switzerland
| | - Tosso Leeb
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern 3001, Switzerland
| | - Ruedi Fries
- Lehrstuhl für Tierzucht, Technische Universität München, Freising 85354, Germany
| | - Jens Tetens
- Institute of Animal Breeding and Husbandry, University of Kiel, Kiel 24098, Germany; Functional Breeding Group, Department of Animal Sciences, Georg-August-University Göttingen, Göttingen 37077, Germany
| | - Georg Thaller
- Institute of Animal Breeding and Husbandry, University of Kiel, Kiel 24098, Germany
| | - Julia Metzger
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover 30559, Germany
| | - Ottmar Distl
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover 30559, Germany
| | - Gabriella Lindgren
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala 75007, Sweden
| | - Carl-Johan Rubin
- Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala 75123, Sweden
| | - Leif Andersson
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala 75007, Sweden; Department of Medical Biochemistry and Microbiology, Science for Life Laboratory, Uppsala University, Uppsala 75123, Sweden; Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843-4461, USA
| | - Robert Schaefer
- Veterinary Population Medicine Department, University of Minnesota, St. Paul, MN 55108, USA
| | - Molly McCue
- Veterinary Population Medicine Department, University of Minnesota, St. Paul, MN 55108, USA
| | | | - Stefan Rieder
- Agroscope, Swiss National Stud Farm, Avenches 1580, Switzerland
| | - Christian Schlötterer
- Institut für Populationsgenetik, University of Veterinary Medicine Vienna, Vienna 1210, Austria
| | - Gottfried Brem
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna 1210, Austria
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Hristov P, Yordanov G, Ivanova A, Mitkov I, Sirakova D, Mehandzyiski I, Radoslavov G. Mitochondrial diversity in mountain horse population from the South-Eastern Europe. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 28:787-792. [PMID: 27247184 DOI: 10.1080/24701394.2016.1186667] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
It is believed that population structure of mountain horse breeds is preserved from any genetic introgression, because of their geographical isolation and specific semi-wild life style of husbandry. Till date there are no molecular data for the Balkan horses. In this study we try to give information about some autochthonous mountain horse breeds from Bulgaria. A total of 121 horses from three different mountain massifs are presented: Stara Planina (the Balkan mountain), the Rhodopes and Rila-Pirin massif were genotyped according to mitochondrial D-loop region. The results showed huge diversity of all known haplogroups with exception of C, F and R. West Eurasian haplogroups B, D, M and L were with the highest frequencies. Haplogroups A, J, I, O'P and Q were also observed with the highest frequencies, but not equally distributed among the three populations. Analyses of the horse breeds reveal preserved genetic profile of the Balkan and the Rhodopes mountains populations. In contrast, a Rila-Pirin breed unexpectedly showed mixed profile - a massive genetic introgression with an Asiatic-type haplogroups. A similar mixed Euro-Asiatic haplotype profile possessed the Carpathian mountain pony, although both populations are separated geographically and historically. The genetic pool of three Bulgarian mountain horse populations is highly heterogenic and because of that these breeds should be preserved.
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Affiliation(s)
- Peter Hristov
- a Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences , Sofia , Bulgaria
| | | | | | - Ivan Mitkov
- a Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences , Sofia , Bulgaria
| | - Daniela Sirakova
- a Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences , Sofia , Bulgaria
| | - Ivan Mehandzyiski
- c Agricultural Academy, Agricultural and Stockbreeding Experimental Station , Smolyan , Bulgaria
| | - Georgi Radoslavov
- a Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences , Sofia , Bulgaria
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Yüncü E, Demirci S, Koban Baştanlar E, Doğan ŞA, Taşdemir U, Togan İ. Comparative study of three simple molecular approaches in search of mtDNA haplogroup identification of domestic sheep. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2013.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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