1
|
Sequeira JJ, Vinuthalakshmi K, Das R, van Driem G, Mustak MS. The maternal U1 haplogroup in the Koraga tribe as a correlate of their North Dravidian linguistic affinity. Front Genet 2024; 14:1303628. [PMID: 38384360 PMCID: PMC10880486 DOI: 10.3389/fgene.2023.1303628] [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] [Received: 09/28/2023] [Accepted: 12/31/2023] [Indexed: 02/23/2024] Open
Abstract
Introduction: The Koraga tribe are an isolated endogamous tribal group found in the southwest coastal region of India. The Koraga language shares inherited grammatical features with North Dravidian languages. To seek a possible genetic basis for this exceptionality and understand the maternal lineage pattern, we have aimed to reconstruct the inter-population and intra-population relationships of the Koraga tribal population by using mtDNA markers for the hypervariable regions along with a partial coding region sequence analysis. Methods and Results: Amongst the 96 individuals studied, we observe 11 haplogroups, of which a few are shared and others are unique to the clans Soppu, Oṇṭi and Kuṇṭu. In addition to several deep rooted Indian-specific lineages of macrohaplogroups M and U, we observe a high frequency of the U1 lineage (∼38%), unique to the Koraga. A Bayesian analysis of the U1 clade shows that the Koraga tribe share their maternal lineage with ancestral populations of the Caucasus at the cusp of the Last Glacial Maximum. Discussion: Our study suggests that the U1 lineage found in the Indian subcontinent represents a remnant of a post-glacial dispersal. The presence of West Asian U1 when viewed along with historical linguistics leads us to hypothesise that Koraga represents a mother tongue retained by a vanquished population group that fled southward at the demise of the Indus civilisation as opposed to a father tongue, associated with a particular paternal lineage.
Collapse
Affiliation(s)
| | | | - Ranajit Das
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - George van Driem
- Institut für Sprachwissenschaft, Universität Bern, Bern, Switzerland
| | - Mohammed S. Mustak
- Department of Applied Zoology, Mangalore University, Mangalore, Karnataka, India
| |
Collapse
|
2
|
Silcocks M, Dunstan SJ. Parallel signatures of Mycobacterium tuberculosis and human Y-chromosome phylogeography support the Two Layer model of East Asian population history. Commun Biol 2023; 6:1037. [PMID: 37833496 PMCID: PMC10575886 DOI: 10.1038/s42003-023-05388-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
The Two Layer hypothesis is fast becoming the favoured narrative describing East Asian population history. Under this model, hunter-gatherer groups who initially peopled East Asia via a route south of the Himalayas were assimilated by agriculturalist migrants who arrived via a northern route across Eurasia. A lack of ancient samples from tropical East Asia limits the resolution of this model. We consider insight afforded by patterns of variation within the human pathogen Mycobacterium tuberculosis (Mtb) by analysing its phylogeographic signatures jointly with the human Y-chromosome. We demonstrate the Y-chromosome lineages enriched in the traditionally hunter-gatherer groups associated with East Asia's first layer of peopling to display deep roots, low long-term effective population size, and diversity patterns consistent with a southern entry route. These characteristics mirror those of the evolutionarily ancient Mtb lineage 1. The remaining East Asian Y-chromosome lineage is almost entirely absent from traditionally hunter-gatherer groups and displays spatial and temporal characteristics which are incompatible with a southern entry route, and which link it to the development of agriculture in modern-day China. These characteristics mirror those of the evolutionarily modern Mtb lineage 2. This model paves the way for novel host-pathogen coevolutionary research hypotheses in East Asia.
Collapse
Affiliation(s)
- Matthew Silcocks
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC, Australia.
| | - Sarah J Dunstan
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville, VIC, Australia
| |
Collapse
|
3
|
Luis JR, Palencia-Madrid L, Deshpande K, Alfonso-Sanchez MA, Peña JA, de Pancorbo MM, Garcia-Bertrand R, Herrera RJ. On the Y chromosome of Chennai, Tamil Nadu and the Indian subcontinent. Gene 2023; 859:147175. [PMID: 36632908 DOI: 10.1016/j.gene.2023.147175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/14/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
Several migratory waves from various origins along with cultural practices restricting marriages between people of different castes and tribes as well as continued endogamy have led to a complex and diverse society in the Indian subcontinent. Despite being widely represented in genetic studies, several interrogatives remain with regards to India's current genetic constituents and distributions, source populations and population relationships. To identify the forces that may have shaped Indian population's genetic relationships, we undertook a comprehensive comparative study of the Y-chromosomes across India utilizing Y-STR and Y-SNP chromosomal markers using the general population of Chennai in the state of Tamil Nadu as a point of reference. Our analyses identify differences in source populations for different regions within India, unique linguistic characteristics as well as demographic and cultural forces that may have shaped population structure.
Collapse
Affiliation(s)
- Javier Rodriguez Luis
- Area de Antropología, Facultad de Biología, Universidad de Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain
| | - Leire Palencia-Madrid
- BIOMICs Research Group, Dpto. Z. y Biologia Celular A., Lascaray Research Centre, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain
| | - Ketaki Deshpande
- Department of Molecular Biology, Colorado College, Colorado Springs, CO 80903, USA
| | - Miguel A Alfonso-Sanchez
- Departamento de Genética y Antropología Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), Bilbao, Spain
| | - Jose A Peña
- Departamento de Genética y Antropología Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), Bilbao, Spain
| | - Marian M de Pancorbo
- BIOMICs Research Group, Dpto. Z. y Biologia Celular A., Lascaray Research Centre, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain
| | | | - Rene J Herrera
- Department of Molecular Biology, Colorado College, Colorado Springs, CO 80903, USA.
| |
Collapse
|
4
|
Kumar L, Farias K, Prakash S, Mishra A, Mustak MS, Rai N, Thangaraj K. Dissecting the genetic history of the Roman Catholic populations of West Coast India. Hum Genet 2021; 140:1487-1498. [PMID: 34424406 DOI: 10.1007/s00439-021-02346-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 08/12/2021] [Indexed: 10/20/2022]
Abstract
Migration and admixture history of populations have always been curious and an interesting theme. The West Coast of India harbours a rich diversity, bestowing various ethno-linguistic groups, with many of them having well-documented history of migrations. The Roman Catholic is one such distinct group, whose origin was much debated. While some historians and anthropologists relating them to ancient group of Gaud Saraswat Brahmins, others relating them for being members of the Jews Lost Tribes in the first Century migration to India. Historical records suggests that this community was later forcibly converted to Christianity by the Portuguese in Goa during the Sixteenth Century. Till date, no genetic study was done on this group to infer their origin and genetic affinity. Hence, we analysed 110 Roman Catholics from three different locations of West Coast of India including Goa, Kumta and Mangalore using both uniparental and autosomal markers to understand their genetic history. We found that the Roman Catholics have close affinity with the Indo-European linguistic groups, particularly Brahmins. Additionally, we detected genetic signal of Jews in the linkage disequilibrium-based admixture analysis, which was absent in other Indo-European populations, who are inhabited in the same geographical regions. Haplotype-based analysis suggests that the Roman Catholics consist of South Asian-specific ancestry and showed high drift. Ancestry-specific historical population size estimation points to a possible bottleneck around the time of Goan inquisition (fifteenth century). Analysis of the Roman Catholics data along with ancient DNA data of Neolithic and bronze age revealed that the Roman Catholics fits well in a basic model of ancient ancestral composition, typical of most of the Indo-European caste groups of India. Mitochondrial DNA (mtDNA) analysis suggests that most of the Roman Catholics have aboriginal Indian maternal genetic ancestry; while the Y chromosomal DNA analysis indicates high frequency of R1a lineage, which is predominant in groups with higher ancestral North Indian (ANI) component. Therefore, we conclude that the Roman Catholics of Goa, Kumta and Mangalore regions are the remnants of very early lineages of Brahmin community of India, having Indo-Europeans genetic affinity along with cryptic Jewish admixture, which needs to be explored further.
Collapse
Affiliation(s)
- Lomous Kumar
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, Telangana, 500007, India
| | - Kranti Farias
- Canadian Institute for Jewish Research, Montreal, Canada
| | - Satya Prakash
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, Telangana, 500007, India
| | - Anshuman Mishra
- Institute of Advanced Materials, IAAM, Gammalkilsvägen 18, 590 53, Ulrika, Sweden
| | - Mohammed S Mustak
- Department of Applied Zoology, Mangalore University, Mangalore, 574199, India
| | - Niraj Rai
- Birbal Sahni Institute of Palaeosciences, Uttar Pradesh, 53 University Road, Lucknow, 226007, India.
| | - Kumarasamy Thangaraj
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, Telangana, 500007, India.
- DBT-Centre for DNA Fingerprinting and Diagnostics, Uppal, Hyderabad, 500007, India.
| |
Collapse
|
5
|
Bozeman JF, Springfield S, Theis TL. Meeting EAT-Lancet Food Consumption, Nutritional, and Environmental Health Standards: A U.S. Case Study across Racial and Ethnic Subgroups. ENVIRONMENTAL JUSTICE (PRINT) 2020; 13:160-172. [PMID: 33101580 PMCID: PMC7580058 DOI: 10.1089/env.2020.0018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In 2019, The EAT-Lancet Commission developed criteria to assist policymakers and health care systems worldwide in sustaining natural resources to feed a forecasted 10 billion people through the year 2050. Although American dietary habits and underlying food production practices have a disproportionately negative impact on land, greenhouse gas (GHG), and water resources, there is limited information on how this population can meet the EAT-Lancet criteria. To address this, we measured adherence to an adapted version of the EAT-Lancet diet score criteria in United States (U.S.) populations overall and across racial/ethnic subgroups (i.e., black, Latinx, and white). In addition, we assessed the benefits of adherence in terms of saved environmental resources (i.e., land, GHG, and water). By performing these objectives, we provide vital information for the development of effective intervention strategies in the U.S. with enough refinement to address the human health and environmental implications of marginalized populations. Our results demonstrate that, on average, Americans do not meet EAT-Lancet criteria overall or across racial/ethnic subgroups. Shifting dietary intakes to meet the criteria could reduce environmental degradation between 28% and 38%. Furthermore, these methods can be adapted to other nations for the development of meaningful strategies that address the food, energy, and water challenges of our time.
Collapse
Affiliation(s)
- Joe F. Bozeman
- Dr. Bozeman III is a Research Associate at Civil and Materials Engineering Department and Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, Illinois. Dr. Springfield is an Assistant Professor at Department of Public Health, Parkinson School of Health Sciences and Public Health, Loyola University Chicago, Maywood, Illinois, USA. Dr. Theis is a Professor at Civil and Materials Engineering Department and Director at Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Sparkle Springfield
- Dr. Bozeman III is a Research Associate at Civil and Materials Engineering Department and Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, Illinois. Dr. Springfield is an Assistant Professor at Department of Public Health, Parkinson School of Health Sciences and Public Health, Loyola University Chicago, Maywood, Illinois, USA. Dr. Theis is a Professor at Civil and Materials Engineering Department and Director at Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Thomas L. Theis
- Dr. Bozeman III is a Research Associate at Civil and Materials Engineering Department and Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, Illinois. Dr. Springfield is an Assistant Professor at Department of Public Health, Parkinson School of Health Sciences and Public Health, Loyola University Chicago, Maywood, Illinois, USA. Dr. Theis is a Professor at Civil and Materials Engineering Department and Director at Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, Illinois, USA
| |
Collapse
|
6
|
Mahal DG. Y-DNA genetic evidence reveals several different ancient origins in the Brahmin population. Mol Genet Genomics 2020; 296:67-78. [PMID: 32978661 DOI: 10.1007/s00438-020-01725-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/09/2020] [Indexed: 10/23/2022]
Abstract
The ancient geographical origins of Brahmins-a prominent ethnic group in the Indian subcontinent-have remained controversial for a long time. This study employed the AMOVA (analysis of molecular variance) test to evaluate genetic affinities of this group with thirty populations of Central Asia and Europe. A domestic comparison was performed with fifty non-Brahmin groups in India. The results showed that Brahmins had genetic affinities with several foreign populations and also shared their genetic heritage with several domestic non-Brahmin groups. The study identified the deep ancient origins of Brahmins by tracing their Y-chromosome haplogroups and genetic markers on the Y-DNA phylogenetic tree. It was confirmed that the progenitors of this group emerged from at least 12 different geographic regions of the world. The study concluded that about 83% of the Brahmins in the dataset belonged to four major haplogroups, of which two emerged from Central Asia, one from the Fertile Crescent, and one was of an indigenous Indian origin.
Collapse
Affiliation(s)
- David G Mahal
- DGM Associates, Pacific Palisades, CA, USA. .,Institut Avrio de Geneve, Geneva, Switzerland.
| |
Collapse
|
7
|
Novel insights on demographic history of tribal and caste groups from West Maharashtra (India) using genome-wide data. Sci Rep 2020; 10:10075. [PMID: 32572090 PMCID: PMC7308293 DOI: 10.1038/s41598-020-66953-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/27/2020] [Indexed: 12/14/2022] Open
Abstract
The South Asian subcontinent is characterized by a complex history of human migrations and population interactions. In this study, we used genome-wide data to provide novel insights on the demographic history and population relationships of six Indo-European populations from the Indian State of West Maharashtra. The samples correspond to two castes (Deshastha Brahmins and Kunbi Marathas) and four tribal groups (Kokana, Warli, Bhil and Pawara). We show that tribal groups have had much smaller effective population sizes than castes, and that genetic drift has had a higher impact in tribal populations. We also show clear affinities between the Bhil and Pawara tribes, and to a lesser extent, between the Warli and Kokana tribes. Our comparisons with available modern and ancient DNA datasets from South Asia indicate that the Brahmin caste has higher Ancient Iranian and Steppe pastoralist contributions than the Kunbi Marathas caste. Additionally, in contrast to the two castes, tribal groups have very high Ancient Ancestral South Indian (AASI) contributions. Indo-European tribal groups tend to have higher Steppe contributions than Dravidian tribal groups, providing further support for the hypothesis that Steppe pastoralists were the source of Indo-European languages in South Asia, as well as Europe.
Collapse
|
8
|
Kumawat R, Shrivastava P, Shrivastava D, Mathur G. Molecular diversity of 23 Y-STR genetic markers in the population of Rajasthan, India. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100694] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
9
|
Syama A, Arun VS, ArunKumar G, Subhadeepta R, Friese K, Pitchappan R. Origin and identity of the Brokpa of Dah-Hanu, Himalayas – an NRY-HG L1a2 (M357) legacy. Ann Hum Biol 2019; 46:562-573. [DOI: 10.1080/03014460.2019.1694700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Adikarla Syama
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
- Department of Biotechnology, Faculty of Engineering and Technology, Manav Rachana, International University, Faridabad, India
| | | | - GaneshPrasad ArunKumar
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
- Human Genomics Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA Deemed University, Thirumalaisamudram, India
| | | | | | - Ramasamy Pitchappan
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
- Nilgiri Adivasi Welfare Association, Kotagiri, India
| | | |
Collapse
|
10
|
Isukapatla AR, Sinha M, Pulamagatta V, Chandrasekar A, Ahirwar B. Genetic Architecture of Southeast-coastal Indian tribal populations: A Y-chromosomal phylogenetic analysis. EGYPTIAN JOURNAL OF FORENSIC SCIENCES 2019. [DOI: 10.1186/s41935-019-0132-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
11
|
Sylvester C, Krishna MS, Rao JS, Chandrasekar A. Maternal genetic link of a south Dravidian tribe with native Iranians indicating bidirectional migration. Ann Hum Biol 2019; 46:175-180. [PMID: 30909755 DOI: 10.1080/03014460.2019.1599067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Background: The phylogeny of major mitochondrial DNA haplogroups has played a key role in assessing the people of India through molecular genetics. Aim: To resolve the phylogeny and phylogeographic pattern of autochthonous haplogroup R with its descendant haplogroup U in the Urali Kuruman tribal population of Southern India. Subjects and methods: Complete mitogenome sequences of 40 individuals were amplified and sequenced using the Sanger sequencing method. Mutations were scored referring to the revised Cambridge reference sequence, and phylogenetic trees were constructed using previously described sequences. Results: Novel sub-lineages of haplogroup R30: R30a1c1, and U1: U1a1c1d2, U1a1c1d2a were identified. Urali Kurumans pooled ancestry with the native Iranians sharing the sub-haplogroups R30a1c and U1a1c1d. The coalescence ages estimated for the sub-haplogroup R30a1c dates ∼ 9.4 ± 3.5 Kya and for subclade U1a1c1d dates ∼ 9.1 ± 2.7 Kya. Conclusion: The study revealed a genetic link between Iran and South Asia in the Neolithic time, indicating bidirectional migration and admixture.
Collapse
Affiliation(s)
- Charles Sylvester
- a Department of Studies in Zoology , University of Mysore , Mysore , India.,b Southern Regional Center , Anthropological Survey of India , Mysore , India
| | | | - Jaya Sankar Rao
- b Southern Regional Center , Anthropological Survey of India , Mysore , India
| | | |
Collapse
|
12
|
A comprehensive portrait of Y-STR diversity of Indian populations and comparison with 129 worldwide populations. Sci Rep 2018; 8:15421. [PMID: 30337554 PMCID: PMC6194109 DOI: 10.1038/s41598-018-33714-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 10/05/2018] [Indexed: 11/28/2022] Open
Abstract
India, known for its rich cultural, linguistic and ethnic diversity, has attracted the attention of population geneticists to understand its genetic diversity employing autosomal, Y-chromosomal and mitochondrial DNA markers. Y-chromosomal short tandem repeats (Y-STRs) are useful in understanding population substructures and reveal the patrilineal affinities among populations. Previous studies on Indian populations based on Y-STR markers were either limited to restricted number of markers or focused on few selected populations. In this study we genotyped 407 unrelated male individuals from 12 states in India employing the suite of Y-STRs present in PowerPlex Y23 (Promega, Madison, WI, USA). These populations clustered genetically close to each other irrespective of their geographic co-ordinates and were characterized primarily by R1a, H and L haplogroups. Interestingly, comparison with 129 worldwide populations showed genetic affinity of the Indian populations with few populations from Europe and Levantine. This study presents the first pan-Indian landscape of 23 Y-STRs and serves as a useful resource for construction of an Indian Y-STR database.
Collapse
|
13
|
Sylvester C, Krishna MS, Rao JS, Chandrasekar A. Neolithic phylogenetic continuity inferred from complete mitochondrial DNA sequences in a tribal population of Southern India. Genetica 2018; 146:383-389. [PMID: 30032461 DOI: 10.1007/s10709-018-0030-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 07/15/2018] [Indexed: 11/28/2022]
Abstract
The subsequent human migrations that dispersed out of Africa, both prehistoric and historic and colonization of India by modern humans is unanimous, and phylogeny of major mitochondrial DNA haplogroups have played a key role in assessing the genetic origin of people of India. To address more such events, complete mitogenomes of 113 Melakudiya tribe of Southern India were sequenced and 46 individuals showed the presence of west Eurasian autochthonous haplogroups HV14 and U7. Phylogenetic analysis revealed two novel subclades HV14a1b and HV14a1b1 and sequences representing haplogroup U7 were included under previously described subclade U7a3a1a2* specific to India. Moreover, the present analysis on complete mtDNA reveals addition information of the spread and distribution of west Eurasian haplogroups in southern India, in tracing an unexplored genetic link between Melakudiya tribe with the people of Iranian Plateau, South Caucasus, and Central Asia. Coalescence ages of HV14 and U7a3a1a2* trees in the present study dates ~ 16.1 ± 4.3 and ~ 13.4 ± 5.6 kya respectively.
Collapse
Affiliation(s)
- Charles Sylvester
- Department of Studies in Zoology, University of Mysore, Mysore, India.,Anthropological Survey of India, Southern Regional Center, Mysore, India
| | | | - Jaya Sankar Rao
- Anthropological Survey of India, Southern Regional Center, Mysore, India
| | | |
Collapse
|
14
|
Mahal DG, Matsoukas IG. The Geographic Origins of Ethnic Groups in the Indian Subcontinent: Exploring Ancient Footprints with Y-DNA Haplogroups. Front Genet 2018; 9:4. [PMID: 29410676 PMCID: PMC5787057 DOI: 10.3389/fgene.2018.00004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 01/04/2018] [Indexed: 02/05/2023] Open
Abstract
Several studies have evaluated the movements of large populations to the Indian subcontinent; however, the ancient geographic origins of smaller ethnic communities are not clear. Although historians have attempted to identify the origins of some ethnic groups, the evidence is typically anecdotal and based upon what others have written before. In this study, recent developments in DNA science were assessed to provide a contemporary perspective by analyzing the Y chromosome haplogroups of some key ethnic groups and tracing their ancient geographical origins from genetic markers on the Y-DNA haplogroup tree. A total of 2,504 Y-DNA haplotypes, representing 50 different ethnic groups in the Indian subcontinent, were analyzed. The results identified 14 different haplogroups with 14 geographic origins for these people. Moreover, every ethnic group had representation in more than one haplogroup, indicating multiple geographic origins for these communities. The results also showed that despite their varied languages and cultural differences, most ethnic groups shared some common ancestors because of admixture in the past. These findings provide new insights into the ancient geographic origins of ethnic groups in the Indian subcontinent. With about 2,000 other ethnic groups and tribes in the region, it is expected that more scientific discoveries will follow, providing insights into how, from where, and when the ancestors of these people arrived in the subcontinent to create so many different communities.
Collapse
Affiliation(s)
- David G Mahal
- School of Sport and Biomedical Sciences, University of Bolton, Bolton, United Kingdom.,Extension Division, University of California, Los Angeles, Los Angeles, CA, United States
| | - Ianis G Matsoukas
- School of Sport and Biomedical Sciences, University of Bolton, Bolton, United Kingdom
| |
Collapse
|
15
|
The genomic landscape of Nepalese Tibeto-Burmans reveals new insights into the recent peopling of Southern Himalayas. Sci Rep 2017; 7:15512. [PMID: 29138459 PMCID: PMC5686152 DOI: 10.1038/s41598-017-15862-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 10/24/2017] [Indexed: 12/17/2022] Open
Abstract
While much research attention has focused on demographic processes that enabled human diffusion on the Tibetan plateau, little is known about more recent colonization of Southern Himalayas. In particular, the history of migrations, admixture and/or isolation of populations speaking Tibeto-Burman languages, which is supposed to be quite complex and to have reshaped patterns of genetic variation on both sides of the Himalayan arc, remains only partially elucidated. We thus described the genomic landscape of previously unsurveyed Tibeto-Burman (i.e. Sherpa and Tamang) and Indo-Aryan communities from remote Nepalese valleys. Exploration of their genomic relationships with South/East Asian populations provided evidence for Tibetan admixture with low-altitude East Asians and for Sherpa isolation. We also showed that the other Southern Himalayan Tibeto-Burmans derived East Asian ancestry not from the Tibetan/Sherpa lineage, but from low-altitude ancestors who migrated from China plausibly across Northern India/Myanmar, having experienced extensive admixture that reshuffled the ancestral Tibeto-Burman gene pool. These findings improved the understanding of the impact of gene flow/drift on the evolution of high-altitude Himalayan peoples and shed light on migration events that drove colonization of the southern Himalayan slopes, as well as on the role played by different Tibeto-Burman groups in such a complex demographic scenario.
Collapse
|
16
|
Mahal DG, Matsoukas IG. Y-STR Haplogroup Diversity in the Jat Population Reveals Several Different Ancient Origins. Front Genet 2017; 8:121. [PMID: 28979290 PMCID: PMC5611447 DOI: 10.3389/fgene.2017.00121] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/30/2017] [Indexed: 11/19/2022] Open
Abstract
The Jats represent a large ethnic community that has inhabited the northwest region of India and Pakistan for several thousand years. It is estimated the community has a population of over 123 million people. Many historians and academics have asserted that the Jats are descendants of Aryans, Scythians, or other ancient people that arrived and lived in northern India at one time. Essentially, the specific origin of these people has remained a matter of contention for a long time. This study demonstrated that the origins of Jats can be clarified by identifying their Y-chromosome haplogroups and tracing their genetic markers on the Y-DNA haplogroup tree. A sample of 302 Y-chromosome haplotypes of Jats in India and Pakistan was analyzed. The results showed that the sample population had several different lines of ancestry and emerged from at least nine different geographical regions of the world. It also became evident that the Jats did not have a unique set of genes, but shared an underlying genetic unity with several other ethnic communities in the Indian subcontinent. A startling new assessment of the genetic ancient origins of these people was revealed with DNA science.
Collapse
Affiliation(s)
- David G Mahal
- School of Sport and Biomedical Sciences, University of BoltonBolton, United Kingdom.,Extension Division, University of California, Los AngelesLos Angeles, CA, United States
| | - Ianis G Matsoukas
- School of Sport and Biomedical Sciences, University of BoltonBolton, United Kingdom
| |
Collapse
|
17
|
Mondal M, Bergström A, Xue Y, Calafell F, Laayouni H, Casals F, Majumder PP, Tyler-Smith C, Bertranpetit J. Y-chromosomal sequences of diverse Indian populations and the ancestry of the Andamanese. Hum Genet 2017; 136:499-510. [PMID: 28444560 DOI: 10.1007/s00439-017-1800-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 04/10/2017] [Indexed: 01/25/2023]
Abstract
We present 42 new Y-chromosomal sequences from diverse Indian tribal and non-tribal populations, including the Jarawa and Onge from the Andaman Islands, which are analysed within a calibrated Y-chromosomal phylogeny incorporating South Asian (in total 305 individuals) and worldwide (in total 1286 individuals) data from the 1000 Genomes Project. In contrast to the more ancient ancestry in the South than in the North that has been claimed, we detected very similar coalescence times within Northern and Southern non-tribal Indian populations. A closest neighbour analysis in the phylogeny showed that Indian populations have an affinity towards Southern European populations and that the time of divergence from these populations substantially predated the Indo-European migration into India, probably reflecting ancient shared ancestry rather than the Indo-European migration, which had little effect on Indian male lineages. Among the tribal populations, the Birhor (Austro-Asiatic-speaking) and Irula (Dravidian-speaking) are the nearest neighbours of South Asian non-tribal populations, with a common origin in the last few millennia. In contrast, the Riang (Tibeto-Burman-speaking) and Andamanese have their nearest neighbour lineages in East Asia. The Jarawa and Onge shared haplogroup D lineages with each other within the last ~7000 years, but had diverged from Japanese haplogroup D Y-chromosomes ~53000 years ago, most likely by a split from a shared ancestral population. This analysis suggests that Indian populations have complex ancestry which cannot be explained by a single expansion model.
Collapse
Affiliation(s)
- Mayukh Mondal
- Institute of Evolutionary Biology (CSIC-UPF), Universitat Pompeu Fabra, Doctor Aiguader 88 (PRBB), 08003, Barcelona, Catalonia, Spain
| | - Anders Bergström
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA,, UK
| | - Yali Xue
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA,, UK
| | - Francesc Calafell
- Institute of Evolutionary Biology (CSIC-UPF), Universitat Pompeu Fabra, Doctor Aiguader 88 (PRBB), 08003, Barcelona, Catalonia, Spain
| | - Hafid Laayouni
- Institute of Evolutionary Biology (CSIC-UPF), Universitat Pompeu Fabra, Doctor Aiguader 88 (PRBB), 08003, Barcelona, Catalonia, Spain
- Bioinformatics Studies, ESCI-UPF, Pg. Pujades 1, 08003, Barcelona, Spain
| | - Ferran Casals
- Genomics Core Facility, Departament de Ciencies Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Catalonia, Spain
| | | | - Chris Tyler-Smith
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA,, UK.
| | - Jaume Bertranpetit
- Institute of Evolutionary Biology (CSIC-UPF), Universitat Pompeu Fabra, Doctor Aiguader 88 (PRBB), 08003, Barcelona, Catalonia, Spain.
| |
Collapse
|
18
|
Kaur M, Badaruddoza. Population genetic analysis of five northwest Punjabi endogamous groups using microsatellite markers. Meta Gene 2016. [DOI: 10.1016/j.mgene.2016.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
19
|
Kafle MP, Lee V. Systemic lupus erythematosus in Nepal: A review. Lupus 2016; 25:1054-61. [PMID: 26957353 DOI: 10.1177/0961203316637430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 02/12/2016] [Indexed: 11/15/2022]
Abstract
Nepal is a small country that is landlocked between India and China. Several ethnic groups live within the 147,181 km(2) of this country. Geographic diversity ranges from the high Himalayas to the flatlands of the Ganges plains. Lupus nephritis (LN), a complication of systemic lupus erythematosus (SLE), is a common kidney problem in Nepal; but the real incidence and prevalence of SLE in Nepal is largely not known. Here, it more commonly affects people (mostly women) living in the southern flatlands, but SLE is reported to be uncommon further south in India. Even though the disease appears to be common, good quality research is uncommon in Nepali literature. This article was written to provide a review of the articles published to date about SLE in Nepal and to discuss the gaps in knowledge that require further evaluation.
Collapse
Affiliation(s)
- M P Kafle
- Department of Nephrology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal
| | - Vws Lee
- University of Sydney, Westmead Millenium Institute, Westmead Hospital, Westmead, NSW, Australia
| |
Collapse
|
20
|
Genomic reconstruction of the history of extant populations of India reveals five distinct ancestral components and a complex structure. Proc Natl Acad Sci U S A 2016; 113:1594-9. [PMID: 26811443 DOI: 10.1073/pnas.1513197113] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
India, occupying the center stage of Paleolithic and Neolithic migrations, has been underrepresented in genome-wide studies of variation. Systematic analysis of genome-wide data, using multiple robust statistical methods, on (i) 367 unrelated individuals drawn from 18 mainland and 2 island (Andaman and Nicobar Islands) populations selected to represent geographic, linguistic, and ethnic diversities, and (ii) individuals from populations represented in the Human Genome Diversity Panel (HGDP), reveal four major ancestries in mainland India. This contrasts with an earlier inference of two ancestries based on limited population sampling. A distinct ancestry of the populations of Andaman archipelago was identified and found to be coancestral to Oceanic populations. Analysis of ancestral haplotype blocks revealed that extant mainland populations (i) admixed widely irrespective of ancestry, although admixtures between populations was not always symmetric, and (ii) this practice was rapidly replaced by endogamy about 70 generations ago, among upper castes and Indo-European speakers predominantly. This estimated time coincides with the historical period of formulation and adoption of sociocultural norms restricting intermarriage in large social strata. A similar replacement observed among tribal populations was temporally less uniform.
Collapse
|
21
|
Bhandari S, Zhang X, Cui C, Bianba, Liao S, Peng Y, Zhang H, Xiang K, Shi H, Ouzhuluobu, Baimakongzhuo, Gonggalanzi, Liu S, Gengdeng, Wu T, Qi X, Su B. Genetic evidence of a recent Tibetan ancestry to Sherpas in the Himalayan region. Sci Rep 2015; 5:16249. [PMID: 26538459 PMCID: PMC4633682 DOI: 10.1038/srep16249] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/12/2015] [Indexed: 01/13/2023] Open
Abstract
Sherpas living around the Himalayas are renowned as high-altitude mountain climbers but when and where the Sherpa people originated from remains contentious. In this study, we collected DNA samples from 582 Sherpas living in Nepal and Tibet Autonomous Region of China to study the genetic diversity of both their maternal (mitochondrial DNA) and paternal (Y chromosome) lineages. Analysis showed that Sherpas share most of their paternal and maternal lineages with indigenous Tibetans, representing a recently derived sub-lineage. The estimated ages of two Sherpa-specific mtDNA sub-haplogroups (C4a3b1 and A15c1) indicate a shallow genetic divergence between Sherpas and Tibetans less than 1,500 years ago. These findings reject the previous theory that Sherpa and Han Chinese served as dual ancestral populations of Tibetans, and conversely suggest that Tibetans are the ancestral populations of the Sherpas, whose adaptive traits for high altitude were recently inherited from their ancestors in Tibet.
Collapse
Affiliation(s)
- Sushil Bhandari
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoming Zhang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Chaoying Cui
- High Altitude Medical Research Center, School of Medicine, Tibetan University, Lhasa 850000, China
| | - Bianba
- High Altitude Medical Research Center, School of Medicine, Tibetan University, Lhasa 850000, China
| | - Shiyu Liao
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Yi Peng
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Hui Zhang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Kun Xiang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Hong Shi
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Ouzhuluobu
- High Altitude Medical Research Center, School of Medicine, Tibetan University, Lhasa 850000, China
| | - Baimakongzhuo
- High Altitude Medical Research Center, School of Medicine, Tibetan University, Lhasa 850000, China
| | - Gonggalanzi
- High Altitude Medical Research Center, School of Medicine, Tibetan University, Lhasa 850000, China
| | - Shimin Liu
- National Key Laboratory of High Altitude Medicine, High Altitude Medical Research Institute, Xining 810012, China
| | - Gengdeng
- National Key Laboratory of High Altitude Medicine, High Altitude Medical Research Institute, Xining 810012, China
| | - Tianyi Wu
- National Key Laboratory of High Altitude Medicine, High Altitude Medical Research Institute, Xining 810012, China
| | - Xuebin Qi
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Bing Su
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| |
Collapse
|
22
|
Negi N, Tamang R, Pande V, Sharma A, Shah A, Reddy AG, Vishnupriya S, Singh L, Chaubey G, Thangaraj K. The paternal ancestry of Uttarakhand does not imitate the classical caste system of India. J Hum Genet 2015; 61:167-72. [PMID: 26511066 DOI: 10.1038/jhg.2015.121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 08/03/2015] [Accepted: 09/11/2015] [Indexed: 01/17/2023]
Abstract
Although, there have been rigorous research on the Indian caste system by several disciplines, it is still one of the most controversial socioscientific topic. Previous genetic studies on the subcontinent have supported a classical hierarchal sharing of genetic component by various castes of India. In the present study, we have used high-resolution mtDNA and Y chromosomal markers to characterize the genetic structuring of the Uttarakhand populations in the context of neighboring regions. Furthermore, we have tested whether the genetic structuring of caste populations at different social levels of this region, follow the classical chaturvarna system. Interestingly, we found that this region showed a high level of variation for East Eurasian ancestry in both maternal and paternal lines of descent. Moreover, the intrapopulation comparison showed a high level of heterogeneity, likely because of different caste hierarchy, interpolated on asymmetric admixture of populations inhabiting on both sides of the Himalayas.
Collapse
Affiliation(s)
- Neetu Negi
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India.,Department of Biotechnology, Kumaun University, Nainital, Uttarakhand, India
| | - Rakesh Tamang
- Department of Evolutionary Biology, Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia.,Estonian Biocentre, Tartu, Estonia.,Department of Zoology, University of Calcutta, Kolkata, India.,Department of Genetics, Osmania University, Hyderabad, India
| | - Veena Pande
- Department of Biotechnology, Kumaun University, Nainital, Uttarakhand, India
| | - Amrita Sharma
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Anish Shah
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Alla G Reddy
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | | | - Lalji Singh
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India.,Genome Foundation, Hyderabad, India
| | | | | |
Collapse
|
23
|
Palanichamy MG, Mitra B, Zhang CL, Debnath M, Li GM, Wang HW, Agrawal S, Chaudhuri TK, Zhang YP. West Eurasian mtDNA lineages in India: an insight into the spread of the Dravidian language and the origins of the caste system. Hum Genet 2015; 134:637-47. [PMID: 25832481 DOI: 10.1007/s00439-015-1547-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/25/2015] [Indexed: 11/28/2022]
Abstract
There is no indication from the previous mtDNA studies that west Eurasian-specific subclades have evolved within India and played a role in the spread of languages and the origins of the caste system. To address these issues, we have screened 14,198 individuals (4208 from this study) and analyzed 112 mitogenomes (41 new sequences) to trace west Eurasian maternal ancestry. This has led to the identification of two autochthonous subhaplogroups--HV14a1 and U1a1a4, which are likely to have originated in the Dravidian-speaking populations approximately 10.5-17.9 thousand years ago (kya). The carriers of these maternal lineages might have settled in South India during the time of the spread of the Dravidian language. In addition to this, we have identified several subsets of autochthonous U7 lineages, including U7a1, U7a2b, U7a3, U7a6, U7a7, and U7c, which seem to have originated particularly in the higher-ranked caste populations in relatively recent times (2.6-8.0 kya with an average of 5.7 kya). These lineages have provided crucial clues to the differentiation of the caste system that has occurred during the recent past and possibly, this might have been influenced by the Indo-Aryan migration. The remaining west Eurasian lineages observed in the higher-ranked caste groups, like the Brahmins, were found to cluster with populations who possibly arrived from west Asia during more recent times.
Collapse
Affiliation(s)
- Malliya Gounder Palanichamy
- Laboratory for Conservation and Utilization of Bio-resources, Yunnan University, Kunming, 650 091, Yunnan, China,
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Kundu S, Ghosh SK. Trend of different molecular markers in the last decades for studying human migrations. Gene 2014; 556:81-90. [PMID: 25510397 DOI: 10.1016/j.gene.2014.12.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 12/07/2014] [Accepted: 12/11/2014] [Indexed: 12/15/2022]
Abstract
Anatomically modern humans are known to have widely migrated throughout history. Different scientific evidences suggest that the entire human population descended from just several thousand African migrants. About 85,000 years ago, the first wave of human migration was out of Africa, that followed the coasts through the Middle East, into Southern Asia via Sri Lanka, and in due course around Indonesia and into Australia. Another wave of migration between 40,000 and 12,000 years ago brought humans northward into Europe. However, the frozen north limited human expansion in Europe, and created a land bridge, "Bering land bridge", connecting Asia with North America about 25,000 years ago. Although fossil data give the most direct information about our past, it has certain anomalies. So, molecular archeologists are now using different molecular markers to trace the "most recent common ancestor" and also the migration pattern of modern humans. In this study, we have studied the trend of molecular markers and also the methodologies implemented in the last decades (2003-2014). From our observation, we can say that D-loop region of mtDNA and Y chromosome based markers are predominant. Nevertheless, mtDNA, especially the D-loop region, has some unique features, which makes it a more effective marker for tracing prehistoric footprints of modern human populations. Although, natural selection should also be taken into account in studying mtDNA based human migration. As per technology is concerned, Sanger sequencing is the major technique that is being used in almost all studies. But, the emergence of different cost-effective-and-easy-to-handle NGS platforms has increased its popularity over Sanger sequencing in studying human migration.
Collapse
Affiliation(s)
- Sharbadeb Kundu
- Molecular Medicine Laboratory, Department of Biotechnology, Assam University, Silchar, Pin-788011 Assam, India
| | - Sankar Kumar Ghosh
- Molecular Medicine Laboratory, Department of Biotechnology, Assam University, Silchar, Pin-788011 Assam, India.
| |
Collapse
|
25
|
Ralf A, van Oven M, Zhong K, Kayser M. Simultaneous analysis of hundreds of Y-chromosomal SNPs for high-resolution paternal lineage classification using targeted semiconductor sequencing. Hum Mutat 2014; 36:151-9. [PMID: 25338970 DOI: 10.1002/humu.22713] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 10/08/2014] [Indexed: 11/06/2022]
Abstract
SNPs from the non-recombining part of the human Y chromosome (Y-SNPs) are informative to classify paternal lineages in forensic, genealogical, anthropological, and evolutionary studies. Although thousands of Y-SNPs were identified thus far, previous Y-SNP multiplex tools target only dozens of markers simultaneously, thereby restricting the provided Y-haplogroup resolution and limiting their applications. Here, we overcome this shortcoming by introducing a high-resolution multiplex tool for parallel genotyping-by-sequencing of 530 Y-SNPs using the Ion Torrent PGM platform, which allows classification of 432 worldwide Y haplogroups. Contrary to previous Y-SNP multiplex tools, our approach covers branches of the entire Y tree, thereby maximizing the paternal lineage classification obtainable. We used a default DNA input amount of 10 ng per reaction but preliminary sensitivity testing revealed positive results from as little as 100 pg input DNA. Furthermore, we demonstrate that sample pooling using barcodes is feasible, allowing increased throughput for lower per-sample costs. In addition to the wetlab protocol, we provide a software tool for automated data quality control and haplogroup classification. The unique combination of ultra-high marker density and high sensitivity achievable from low amounts of potentially degraded DNA makes this new multiplex tool suitable for a wide range of Y-chromosome applications.
Collapse
Affiliation(s)
- Arwin Ralf
- Department of Forensic Molecular Biology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | | | | | | |
Collapse
|
26
|
Majumder PP, Basu A. A genomic view of the peopling and population structure of India. Cold Spring Harb Perspect Biol 2014; 7:a008540. [PMID: 25147176 DOI: 10.1101/cshperspect.a008540] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Recent advances in molecular and statistical genetics have enabled the reconstruction of human history by studying living humans. The ability to sequence and study DNA by calibrating the rate of accumulation of changes with evolutionary time has enabled robust inferences about how humans have evolved. These data indicate that modern humans evolved in Africa about 150,000 years ago and, consistent with paleontological evidence, migrated out of Africa. And through a series of settlements, demographic expansions, and further migrations, they populated the entire world. One of the first waves of migration from Africa was into India. Subsequent, more recent, waves of migration from other parts of the world have resulted in India being a genetic melting pot. Contemporary India has a rich tapestry of cultures and ecologies. There are about 400 tribal groups and more than 4000 groups of castes and subcastes, speaking dialects of 22 recognized languages belonging to four major language families. The contemporary social structure of Indian populations is characterized by endogamy with different degrees of porosity. The social structure, possibly coupled with large ecological heterogeneity, has resulted in considerable genetic diversity and local genetic differences within India. In this essay, we provide genetic evidence of how India may have been peopled, the nature and extent of its genetic diversity, and genetic structure among the extant populations of India.
Collapse
Affiliation(s)
| | - Analabha Basu
- National Institute of Biomedical Genomics, Kalyani 741251, India
| |
Collapse
|
27
|
Khurana P, Aggarwal A, Mitra S, Italia YM, Saraswathy KN, Chandrasekar A, Kshatriya GK. Y chromosome haplogroup distribution in Indo-European speaking tribes of Gujarat, western India. PLoS One 2014; 9:e90414. [PMID: 24614885 PMCID: PMC3948632 DOI: 10.1371/journal.pone.0090414] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 02/01/2014] [Indexed: 11/20/2022] Open
Abstract
The present study was carried out in the Indo-European speaking tribal population groups of Southern Gujarat, India to investigate and reconstruct their paternal population structure and population histories. The role of language, ethnicity and geography in determining the observed pattern of Y haplogroup clustering in the study populations was also examined. A set of 48 bi-allelic markers on the non-recombining region of Y chromosome (NRY) were analysed in 284 males; representing nine Indo-European speaking tribal populations. The genetic structure of the populations revealed that none of these groups was overtly admixed or completely isolated. However, elevated haplogroup diversity and FST value point towards greater diversity and differentiation which suggests the possibility of early demographic expansion of the study groups. The phylogenetic analysis revealed 13 paternal lineages, of which six haplogroups: C5, H1a*, H2, J2, R1a1* and R2 accounted for a major portion of the Y chromosome diversity. The higher frequency of the six haplogroups and the pattern of clustering in the populations indicated overlapping of haplogroups with West and Central Asian populations. Other analyses undertaken on the population affiliations revealed that the Indo-European speaking populations along with the Dravidian speaking groups of southern India have an influence on the tribal groups of Gujarat. The vital role of geography in determining the distribution of Y lineages was also noticed. This implies that although language plays a vital role in determining the distribution of Y lineages, the present day linguistic affiliation of any population in India for reconstructing the demographic history of the country should be considered with caution.
Collapse
Affiliation(s)
- Priyanka Khurana
- Department of Anthropology, School of Applied Sciences, Dr. Harisingh Gour University, Sagar, Madhya Pradesh, India
| | - Aastha Aggarwal
- South Asia Network for Chronic Disease, Public Health Foundation of India, Delhi, India
| | - Siuli Mitra
- Department of Anthropology, University of Delhi, Delhi, India
| | - Yazdi M. Italia
- Valsad Raktdan Kendra, R.N.C. Free Eye Hospital Complex, Valsad, Gujarat, India
| | | | | | | |
Collapse
|
28
|
Indigenous and foreign Y-chromosomes characterize the Lingayat and Vokkaliga populations of Southwest India. Gene 2013; 526:96-106. [DOI: 10.1016/j.gene.2013.04.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 04/25/2013] [Accepted: 04/26/2013] [Indexed: 11/21/2022]
|
29
|
|
30
|
Eurasiaplex: A forensic SNP assay for differentiating European and South Asian ancestries. Forensic Sci Int Genet 2013; 7:359-66. [DOI: 10.1016/j.fsigen.2013.02.010] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 02/17/2013] [Accepted: 02/23/2013] [Indexed: 01/13/2023]
|
31
|
Chaturvedi S, Crager S, Ladikas M, Muthuswami V, Su Y, Yang H. Promoting an Inclusive Approach to Benefit Sharing: Expanding the Scope of the CBD? BENEFIT SHARING 2013. [PMCID: PMC7121398 DOI: 10.1007/978-94-007-6205-3_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Convention on Biological Diversity (CBD) is a major international agreement to ensure the conservation of biological diversity, the sustainable use of various components of biological diversity, and fair and equitable access and benefit sharing of advances arising from the use of related genetic resources. The CBD excludes human genetic resources. In light of the rapid advances in biotechnology, genetic resources are increasingly being utilised by different types of users and in different industries. This usage is not confined to plants, animals or micro-organisms but includes human genetic resources and sometimes a mix of such resources. In the absence of any international agreement, various national governments are framing their own rules and guidelines. This patchwork of regulation may eventually impede global research efforts. This chapter argues that the CBD is qualified to be the central agency at the global level for the advance of broader benefit sharing frameworks. By implication, the scope of the CBD should be expanded to include human genetic resources.
Collapse
|
32
|
ArunKumar G, Soria-Hernanz DF, Kavitha VJ, Arun VS, Syama A, Ashokan KS, Gandhirajan KT, Vijayakumar K, Narayanan M, Jayalakshmi M, Ziegle JS, Royyuru AK, Parida L, Wells RS, Renfrew C, Schurr TG, Smith CT, Platt DE, Pitchappan R. Population differentiation of southern Indian male lineages correlates with agricultural expansions predating the caste system. PLoS One 2012; 7:e50269. [PMID: 23209694 PMCID: PMC3508930 DOI: 10.1371/journal.pone.0050269] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 10/22/2012] [Indexed: 02/06/2023] Open
Abstract
Previous studies that pooled Indian populations from a wide variety of geographical locations, have obtained contradictory conclusions about the processes of the establishment of the Varna caste system and its genetic impact on the origins and demographic histories of Indian populations. To further investigate these questions we took advantage that both Y chromosome and caste designation are paternally inherited, and genotyped 1,680 Y chromosomes representing 12 tribal and 19 non-tribal (caste) endogamous populations from the predominantly Dravidian-speaking Tamil Nadu state in the southernmost part of India. Tribes and castes were both characterized by an overwhelming proportion of putatively Indian autochthonous Y-chromosomal haplogroups (H-M69, F-M89, R1a1-M17, L1-M27, R2-M124, and C5-M356; 81% combined) with a shared genetic heritage dating back to the late Pleistocene (10–30 Kya), suggesting that more recent Holocene migrations from western Eurasia contributed <20% of the male lineages. We found strong evidence for genetic structure, associated primarily with the current mode of subsistence. Coalescence analysis suggested that the social stratification was established 4–6 Kya and there was little admixture during the last 3 Kya, implying a minimal genetic impact of the Varna (caste) system from the historically-documented Brahmin migrations into the area. In contrast, the overall Y-chromosomal patterns, the time depth of population diversifications and the period of differentiation were best explained by the emergence of agricultural technology in South Asia. These results highlight the utility of detailed local genetic studies within India, without prior assumptions about the importance of Varna rank status for population grouping, to obtain new insights into the relative influences of past demographic events for the population structure of the whole of modern India.
Collapse
Affiliation(s)
- GaneshPrasad ArunKumar
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
- Chettinad Academy of Research and Education, Kelampakkam, Chennai, Tamil Nadu, India
| | - David F. Soria-Hernanz
- National Geographic Society, Washington, District of Columbia, United States of America
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Spain
| | - Valampuri John Kavitha
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
- Department of Biotechnology, Mother Teresa Women's University, Kodaikanal, Tamil Nadu, India
| | | | - Adhikarla Syama
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - Kumaran Samy Ashokan
- Nilgiri Adivasi Welfare Association, Kota Hall Road, Kothagiri, Tamil Nadu, India
| | | | | | | | - Mariakuttikan Jayalakshmi
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - Janet S. Ziegle
- Applied Biosystems, Foster City, California, United States of America
| | - Ajay K. Royyuru
- Computational Biology Group, IBM - Thomas J. Watson Research Center, New York, New York, United States of America
| | - Laxmi Parida
- Computational Biology Group, IBM - Thomas J. Watson Research Center, New York, New York, United States of America
| | - R. Spencer Wells
- National Geographic Society, Washington, District of Columbia, United States of America
| | - Colin Renfrew
- McDonald Institute for Archaeological Research, University of Cambridge, Cambridge, United Kingdom
| | - Theodore G. Schurr
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Chris Tyler Smith
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, United Kingdom
| | - Daniel E. Platt
- Computational Biology Group, IBM - Thomas J. Watson Research Center, New York, New York, United States of America
| | - Ramasamy Pitchappan
- The Genographic Laboratory, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
- Chettinad Academy of Research and Education, Kelampakkam, Chennai, Tamil Nadu, India
- * E-mail:
| | | |
Collapse
|
33
|
Tamang R, Thangaraj K. Genomic view on the peopling of India. INVESTIGATIVE GENETICS 2012; 3:20. [PMID: 23020857 PMCID: PMC3514343 DOI: 10.1186/2041-2223-3-20] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 08/07/2012] [Indexed: 01/11/2023]
Abstract
India is known for its vast human diversity, consisting of more than four and a half thousand anthropologically well-defined populations. Each population differs in terms of language, culture, physical features and, most importantly, genetic architecture. The size of populations varies from a few hundred to millions. Based on the social structure, Indians are classified into various caste, tribe and religious groups. These social classifications are very rigid and have remained undisturbed by emerging urbanisation and cultural changes. The variable social customs, strict endogamy marriage practices, long-term isolation and evolutionary forces have added immensely to the diversification of the Indian populations. These factors have also led to these populations acquiring a set of Indian-specific genetic variations responsible for various diseases in India. Interestingly, most of these variations are absent outside the Indian subcontinent. Thus, this review is focused on the peopling of India, the caste system, marriage practice and the resulting health and forensic implications.
Collapse
Affiliation(s)
- Rakesh Tamang
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500 007, India.
| | | |
Collapse
|
34
|
Pemberton TJ, Li FY, Hanson EK, Mehta NU, Choi S, Ballantyne J, Belmont JW, Rosenberg NA, Tyler-Smith C, Patel PI. Impact of restricted marital practices on genetic variation in an endogamous Gujarati group. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2012; 149:92-103. [PMID: 22729696 DOI: 10.1002/ajpa.22101] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 05/07/2012] [Indexed: 12/15/2022]
Abstract
Recent studies have examined the influence on patterns of human genetic variation of a variety of cultural practices. In India, centuries-old marriage customs have introduced extensive social structuring into the contemporary population, potentially with significant consequences for genetic variation. Social stratification in India is evident as social classes that are defined by endogamous groups known as castes. Within a caste, there exist endogamous groups known as gols (marriage circles), each of which comprises a small number of exogamous gotra (lineages). Thus, while consanguinity is strictly avoided and some randomness in mate selection occurs within the gol, gene flow is limited with groups outside the gol. Gujarati Patels practice this form of "exogamic endogamy." We have analyzed genetic variation in one such group of Gujarati Patels, the Chha Gaam Patels (CGP), who comprise individuals from six villages. Population structure analysis of 1,200 autosomal loci offers support for the existence of distinctive multilocus genotypes in the CGP with respect to both non-Gujaratis and other Gujaratis, and indicates that CGP individuals are genetically very similar. Analysis of Y-chromosomal and mitochondrial haplotypes provides support for both patrilocal and patrilineal practices within the gol, and a low-level of female gene flow into the gol. Our study illustrates how the practice of gol endogamy has introduced fine-scale genetic structure into the population of India, and contributes more generally to an understanding of the way in which marriage practices affect patterns of genetic variation.
Collapse
Affiliation(s)
- Trevor J Pemberton
- Institute for Genetic Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Sharma G, Tamang R, Chaudhary R, Singh VK, Shah AM, Anugula S, Rani DS, Reddy AG, Eaaswarkhanth M, Chaubey G, Singh L, Thangaraj K. Genetic affinities of the central Indian tribal populations. PLoS One 2012; 7:e32546. [PMID: 22393414 PMCID: PMC3290590 DOI: 10.1371/journal.pone.0032546] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 01/27/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The central Indian state Madhya Pradesh is often called as 'heart of India' and has always been an important region functioning as a trinexus belt for three major language families (Indo-European, Dravidian and Austroasiatic). There are less detailed genetic studies on the populations inhabited in this region. Therefore, this study is an attempt for extensive characterization of genetic ancestries of three tribal populations, namely; Bharia, Bhil and Sahariya, inhabiting this region using haploid and diploid DNA markers. METHODOLOGY/PRINCIPAL FINDINGS Mitochondrial DNA analysis showed high diversity, including some of the older sublineages of M haplogroup and prominent R lineages in all the three tribes. Y-chromosomal biallelic markers revealed high frequency of Austroasiatic-specific M95-O2a haplogroup in Bharia and Sahariya, M82-H1a in Bhil and M17-R1a in Bhil and Sahariya. The results obtained by haploid as well as diploid genetic markers revealed strong genetic affinity of Bharia (a Dravidian speaking tribe) with the Austroasiatic (Munda) group. The gene flow from Austroasiatic group is further confirmed by their Y-STRs haplotype sharing analysis, where we determined their founder haplotype from the North Munda speaking tribe, while, autosomal analysis was largely in concordant with the haploid DNA results. CONCLUSIONS/SIGNIFICANCE Bhil exhibited largely Indo-European specific ancestry, while Sahariya and Bharia showed admixed genetic package of Indo-European and Austroasiatic populations. Hence, in a landscape like India, linguistic label doesn't unequivocally follow the genetic footprints.
Collapse
Affiliation(s)
- Gunjan Sharma
- Department of Zoology, Government Motilal Vigyan Mahavidyalaya, Bhopal, India
| | - Rakesh Tamang
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Ruchira Chaudhary
- Department of Zoology, Government Motilal Vigyan Mahavidyalaya, Bhopal, India
- * E-mail: (KT); (RC)
| | | | - Anish M. Shah
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Sharath Anugula
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Deepa Selvi Rani
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Alla G. Reddy
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | | | - Gyaneshwer Chaubey
- Department of Evolutionary Biology, Institute of Molecular and Cell Biology, University of Tartu and Estonian Biocentre, Tartu, Estonia
| | - Lalji Singh
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
- Genome Foundation, Hyderabad, India
- Banaras Hindu University, Varanasi, India
| | - Kumarasamy Thangaraj
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
- * E-mail: (KT); (RC)
| |
Collapse
|
36
|
Nair SP, Geetha A, Jagannath C. Y-short tandem repeat haplotype and paternal lineage of the Ezhava population of Kerala, south India. Croat Med J 2012; 52:344-50. [PMID: 21674830 PMCID: PMC3118723 DOI: 10.3325/cmj.2011.52.344] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIM To analyze the haplotype of the Ezhava population of Kerala, south India, using 8 short tandem repeat (STR) loci on the Y chromosome and trace the paternal genetic lineage of the population. METHODS Whole blood samples (n=104) were collected from unrelated healthy men of the Ezhava population over a period of one year from October 2009. Genomic DNA was extracted by salting out method. All samples were genotyped for the 8 Y-STR loci by the AmpFiSTR Y-filer PCR Amplification Kit. The haplotype and allele frequencies were determined by direct counting and analyzed using Arlequin 3.1 software, and molecular variance was calculated with the Y-chromosome haplotype reference database online analysis tool, www.yhrd.org. RESULTS Among the 104 examined haplotypes, we found 98 unique ones. The average gene diversity was 0.669, with the highest diversity of 0.9462 observed for the biallelic Y-STR marker DYS 385. The allele frequency among DYS loci varied between 0.0096 and 0.75. Out of the 104 haplotypes, 10 were identical to the Jat Sikh population of Punjab, which is the greatest number among the Indian populations, and 4 to the Turkish population, which is the greatest number among the European populations. According to the allele frequency of Y-STR, the Ezhavas were genetically more similar to the Europeans (60%) than to the East Asians (40%). CONCLUSION The vast majority of haplotypes were observed only once, reflecting the enormous genetic heterogeneity of the Ezhavas. Based on the genotype, the Ezhavas showed more resemblance to Jat Sikh population of Punjab and the Turkish populations than to the East Asians, hence indicating a paternal lineage of European origin.
Collapse
Affiliation(s)
- Seema P Nair
- Center for Biotechnology and Nanotechnology, Department of Biotechnology and Biochemical Engineering, Sree Buddha College of Engineering, Kerala, India.
| | | | | |
Collapse
|
37
|
Metspalu M, Romero I, Yunusbayev B, Chaubey G, Mallick C, Hudjashov G, Nelis M, Mägi R, Metspalu E, Remm M, Pitchappan R, Singh L, Thangaraj K, Villems R, Kivisild T. Shared and unique components of human population structure and genome-wide signals of positive selection in South Asia. Am J Hum Genet 2011; 89:731-44. [PMID: 22152676 DOI: 10.1016/j.ajhg.2011.11.010] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 09/06/2011] [Accepted: 11/12/2011] [Indexed: 02/06/2023] Open
Abstract
South Asia harbors one of the highest levels genetic diversity in Eurasia, which could be interpreted as a result of its long-term large effective population size and of admixture during its complex demographic history. In contrast to Pakistani populations, populations of Indian origin have been underrepresented in previous genomic scans of positive selection and population structure. Here we report data for more than 600,000 SNP markers genotyped in 142 samples from 30 ethnic groups in India. Combining our results with other available genome-wide data, we show that Indian populations are characterized by two major ancestry components, one of which is spread at comparable frequency and haplotype diversity in populations of South and West Asia and the Caucasus. The second component is more restricted to South Asia and accounts for more than 50% of the ancestry in Indian populations. Haplotype diversity associated with these South Asian ancestry components is significantly higher than that of the components dominating the West Eurasian ancestry palette. Modeling of the observed haplotype diversities suggests that both Indian ancestry components are older than the purported Indo-Aryan invasion 3,500 YBP. Consistent with the results of pairwise genetic distances among world regions, Indians share more ancestry signals with West than with East Eurasians. However, compared to Pakistani populations, a higher proportion of their genes show regionally specific signals of high haplotype homozygosity. Among such candidates of positive selection in India are MSTN and DOK5, both of which have potential implications in lipid metabolism and the etiology of type 2 diabetes.
Collapse
|
38
|
Kshatriya GK, Aggarwal A, Khurana P, Italia YM. Genomic congruence of Indo-European speaking tribes of western India with Dravidian-speaking populations of southern India: A study of 20 autosomal DNA markers. Ann Hum Biol 2011; 38:583-91. [PMID: 21561300 DOI: 10.3109/03014460.2011.577455] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Gautam K Kshatriya
- Department of Anthropology, University of Delhi , Delhi - 110007, India.
| | | | | | | |
Collapse
|
39
|
The Soliga, an isolated tribe from Southern India: genetic diversity and phylogenetic affinities. J Hum Genet 2011; 56:258-69. [PMID: 21307856 DOI: 10.1038/jhg.2010.173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
India's role in the dispersal of modern humans can be explored by investigating its oldest inhabitants: the tribal people. The Soliga people of the Biligiri Rangana Hills, a tribal community in Southern India, could be among the country's first settlers. This forest-bound, Dravidian speaking group, lives isolated, practicing subsistence-level agriculture under primitive conditions. The aim of this study is to examine the phylogenetic relationships of the Soligas in relation to 29 worldwide, geographically targeted, reference populations. For this purpose, we employed a battery of 15 hypervariable autosomal short tandem repeat loci as markers. The Soliga tribe was found to be remarkably different from other Indian populations including other southern Dravidian-speaking tribes. In contrast, the Soliga people exhibited genetic affinity to two Australian aboriginal populations. This genetic similarity could be attributed to the 'Out of Africa' migratory wave(s) along the southern coast of India that eventually reached Australia. Alternatively, the observed genetic affinity may be explained by more recent migrations from the Indian subcontinent into Australia.
Collapse
|
40
|
Ghosh T, Kalpana D, Mukerjee S, Mukherjee M, Sharma AK, Nath S, Rathod VR, Thakar MK, Jha GN. Genetic diversity of 17 Y-short tandem repeats in Indian population. Forensic Sci Int Genet 2011; 5:363-7. [PMID: 21277272 DOI: 10.1016/j.fsigen.2010.12.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Revised: 10/31/2010] [Accepted: 12/24/2010] [Indexed: 10/18/2022]
Abstract
Seventeen short tandem repeats (DYS389I, DYS390, DYS389II, DYS19, DYS385a/b, DYS393, DYS391, DYS392, DYS439, DYS438, DYS456, DYS458, DYS635, Y(GATA)H4, DYS437, and DYS448) from the non-recombining region of the human Y-chromosome were analyzed in 750 unrelated males representing four major linguistic families of India using AmpFlSTR(®) Yfiler(®) PCR Amplification kit. A total of 612 distinct haplotypes were observed, of which 545 were unique. Rare alleles for the loci DYS456, DYS458, DYS635, Y(GATA)H4, and duplication at the loci DYS389I and DYS389II were also observed. To understand the genetic diversity of the Indian population, and utility of Y-STRs in forensics, the locus diversity, haplotype diversity, and discrimination capacity in all populations was determined. MDS plot based on pairwise Φ(st) and AMOVA revealed the high genetic heterogeneity among the Indian populations due to linguistic diversity and social stratification.
Collapse
Affiliation(s)
- Tania Ghosh
- Central Forensic Science Laboratory, Directorate of Forensic Science Services, Ministry of Home Affairs, Govt. of India, 30 Gorachand Road, Park Circus, Kolkata 700014, West Bengal, India
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Pamjav H, Zalán A, Béres J, Nagy M, Chang YM. Genetic structure of the paternal lineage of the Roma people. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2011; 145:21-9. [PMID: 21484758 DOI: 10.1002/ajpa.21454] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 10/19/2010] [Indexed: 11/10/2022]
Abstract
According to written sources, Roma (Romanies, Gypsies) arrived in the Balkans around 1,000 years ago from India and have subsequently spread through several parts of Europe. Genetic data, particularly from the Y chromosome, have supported this model, and can potentially refine it. We now provide an analysis of Y-chromosomal markers from five Roma and two non-Roma populations (N = 787) in order to investigate the genetic relatedness of the Roma population groups to one another, and to gain further understanding of their likely Indian origins, the genetic contribution of non-Roma males to the Roma populations, and the early history of their splits and migrations in Europe. The two main sources of the Roma paternal gene pool were identified as South Asian and European. The reduced diversity and expansion of H1a-M82 lineages in all Roma groups imply shared descent from a single paternal ancestor in the Indian subcontinent. The Roma paternal gene pool also contains a specific subset of E1b1b1a-M78 and J2a2-M67 lineages, implying admixture during early settlement in the Balkans and the subsequent influx into the Carpathian Basin. Additional admixture, evident in the low and moderate frequencies of typical European haplogroups I1-M253, I2a-P37.2, I2b-M223, R1b1-P25, and R1a1-M198, has occurred in a more population-specific manner.
Collapse
Affiliation(s)
- Horolma Pamjav
- Institute of Forensic Medicine, Network of Forensic Science Institutes, Ministry of Administration and Justice, Budapest, Hungary.
| | | | | | | | | |
Collapse
|
42
|
Thangaraj K, Naidu BP, Crivellaro F, Tamang R, Upadhyay S, Sharma VK, Reddy AG, Walimbe SR, Chaubey G, Kivisild T, Singh L. The influence of natural barriers in shaping the genetic structure of Maharashtra populations. PLoS One 2010; 5:e15283. [PMID: 21187967 PMCID: PMC3004917 DOI: 10.1371/journal.pone.0015283] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Accepted: 11/04/2010] [Indexed: 11/29/2022] Open
Abstract
Background The geographical position of Maharashtra state makes it rather essential to study the dispersal of modern humans in South Asia. Several hypotheses have been proposed to explain the cultural, linguistic and geographical affinity of the populations living in Maharashtra state with other South Asian populations. The genetic origin of populations living in this state is poorly understood and hitherto been described at low molecular resolution level. Methodology/Principal Findings To address this issue, we have analyzed the mitochondrial DNA (mtDNA) of 185 individuals and NRY (non-recombining region of Y chromosome) of 98 individuals belonging to two major tribal populations of Maharashtra, and compared their molecular variations with that of 54 South Asian contemporary populations of adjacent states. Inter and intra population comparisons reveal that the maternal gene pool of Maharashtra state populations is composed of mainly South Asian haplogroups with traces of east and west Eurasian haplogroups, while the paternal haplogroups comprise the South Asian as well as signature of near eastern specific haplogroup J2a. Conclusions/Significance Our analysis suggests that Indian populations, including Maharashtra state, are largely derived from Paleolithic ancient settlers; however, a more recent (∼10 Ky older) detectable paternal gene flow from west Asia is well reflected in the present study. These findings reveal movement of populations to Maharashtra through the western coast rather than mainland where Western Ghats-Vindhya Mountains and Narmada-Tapti rivers might have acted as a natural barrier. Comparing the Maharastrian populations with other South Asian populations reveals that they have a closer affinity with the South Indian than with the Central Indian populations.
Collapse
Affiliation(s)
| | | | - Federica Crivellaro
- Leverhulme Centre of Human Evolutionary Studies, University of Cambridge, Cambridge, United Kingdom
| | - Rakesh Tamang
- Centre for Cellular and Molecular Biology, Hyderabad, India
| | | | | | - Alla G. Reddy
- Centre for Cellular and Molecular Biology, Hyderabad, India
| | - S. R. Walimbe
- Department of Archaeology, Deccan College Post-Graduate and Research Institute, Pune, India
| | - Gyaneshwer Chaubey
- Centre for Cellular and Molecular Biology, Hyderabad, India
- Department of Evolutionary Biology, Institute of Molecular and Cell Biology, University of Tartu and Estonian Biocentre, Tartu, Estonia
| | - Toomas Kivisild
- Leverhulme Centre of Human Evolutionary Studies, University of Cambridge, Cambridge, United Kingdom
- Department of Evolutionary Biology, Institute of Molecular and Cell Biology, University of Tartu and Estonian Biocentre, Tartu, Estonia
| | - Lalji Singh
- Centre for Cellular and Molecular Biology, Hyderabad, India
- * E-mail: (KT); (LS)
| |
Collapse
|
43
|
Xing J, Watkins WS, Hu Y, Huff CD, Sabo A, Muzny DM, Bamshad MJ, Gibbs RA, Jorde LB, Yu F. Genetic diversity in India and the inference of Eurasian population expansion. Genome Biol 2010; 11:R113. [PMID: 21106085 PMCID: PMC3156952 DOI: 10.1186/gb-2010-11-11-r113] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 10/29/2010] [Accepted: 11/24/2010] [Indexed: 01/11/2023] Open
Abstract
Background Genetic studies of populations from the Indian subcontinent are of great interest because of India's large population size, complex demographic history, and unique social structure. Despite recent large-scale efforts in discovering human genetic variation, India's vast reservoir of genetic diversity remains largely unexplored. Results To analyze an unbiased sample of genetic diversity in India and to investigate human migration history in Eurasia, we resequenced one 100-kb ENCODE region in 92 samples collected from three castes and one tribal group from the state of Andhra Pradesh in south India. Analyses of the four Indian populations, along with eight HapMap populations (692 samples), showed that 30% of all SNPs in the south Indian populations are not seen in HapMap populations. Several Indian populations, such as the Yadava, Mala/Madiga, and Irula, have nucleotide diversity levels as high as those of HapMap African populations. Using unbiased allele-frequency spectra, we investigated the expansion of human populations into Eurasia. The divergence time estimates among the major population groups suggest that Eurasian populations in this study diverged from Africans during the same time frame (approximately 90 to 110 thousand years ago). The divergence among different Eurasian populations occurred more than 40,000 years after their divergence with Africans. Conclusions Our results show that Indian populations harbor large amounts of genetic variation that have not been surveyed adequately by public SNP discovery efforts. Our data also support a delayed expansion hypothesis in which an ancestral Eurasian founding population remained isolated long after the out-of-Africa diaspora, before expanding throughout Eurasia.
Collapse
Affiliation(s)
- Jinchuan Xing
- Department of Human Genetics, Eccles Institute of Human Genetics, University of Utah, 15 North 2030 East, Salt Lake City, UT 84112, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Saraswathy KN, Meitei SY, Gupta V, Murry B, Sachdeva MP, Ghosh PK. Brief communication: Allelic and haplotypic structure at the DRD2 locus among five North Indian caste populations. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2010; 141:651-7. [PMID: 20091846 DOI: 10.1002/ajpa.21246] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The dopamine D2 receptor (DRD2) gene, with its known human-specific derived alleles that can facilitate haplotype reconstruction, presents an important locus for anthropological studies. The three sites (TaqIA, TaqIB, and TaqID) of the DRD2 gene are widely studied in various world populations. However, no work has been previously published on DRD2 gene polymorphisms among North Indian populations. Thus, the present study attempts to understand the genetic structure of North Indian upper caste populations using the allele and haplotype frequencies and distribution patterns of the three TaqI sites of the DRD2 gene. Two hundred forty-six blood samples were collected from five upper caste populations of Himachal Pradesh (Brahmin, Rajput and Jat) and Delhi (Aggarwal and Sindhi), and analysis was performed using standard protocols. All three sites were found to be polymorphic in all five of the studied populations. Uniform allele frequency distribution patterns, low heterozygosity values, the sharing of five common haplotypes, and the absence of two of the eight possible haplotypes observed in this study suggest a genetic proximity among the selected populations. The results also indicate a major genetic contribution from Eurasia to North Indian upper castes, apart from the common genetic unity of Indian populations. The study also demonstrates a greater genetic inflow among North Indian caste populations than is observed among South Indian caste and tribal populations.
Collapse
Affiliation(s)
- Kallur N Saraswathy
- Biochemical and Molecular Anthropology Laboratory, Department of Anthropology, University of Delhi (North Campus), Delhi 110007, India.
| | | | | | | | | | | |
Collapse
|
45
|
Kim K, Brenner CH, Mair VH, Lee KH, Kim JH, Gelegdorj E, Batbold N, Song YC, Yun HW, Chang EJ, Lkhagvasuren G, Bazarragchaa M, Park AJ, Lim I, Hong YP, Kim W, Chung SI, Kim DJ, Chung YH, Kim SS, Lee WB, Kim KY. A western Eurasian male is found in 2000-year-old elite Xiongnu cemetery in Northeast Mongolia. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2010; 142:429-40. [PMID: 20091844 DOI: 10.1002/ajpa.21242] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We analyzed mitochondrial DNA (mtDNA), Y-chromosome single nucleotide polymorphisms (Y-SNP), and autosomal short tandem repeats (STR) of three skeletons found in a 2,000-year-old Xiongnu elite cemetery in Duurlig Nars of Northeast Mongolia. This study is one of the first reports of the detailed genetic analysis of ancient human remains using the three types of genetic markers. The DNA analyses revealed that one subject was an ancient male skeleton with maternal U2e1 and paternal R1a1 haplogroups. This is the first genetic evidence that a male of distinctive Indo-European lineages (R1a1) was present in the Xiongnu of Mongolia. This might indicate an Indo-European migration into Northeast Asia 2,000 years ago. Other specimens are a female with mtDNA haplogroup D4 and a male with Y-SNP haplogroup C3 and mtDNA haplogroup D4. Those haplogroups are common in Northeast Asia. There was no close kinship among them. The genetic evidence of U2e1 and R1a1 may help to clarify the migration patterns of Indo-Europeans and ancient East-West contacts of the Xiongnu Empire. Artifacts in the tombs suggested that the Xiongnu had a system of the social stratification. The West Eurasian male might show the racial tolerance of the Xiongnu Empire and some insight into the Xiongnu society.
Collapse
Affiliation(s)
- Kijeong Kim
- Institute for Medical Sciences, College of Medicine, Chung-Ang University, Seoul, South Korea, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
|
47
|
Yadav B, Raina A, Dogra TD. Genetic polymorphisms for 17 Y-chromosomal STR haplotypes in Jammu and Kashmir Saraswat Brahmin population. Leg Med (Tokyo) 2010; 12:249-55. [PMID: 20621539 DOI: 10.1016/j.legalmed.2010.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 04/05/2010] [Accepted: 05/06/2010] [Indexed: 10/19/2022]
Abstract
In this study 17 Y-chromosomal STRs (including DYS19, DYS389I, DS389II, DYS390, DYS391, DYS392, DYS393, DYS385a/b, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635 and Y GATA H4) were analysed using blood samples of 122 unrelated male individuals belonging to Saraswat Brahmin community from Jammu (ID YP000599) and Kashmir (ID YP000600) region of J&K state of India. The allelic frequency distribution and haplotype diversity of 17 Y-chromosomal STR for both the populations were calculated. In the Kashmiri Saraswat group, a total of 109 haplotypes were identified in 122 individuals, of these haplotypes, 101 were found only once. The gene diversity values of STR loci ranged from 0.4813 (DYS391) to 0.8645 (DYS385a/b) for Jammu & Kashmiri Saraswat Brahmins.
Collapse
Affiliation(s)
- Bhuvnesh Yadav
- DNA Fingerprinting Laboratory, Department of Forensic Medicine and Toxicology, All India Institute of Medical Sciences, New Delhi 110029, India
| | | | | |
Collapse
|
48
|
|
49
|
Barbujani G, Colonna V. Human genome diversity: frequently asked questions. Trends Genet 2010; 26:285-95. [PMID: 20471132 DOI: 10.1016/j.tig.2010.04.002] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 04/14/2010] [Accepted: 04/14/2010] [Indexed: 11/15/2022]
Abstract
Despite our relatively large population size, humans are genetically less variable than other primates. Many allele frequencies and statistical descriptors of genome diversity form broad gradients, tracing the main expansion from Africa, local migrations, and sometimes adaptation. However, this continuous variation is discordant across loci, and principally seems to reflect different blends of common and often cosmopolitan alleles rather than the presence of distinct gene pools in different regions of the world. The elusive structure of human populations could lead to spurious associations if the effects of shared ancestry are not properly dealt with; indeed, this is among the causes (although not the only one) of the difficulties encountered in discovering the loci responsible for quantitative traits and complex diseases. However, the rapidly growing body of data on our genomic diversity has already cast new light on human population history and is now revealing intricate biological relationships among individuals and populations of our species.
Collapse
Affiliation(s)
- Guido Barbujani
- Department of Biology and Evolution, University of Ferrara, 44121 Ferrara, Italy.
| | | |
Collapse
|
50
|
de Filippo C, Heyn P, Barham L, Stoneking M, Pakendorf B. Genetic perspectives on forager-farmer interaction in the Luangwa valley of Zambia. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2010; 141:382-94. [PMID: 19918997 DOI: 10.1002/ajpa.21155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The transformation from a foraging way of life to a reliance on domesticated plants and animals often led to the expansion of agropastoralist populations at the expense of hunter-gatherers (HGs). In Africa, one of these expansions involved the Niger-Congo Bantu-speaking populations that started to spread southwards from Cameroon/Nigeria approximately 4,000 years ago, bringing agricultural technologies. Genetic studies have shown different degrees of gene flow (sometimes involving sex-biased migrations) between Bantu agriculturalists and HGs. Although these studies have covered many parts of sub-Saharan Africa, the central part (e.g. Zambia) was not yet studied, and the interactions between immigrating food-producers and local HGs are still unclear. Archeological evidence from the Luangwa Valley of Zambia suggests a long period of coexistence ( approximately 1,700 years) of early food-producers and HGs. To investigate if this apparent coexistence was accompanied by genetic admixture, we analyzed the mtDNA control region, Y chromosomal unique event polymorphisms, and 12 associated Y- short tandem repeats in two food-producing groups (Bisa and Kunda) that live today in the Luangwa Valley, and compared these data with available published data on African HGs. Our results suggest that both the Bisa and Kunda experienced at most low levels of admixture with HGs, and these levels do not differ between the maternal and paternal lineages. Coalescent simulations indicate that the genetic data best fit a demographic scenario with a long divergence (62,500 years) and little or no gene flow between the ancestors of the Bisa/Kunda and existing HGs. This scenario contrasts with the archaeological evidence for a long period of coexistence between the two different communities in the Luangwa Valley, and suggests a process of sociocultural boundary maintenance may have characterized their interaction.
Collapse
Affiliation(s)
- Cesare de Filippo
- Max Planck Institute for Evolutionary Anthropology, Leipzig D-04103, Germany.
| | | | | | | | | |
Collapse
|