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Hodișan R, Zaha DC, Jurca CM, Irina S, Bembea M. Genetic Diversity Based on the Analysis of 27 Y- Short Tandem Repetition (STR) Loci in Two Populations in the Apuseni Mountains, Romania. Cureus 2024; 16:e62505. [PMID: 38887750 PMCID: PMC11181957 DOI: 10.7759/cureus.62505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Y chromosome analysis is used in various fields of forensic genetics, genetic genealogy, and evolutionary research, due to its unique characteristics. Short tandem repetitions (STR) are particularly relevant in population genetic studies. The aim of this study is to analyze the genetic profile of two populations in the Apuseni Mountains area, Băița and Roșia Montană, Romania. METHODS 27 STR loci of the Y chromosome were analyzed to investigate the genetic profile of two populations from the Apuseni Mountains area. Investigating genetic diversity by analyzing allele frequency, haplotype frequency, calculating forensic parameters, and presenting the main haplogroups identified based on Y-STR markers. RESULTS Gene diversity in the batch from Băița varies from 0.515 for the DYS393 locus to 0.947 for the DYS385 locus. In the Roșia Montană population, gene diversity ranges from 0.432 for DYS393 to 0.931 for DYS385. The haplotype diversity in Roșia Montană was 0.991, and the haplotype diversity was 1.000 in the population from Băița. A total of nine haplogroups was identified in the batch from Băița, while only seven haplogroups were observed in the batch from Roșia Montană. Both groups are based on the same five major haplogroups (E, G, I, J, and R) and the most common haplogroup is R1b in both populations. CONCLUSION In this study, the genetic diversity of two distinct populations was assessed using genetic analyses based on different markers. Analysis of Y-STR profiles revealed significant genetic diversity in both studied groups. All haplogroups identified were similar to those present in other Romanian populations.
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Affiliation(s)
- Ramona Hodișan
- Doctoral School of Biomedical Sciences, University of Oradea, Oradea, ROU
- Department of Preclinical Disciplines, University of Oradea, Faculty of Medicine and Pharmacy, Oradea, ROU
| | - Dana C Zaha
- Department of Preclinical Disciplines, University of Oradea, Faculty of Medicine and Pharmacy, Oradea, ROU
| | - Claudia M Jurca
- Department of Preclinical Disciplines, University of Oradea, Faculty of Medicine and Pharmacy, Oradea, ROU
| | | | - Marius Bembea
- Doctoral School of Biomedical Sciences, University of Oradea, Oradea, ROU
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Borbély N, Székely O, Szeifert B, Gerber D, Máthé I, Benkő E, Mende BG, Egyed B, Pamjav H, Szécsényi-Nagy A. High Coverage Mitogenomes and Y-Chromosomal Typing Reveal Ancient Lineages in the Modern-Day Székely Population in Romania. Genes (Basel) 2023; 14:genes14010133. [PMID: 36672874 PMCID: PMC9858685 DOI: 10.3390/genes14010133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/22/2022] [Accepted: 12/27/2022] [Indexed: 01/05/2023] Open
Abstract
Here we present 115 whole mitogenomes and 92 Y-chromosomal Short Tandem Repeat (STR) and Single Nucleotide Polymorphism (SNP) profiles from a Hungarian ethnic group, the Székelys (in Romanian: Secuii, in German: Sekler), living in southeast Transylvania (Romania). The Székelys can be traced back to the 12th century in the region, and numerous scientific theories exist as to their origin. We carefully selected sample providers that had local ancestors inhabiting small villages in the area of Odorheiu Secuiesc/Székelyudvarhely in Romania. The results of our research and the reported data signify a qualitative leap compared to previous studies since it presents the first complete mitochondrial DNA sequences and Y-chromosomal profiles of 23 STRs from the region. We evaluated the results with population genetic and phylogenetic methods in the context of the modern and ancient populations that are either geographically or historically related to the Székelys. Our results demonstrate a predominantly local uniparental make-up of the population that also indicates limited admixture with neighboring populations. Phylogenetic analyses confirmed the presumed eastern origin of certain maternal (A, C, D) and paternal (Q, R1a) lineages, and, in some cases, they could also be linked to ancient DNA data from the Migration Period (5th-9th centuries AD) and Hungarian Conquest Period (10th century AD) populations.
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Affiliation(s)
- Noémi Borbély
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary
- Correspondence: (N.B.); (A.S.-N.)
| | - Orsolya Székely
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
| | - Bea Szeifert
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary
| | - Dániel Gerber
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary
| | - István Máthé
- Department of Bioengineering, Socio-Human Sciences and Engineering, Faculty of Economics, Sapientia Hungarian University of Transylvania (Cluj-Napoca), Piața Libertății 1, 530104 Miercurea-Ciuc, Romania
| | - Elek Benkő
- Institute of Archaeology, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
| | - Balázs Gusztáv Mende
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
| | - Balázs Egyed
- Department of Genetics, Faculty of Natural Sciences, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary
| | - Horolma Pamjav
- Department of Reference Sample Analysis, Institute of Forensic Genetics, Hungarian Institutes for Forensic Sciences, Mosonyi Street 9, 1087 Budapest, Hungary
| | - Anna Szécsényi-Nagy
- Institute of Archaeogenomics, Research Centre for the Humanities, Eötvös Loránd Research Network, Tóth Kálmán Street 4, 1097 Budapest, Hungary
- Correspondence: (N.B.); (A.S.-N.)
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Ehler E, Vanek D. Forensic genetic analyses in isolated populations with examples of central European Valachs and Roma. J Forensic Leg Med 2017; 48:46-52. [PMID: 28454050 DOI: 10.1016/j.jflm.2017.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/22/2017] [Accepted: 04/09/2017] [Indexed: 01/27/2023]
Abstract
Isolated populations present a constant threat to the correctness of forensic genetic casework. In this review article we present several examples of how analyzing samples from isolated populations can bias the results of the forensic statistics and analyses. We select our examples from isolated populations from central and southeastern Europe, namely the Valachs and the European Roma. We also provide the reader with general strategies and principles to improve the laboratory practice (best practice) and reporting of samples from supposedly isolated populations. These include reporting the precise population data used for computing the forensic statistics, using the appropriate θ correction factor for calculating allele frequencies, typing ancestry informative markers in samples of unknown or uncertain ethnicity and establishing ethnic-specific forensic databases.
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Affiliation(s)
- Edvard Ehler
- Department of Biology and Environmental Studies, Charles University in Prague, Faculty of Education, Magdaleny Rettigove 4, Prague, 116 39, Czech Republic; Institute of Anthropology, Faculty of Biology, Adam Mickiewicz University, ul. Umultowska 89, 61-614, Poznan, Poland.
| | - Daniel Vanek
- Forensic DNA Service, Janovskeho 18, Prague 7, 170 00, Czech Republic; Charles University in Prague, 2nd Faculty of Medicine, V Uvalu 84, Prague, 150 06, Czech Republic; Nemocnice Na Bulovce, Institute of Legal Medicine, Budinova 2, Prague, 180 81, Czech Republic.
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Maternal Genetic Ancestry and Legacy of 10(th) Century AD Hungarians. Sci Rep 2016; 6:33446. [PMID: 27633963 PMCID: PMC5025779 DOI: 10.1038/srep33446] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 08/26/2016] [Indexed: 12/21/2022] Open
Abstract
The ancient Hungarians originated from the Ural region in today’s central Russia and migrated across the Eastern European steppe, according to historical sources. The Hungarians conquered the Carpathian Basin 895–907 AD, and admixed with the indigenous communities. Here we present mitochondrial DNA results from three datasets: one from the Avar period (7th–9th centuries) of the Carpathian Basin (n = 31); one from the Hungarian conquest-period (n = 76); and a completion of the published 10th–12th century Hungarian-Slavic contact zone dataset by four samples. We compare these mitochondrial DNA hypervariable segment sequences and haplogroup results with published ancient and modern Eurasian data. Whereas the analyzed Avars represents a certain group of the Avar society that shows East and South European genetic characteristics, the Hungarian conquerors’ maternal gene pool is a mixture of West Eurasian and Central and North Eurasian elements. Comprehensively analyzing the results, both the linguistically recorded Finno-Ugric roots and historically documented Turkic and Central Asian influxes had possible genetic imprints in the conquerors’ genetic composition. Our data allows a complex series of historic and population genetic events before the formation of the medieval population of the Carpathian Basin, and the maternal genetic continuity between 10th–12th century and modern Hungarians.
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Bíró A, Fehér T, Bárány G, Pamjav H. Testing Central and Inner Asian admixture among contemporary Hungarians. Forensic Sci Int Genet 2014; 15:121-6. [PMID: 25468443 DOI: 10.1016/j.fsigen.2014.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 11/05/2014] [Accepted: 11/07/2014] [Indexed: 10/24/2022]
Abstract
Historically, the Carpathian Basin was the final destination for many nomadic peoples who migrated westward from Inner and Central Asia towards Europe. Proto-Hungarians (Steppe Magyars) were among those who came from the East, the Eurasian Steppe in the early middle ages. In order to detect the paternal genetic contribution from nomadic Steppe tribes, we tested 966 samples from Central Asian (Uzbekistan, Kazakhstan), Inner Asian (Mongolians and Buryats in Mongolia) and Hungarian-speaking European (Hungarian, Sekler and Csango) populations. We constructed median-joining networks of certain haplogroups in Hungarian-speaking European, and Altaic-speaking Central and Inner Asian populations. We estimated that the possible paternal genetic contribution from the above described populations among contemporary Hungarian speaking populations ranged between 5% and 7.4%. It is lowest among Hungarians from Hungary (5.1%), while higher among Hungarian-speaking groups in Romania, notably Sekler (7.4%) and Csango (6.3%). However, these results represent only an upper limit. Actual Central/Inner Asian admixture might be somewhat lower as some of the related lineages may have come from a common third source. The main haplogroups responsible for the Central/Inner Asian admixture among Hungarians are J2*-M172 (xM47, M67, M12), J2-L24, R1a-Z93; Q-M242 and E-M78. Earlier studies showed very limited Uralic genetic influence among Hungarians, and based on the present study, Altaic/Turkic genetic contribution is also not significant, although significantly higher than the Uralic one. The conclusion of this study is that present-day Hungarian speakers are genetically very similar to neighbouring populations, isolated Hungarian speaking groups having relatively higher presence of Central and Inner Asian genetic elements. At the same time, the reliable historical and genetic conclusions require an extension of the study to a significantly larger database with deep haplogroup resolution, including ancient DNA data.
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Affiliation(s)
- András Bíró
- Department of Anthropology, Hungarian Natural History Museum, Budapest H-1088, Hungary
| | - Tibor Fehér
- Institute of Forensic Medicine, Network of Forensic Science Institutes, Ministry of Justice, Budapest, Hungary
| | - Gusztáv Bárány
- Institute of Forensic Medicine, Network of Forensic Science Institutes, Ministry of Justice, Budapest, Hungary
| | - Horolma Pamjav
- Institute of Forensic Medicine, Network of Forensic Science Institutes, Ministry of Justice, Budapest, Hungary.
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Kita Y, Naghizadeh F, Kita R, Tomita G, Holló G. Comparison of macular ganglion cell complex thickness to total retinal thickness ratio between Hungarian and Japanese eyes. Jpn J Ophthalmol 2013; 57:540-5. [DOI: 10.1007/s10384-013-0273-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 07/26/2013] [Indexed: 11/29/2022]
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Petrić G, Drašković D, Zgonjanin-Bosić D, Budakov B, Veselinović I. Genetic variation at 15 autosomal STR loci in the Hungarian population of Vojvodina Province, Republic of Serbia. Forensic Sci Int Genet 2012; 6:e163-5. [PMID: 22999869 DOI: 10.1016/j.fsigen.2012.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 03/11/2012] [Accepted: 05/05/2012] [Indexed: 10/27/2022]
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Cockerton S, McManus K, Buckleton J. Interpreting lineage markers in view of subpopulation effects. Forensic Sci Int Genet 2012; 6:393-7. [DOI: 10.1016/j.fsigen.2011.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 04/05/2011] [Accepted: 04/30/2011] [Indexed: 11/16/2022]
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Young KL, Sun G, Deka R, Crawford MH. Paternal genetic history of the Basque population of Spain. Hum Biol 2012; 83:455-75. [PMID: 21846204 DOI: 10.3378/027.083.0402] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study examines the genetic variation in Basque Y chromosome lineages using data on 12 Y-short tandem repeat (STR) loci in a sample of 158 males from four Basque provinces of Spain (Alava, Vizcaya, Guipuzcoa, and Navarre). As reported in previous studies, the Basques are characterized by high frequencies of haplogroup R1b (83%). AMOVA analysis demonstrates genetic homogeneity, with a small but significant amount of genetic structure between provinces (Y-short tandem repeat loci STRs: 1.71%, p = 0.0369). Gene and haplotype diversity levels in the Basque population are on the low end of the European distribution (gene diversity: 0.4268; haplotype diversity: 0.9421). Post-Neolithic contribution to the paternal Basque gene pool was estimated by measuring the proportion of those haplogroups with a Time to Most Recent Common Ancestor (TMRCA) previously dated either prior (R1b, I2a2) or subsequent to (E1b1b, G2a, J2a) the Neolithic. Based on these estimates, the Basque provinces show varying degrees of post-Neolithic contribution in the paternal lineages (10.9% in the combined sample).
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Affiliation(s)
- Kristin L Young
- Department of Family Medicine, Research Division, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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Ehler E, Vane D, Stenzl V, Vancata V. Y-chromosomal diversity of the Valachs from the Czech Republic: model for isolated population in Central Europe. Croat Med J 2011; 52:358-67. [PMID: 21674832 PMCID: PMC3131682 DOI: 10.3325/cmj.2011.52.358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Aim To evaluate Y-chromosomal diversity of the Moravian Valachs of the Czech Republic and compare them with a Czech population sample and other samples from Central and South-Eastern Europe, and to evaluate the effects of genetic isolation and sampling. Methods The first sample set of the Valachs consisted of 94 unrelated male donors from the Valach region in northeastern Czech Republic border-area. The second sample set of the Valachs consisted of 79 men who originated from 7 paternal lineages defined by surname. No close relatives were sampled. The third sample set consisted of 273 unrelated men from the whole of the Czech Republic and was used for comparison, as well as published data for other 27 populations. The total number of samples was 3244. Y-short tandem repeat (STR) markers were typed by standard methods using PowerPlex® Y System (Promega) and Yfiler® Amplification Kit (Applied Biosystems) kits. Y-chromosomal haplogroups were estimated from the haplotype information. Haplotype diversity and other intra- and inter-population statistics were computed. Results The Moravian Valachs showed a lower genetic variability of Y-STR markers than other Central European populations, resembling more to the isolated Balkan populations (Aromuns, Csango, Bulgarian, and Macedonian Roma) than the surrounding populations (Czechs, Slovaks, Poles, Saxons). We illustrated the effect of sampling on Valach paternal lineages, which includes reduction of discrimination capacity and variability inside Y-chromosomal haplogroups. Valach modal haplotype belongs to R1a haplogroup and it was not detected in the Czech population. Conclusion The Moravian Valachs display strong substructure and isolation in their Y chromosomal markers. They represent a unique Central European population model for population genetics.
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Affiliation(s)
- Edvard Ehler
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University in Prague, Prague, Czech Republic.
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Demeter SJ, Kelemen B, Székely G, Popescu O. Genetic variation at 15 polymorphic, autosomal, short tandem repeat loci of two Hungarian populations in Transylvania, Romania. Croat Med J 2010; 51:515-23. [PMID: 21162164 PMCID: PMC3031157 DOI: 10.3325/cmj.2010.51.515] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2010] [Accepted: 10/08/2010] [Indexed: 11/05/2022] Open
Abstract
AIM To determine allele distribution and genetic parameters for two populations living in the Romanian region of Transylvania: Hungarians from Cluj and Szeklers from Covasna county, and to compare the results between the two populations and with other Hungarian and Romanian populations. METHODS Allele frequencies for 15 autosomal STR loci (D8S1179, D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, VWA, TPOX, D18S51, D5S818, and FGA), several forensic parameters, and paternity parameters were determined for Szekler Hungarians of Covasna county (CV-Sze, n=278) and non-Szekler Transylvanian Hungarians, who were represented by Hungarians from Cluj county (CJ-Hu, n=146). RESULTS Average expected heterozygosity was above 70%. The combined power of discrimination and combined power of exclusion values were high. All tested loci were in agreement with Hardy-Weinberg equilibrium, with the exception of the CSF1PO locus for Covasna county. Pairwise population comparison tests and exact population differentiation tests showed no significant differences between the CJ-Hu and CV-Sze populations, and the CV-Sze group showed greater differences from other Romanian populations than did the CJ-Hu group. CONCLUSION Hungarians from Cluj show greater genetic heterogeneity than Szeklers from Covasna. The loci tested are suitable for studying micro-differentiation between these two populations, and between these populations and other populations in Hungary and Romania.
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Affiliation(s)
- Szabolcs József Demeter
- Molecular Biology Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes Bolyai University, Treboniu Laurian 42, 400271 Cluj-Napoca, Romania.
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Pichler I, Fuchsberger C, Platzer C, Calişkan M, Marroni F, Pramstaller PP, Ober C. Drawing the history of the Hutterite population on a genetic landscape: inference from Y-chromosome and mtDNA genotypes. Eur J Hum Genet 2009; 18:463-70. [PMID: 19844259 DOI: 10.1038/ejhg.2009.172] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Although the North American Hutterites trace their origins to South Tyrol, no attempts have been made to examine the genetic migration history of the Hutterites before emigrating to the United States in the 1870s. To investigate this, we studied 9 microsatellite loci and 11 unique event polymorphism (UEP) markers on the Y-chromosome, the hypervariable region I (HVRI) of the mitochondrial DNA (mtDNA), as well as the complete mtDNA genome of Hutterite and South Tyrolean samples. Only 6 out of 14 Y-chromosome UEP+microsatellite haplotypes and 3 out of 11 mitochondrial haplotypes that were present in the Hutterites were also present in the South Tyrolean population. The phylogenetic relationships inferred from Y-chromosome and mtDNA databases show that the Hutterites have a unique genetic background related to a similar extent to central and eastern European populations. An admixture analysis indicates, however, a relatively high genetic contribution of central European populations to the Hutterite gene pool. These results are consistent with historical records on Hutterite migrations and demographic history. In addition, our data reveal similar numbers of Y and mitochondrial haplotypes in Hutterite male and female founders, respectively. The Hutterite male and female gene pools are similar with respect to genetic diversity and genetic distance measures and comparable with respect to their origins, suggesting a similar evolutionary history.
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Affiliation(s)
- Irene Pichler
- Institute of Genetic Medicine, European Academy Bozen/Bolzano, (EURAC), Bolzano, Italy; Affiliated Institute of the University of Lübeck, Germany. [corrected]
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Egyed B, Brandstätter A, Irwin JA, Pádár Z, Parsons TJ, Parson W. Mitochondrial control region sequence variations in the Hungarian population: Analysis of population samples from Hungary and from Transylvania (Romania). Forensic Sci Int Genet 2007; 1:158-62. [DOI: 10.1016/j.fsigen.2007.03.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Accepted: 03/17/2007] [Indexed: 11/26/2022]
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