A Common Genetic Origin for Early Farmers from Mediterranean Cardial and Central European LBK Cultures
Open accessAbstract
The spread of farming out of the Balkans and into the rest of Europe followed two distinct routes: An initial expansion represented by the Impressa and Cardial traditions, which followed the Northern Mediterranean coastline; and another expansion represented by the LBK (Linearbandkeramik) tradition, which followed the Danube River into Central Europe. Although genomic data now exist from samples representing the second migration, such data have yet to be successfully generated from the initial Mediterranean migration. To address this, we generated the complete genome of a 7,400-year-old Cardial individual (CB13) from Cova Bonica in Vallirana (Barcelona), as well as partial nuclear data from five others excavated from different sites in Spain and Portugal. CB13 clusters with all previously sequenced early European farmers and modern-day Sardinians. Furthermore, our analyses suggest that both Cardial and LBK peoples derived from a common ancient population located in or around the Balkan Peninsula. The Iberian Cardial genome also carries a discernible hunter-gatherer genetic signature that likely was not acquired by admixture with local Iberian foragers. Our results indicate that retrieving ancient genomes from similarly warm Mediterranean environments such as the Near East is technically feasible.
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The dataset combines the newly reported ancient individuals with previously published ancient data to form a dataset of 281 ancient individuals.
“We combined our data with previously published ancient data7,8,9,10,8,10-15 to form a dataset of 281 ancient individuals.”
From Genomic insights into the origin of farming in the ancient Near East (2016) · cites this paper as [14]
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Cites
IntCal13 and Marine13 radiocarbon age calibration curves 0–50,000 years cal BP
Reimer, P. J., Bard, E., Bayliss, A., Beck, J. W., Blackwell, P. G., Ramsey, C. B., Buck, C. E., Cheng, H., Edwards, R. L., Friedrich, M., et al. (2013) · Radiocarbon · doi:10.2458/azu_js_rc.55.16947 · Cited by 14,591 · see citing works
An integrated map of genetic variation from 1,092 human genomes
The 1000 Genomes Project Consortium (2012) · Nature · doi:10.1038/nature11632 · Cited by 7,711 · see citing works
Inference of population splits and mixtures from genome-wide allele frequency data
Pickrell, J. K., & Pritchard, J. K. (2012) · PLoS Genetics · doi:10.1371/journal.pgen.1002967 · Cited by 2,731 · see citing works
Massive migration from the steppe was a source for Indo-European languages in Europe
Haak, W., Lazaridis, I., Patterson, N., Rohland, N., Mallick, S., Llamas, B., Brandt, G., Nordenfelt, S., Harney, E., Stewardson, K., et al. (2015) · Nature · doi:10.1038/nature14317 · Cited by 1,940 · see citing works
Reconstructing Indian population history
Reich, D., Thangaraj, K., Patterson, N., Price, A. L., & Singh, L. (2009) · Nature · doi:10.1038/nature08365 · Cited by 1,674 · see citing works
Population genomics of Bronze Age Eurasia
Allentoft, M. E., Sikora, M., Sjögren, K.-G., Rasmussen, S., Rasmussen, M., Stenderup, J., Damgaard, P. B., Schroeder, H., Ahlström, T., Vinner, L., et al. (2015) · Nature · doi:10.1038/nature14507 · Cited by 1,550 · see citing works
Self-citationAncient human genomes suggest three ancestral populations for present-day Europeans
Lazaridis, I., Patterson, N., Mittnik, A., Renaud, G., Mallick, S., Kirsanow, K., Sudmant, P. H., Schraiber, J. G., Castellano, S., Lipson, M., et al. (2014) · Nature · doi:10.1038/nature13673 · Cited by 1,357 · see citing works
Upper Palaeolithic Siberian genome reveals dual ancestry of Native Americans
Raghavan, M., Skoglund, P., Graf, K. E., Metspalu, M., Albrechtsen, A., Moltke, I., Rasmussen, S., Stafford Jr, T. W., Orlando, L., Metspalu, E., et al. (2014) · Nature · doi:10.1038/nature12736 · Cited by 963 · see citing works
A Revised Timescale for Human Evolution Based on Ancient Mitochondrial Genomes
Fu, Q., Mittnik, A., Johnson, P. L. F., Bos, K., Lari, M., Bollongino, R., Sun, C., Giemsch, L., Schmitz, R., Burger, J., et al. (2013) · Current Biology · doi:10.1016/j.cub.2013.02.044 · Cited by 709 · see citing works
The Origins of Lactase Persistence in Europe
Itan, Y., Powell, A., Beaumont, M. A., Burger, J., & Thomas, M. G. (2009) · PLoS Computational Biology · doi:10.1371/journal.pcbi.1000491 · Cited by 569 · see citing works
New insights into the Tyrolean Iceman's origin and phenotype as inferred by whole-genome sequencing
Keller, A., Graefen, A., Ball, M., Matzas, M., Boisguerin, V., Maixner, F., Leidinger, P., Backes, C., Khairat, R., Forster, M., et al. (2012) · Nature Communications · doi:10.1038/ncomms1701 · Cited by 437 · see citing works
Identifying Recent Adaptations in Large-Scale Genomic Data
Grossman, S. R., Andersen, K. G., Shlyakhter, I., Tabrizi, S., Winnicki, S., Yen, A., Park, D. J., Griesemer, D., Karlsson, E. K., Wong, S. H., et al. (2013) · Cell · doi:10.1016/j.cell.2013.01.035 · Cited by 368 · see citing works
Genomic structure in Europeans dating back at least 36,200 years
Seguin-Orlando, A., Korneliussen, T. S., Sikora, M., Malaspinas, A.-S., Manica, A., Moltke, I., Albrechtsen, A., Ko, A., Margaryan, A., Moiseyev, V., et al. (2014) · Science · doi:10.1126/science.aaa0114 · Cited by 315 · see citing works
Walsh, S., Chaitanya, L., Clarisse, L., Wirken, L., Draus-Barini, J., Kovatsi, L., Maeda, H., Ishikawa, T., Sijen, T., de Knijff, P., et al. (2014) · Forensic Science International: Genetics · doi:10.1016/j.fsigen.2013.12.006 · Cited by 240 · see citing works
The timing of pigmentation lightening in Europeans
Beleza, S., Santos, A. M., McEvoy, B., Alves, I., Martinho, C., Cameron, E., Shriver, M. D., Parra, E. J., & Rocha, J. (2013) · Molecular Biology and Evolution · doi:10.1093/molbev/mss207 · Cited by 156 · cited 2× · see citing works
“screen for phenotypic traits of interest that have been the subject of recent natural selection in Europeans, according to several studies (Beleza et al. 2013; Grossman et al. 2013).”
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Flagged first, then by citations
Research works printed but not linked: 40
- Alexander DH Novembre J Lange K 2009 Fast model-based estimation of ancestry in unrelated individuals. Genome Res. 19: 1655– 1664. 19648217 PMC2752134
- Andrews RM Kubacka I Chinnery PF Lightowlers RN Turnbull DM Howell N 1999 Reanalysis and revision of the Cambridge reference sequence for human mitochondrial DNA. Nat Genet. 23: 147. 10508508
- Brandt G Haak W Adler CJ Roth C Szécsényi-Nagy A Karimnia S Möller-Rieker S Meller H Ganslmeier R Friederich S 2013 Ancient DNA reveals key stages in the formation of central European mitochondrial genetic diversity. Science 342: 257– 261. 24115443 PMC4039305
- Briggs AW Stenzel U Johnson PLF Green RE Kelso J Prüfer K Meyer M Krause J Ronan MT Lachmann M 2007 Patterns of damage in genomic DNA sequences from a Neandertal. Proc Natl Acad Sci U S A. 104: 14616– 14621. 17715061 PMC1976210
- Brotherton P Endicott P Sanchez JJ Beaumont M Barnett R Austin J Cooper A 2007 Novel high-resolution characterization of ancient DNA reveals C > U-type base modification events as the sole cause of post mortem miscoding lesions. Nucleic Acids Res. 35: 5717– 5728. 17715147 PMC2034480
- Cardoso S Valverde L Alfonso-Sánchez MA Palencia-Madrid L Elcoroaristizabal X Algorta J Catarino S Arteta D Herrera RJ Zarrabeitia MT 2013 The expanded mtDNA phylogeny of the Franco-Cantabrian region upholds the pre-neolithic genetic substrate of Basques. PLoS One 8: e67835. 23844106 PMC3700859
- Carpenter ML Buenrostro JD Valdiosera C Schroeder H Allentoft ME Sikora M Rasmussen M Gravel S Guillén S Nekhrizov G 2013 Pulling out the 1%: Whole-genome capture for the targeted enrichment of ancient DNA sequencing libraries. Am J Hum Genet. 93: 852– 864. 24568772 PMC3824117
- Cavalli-Sforza LL Menozzi P Piazza A 1994 The history and geography of human genes. Princeton (NJ): Princeton University Press.
- Damgaard PB Margaryan A Schroeder H Orlando L Willerslev E Allentoft ME 2015 Improving access to endogenous DNA in ancient bones and teeth. Sci Rep. 5: 11184. 26081994 PMC4472031
- Deguilloux M-F Soler L Pemonge M-H Scarre C Joussaume R Laporte L 2011 News from the west: ancient DNA from a French megalithic burial chamber. Am J Phys Anthropol. 144: 108– 118. 20717990
- Der Sarkissian C Ermini L Jónsson H Alekseev AN Crubezy E Shapiro B Orlando L 2014 Shotgun microbial profiling of fossil remains. Mol Ecol. 23: 1780– 1798. 24612293
- Durand EY Patterson N Reich D Slatkin M 2011 Testing for ancient admixture between closely related populations. Mol Biol Evol. 28: 2239– 2252. 21325092 PMC3144383
- Fu Q Li H Moorjani P Jay F Slepchenko SM Bondarev AA Johnson PLF Aximu-Petri A Prüfer K de Filippo C 2014 Genome sequence of a 45,000-year-old modern human from western Siberia. Nature 514: 445– 449. 25341783 PMC4753769
- Gamba C Fernández E Tirado M Deguilloux MF Pemonge MH Utrilla P Edo M Molist M Rasteiro R Chikhi L 2012 Ancient DNA from an Early Neolithic Iberian population supports a pioneer colonization by first farmers. Mol Ecol. 21: 45– 56. 22117930
- Gamba C Jones ER Teasdale MD McLaughlin RL Gonzalez-Fortes G Mattiangeli V Domboróczki L Kővári I Pap I Anders A 2014 Genome flux and stasis in a five millennium transect of European prehistory. Nat Commun. 5: 5257. 25334030 PMC4218962
- García-Garcerà M Gigli E Sanchez-Quinto F Ramirez O Calafell F Civit S Lalueza-Fox C 2011 Fragmentation of contaminant and endogenous DNA in ancient samples determined by shotgun sequencing; prospects for human palaeogenomics. PLoS One 6: e24161. 21904610 PMC3164143
- Hofreiter M Paijmans JLA Goodchild H Speller CF Barlow A Fortes GG Thomas JA Ludwig A Collins MJ 2014 The future of ancient DNA: technical advances and conceptual shifts. Bioessays 37: 284– 293. 25413709
- Jónsson H Ginolhac A Schubert M Johnson PLF Orlando L 2013 mapDamage2.0: fast approximate Bayesian estimates of ancient DNA damage parameters. Bioinformatics 29: 1682– 1684. 23613487 PMC3694634
- Kloss-Brandstätter A Pacher D Schönherr S Weissensteiner H Binna R Specht G Kronenberg F 2011 HaploGrep: a fast and reliable algorithm for automatic classification of mitochondrial DNA haplogroups. Hum Mutat. 32: 25– 32. 20960467
- Laayouni H Calafell F Bertranpetit J 2010 A genome-wide survey does not show the genetic distinctiveness of Basques. Hum Genet. 127: 455– 458. 20157828
- Lacan M Keyser C Ricaut F-X Brucato N Duranthon F Guilaine J 2011 Ancient DNA reveals male diffusion through the Neolithic Mediterranean route. Proc Natl Acad Sci U S A. 108: 9788– 9791. 21628562 PMC3116412
- Lacan M Keyser C Ricaut F-X Brucato N Tarrús J Bosch A Guilaine J Crubézy E Ludes B 2011 Ancient DNA suggests the leading role played by men in the Neolithic dissemination. Proc Natl Acad Sci U S A. 108: 18255– 18259. 22042855 PMC3215063
- Lee EJ Makarewicz C Renneberg R Harder M Krause-Kyora B Müller S Ostritz S Fehren-Schmitz L Schreiber S Müller J 2012 Emerging genetic patterns of the european neolithic: perspectives from a late neolithic bell beaker burial site in Germany. Am J Phys Anthropol. 148: 571– 579. 22552938
- Li H Durbin R 2009 Fast and accurate short read alignment with Burrows–Wheeler transform. Bioinformatics 25: 1754– 1760. 19451168 PMC2705234
- Li H Handsaker B Wysoker A Fennell T Ruan J Homer N Marth G Abecasis G Durbin R 2009 The Sequence Alignment/Map format and SAMtools. Bioinformatics 25: 2078– 2079. 19505943 PMC2723002
- Lindgreen S 2012 AdapterRemoval: easy cleaning of next-generation sequencing reads. BMC Res Notes. 5: 337. 22748135 PMC3532080
- McKenna A Hanna M Banks E Sivachenko A Cibulskis K Kernytsky A Garimella K Altshuler D Gabriel S Daly M 2010 The Genome Analysis Toolkit: a MapReduce framework for analyzing next-generation DNA sequencing data. Genome Res. 20: 1297– 1303. 20644199 PMC2928508
- Meyer M Kircher M 2010 Illumina sequencing library preparation for highly multiplexed target capture and sequencing. Cold Spring Harb Protoc. Available from: http://dx.doi.org/10.1101/prot5448 · DOI
- Olalde I Allentoft ME Sánchez-Quinto F Santpere G Chiang CWK DeGiorgio M Prado-Martinez J Rodríguez JA Rasmussen S Quilez J 2014 Derived immune and ancestral pigmentation alleles in a 7,000-year-old Mesolithic European. Nature 507: 225– 228. 24463515 PMC4269527
- Orlando L Ginolhac A Raghavan M Vilstrup J Rasmussen M Magnussen K Steinmann KE Kapranov P Thompson JF Zazula G 2011 True single-molecule DNA sequencing of a pleistocene horse bone. Genome Res. 21: 1705– 1719. 21803858 PMC3202287
- Patterson N Price AL Reich D 2006 Population structure and eigenanalysis. PLoS Genet. 2: e190. 17194218 PMC1713260
- Purcell S Neale B Todd-brown K Thomas L Ferreira MAR Bender D Maller J Sklar P Bakker PIW De Daly MJ 2007 PLINK: a tool set for whole-genome association and population-based linkage analyses. Am J Hum Genet. 81: 559– 575. 17701901 PMC1950838
- Rohland N Hofreiter M 2007 Ancient DNA extraction from bones and teeth. Nat Protoc. 2: 1756– 1762. 17641642
- Sánchez-Quinto F Schroeder H Ramirez O Avila-Arcos MC Pybus M Olalde I Velazquez AMV Marcos MEP Encinas JMV Bertranpetit J 2012 Genomic affinities of two 7,000-year-old Iberian hunter-gatherers. Curr Biol. 22: 1494– 1499. 22748318
- Schroeder H Ávila-Arcos MC Malaspinas A-S Poznik GD Sandoval-Velasco M Carpenter ML Moreno-Mayar JV Sikora M Johnson PLF Allentoft ME 2015 Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean. Proc Natl Acad Sci U S A. 112: 3669– 3673. 25755263 PMC4378422
- Skoglund P Malmström H Omrak A Raghavan M Valdiosera C Günther T Hall P Tambets K Parik J Karl-Göran S 2014 Genomic diversity and admixture differs for stone-age Scandinavian foragers and farmers. Science 201: 786– 792. 24762536
- Skoglund P Malmström H Raghavan M Storå J Hall P Willerslev E Gilbert MTP Götherström A Jakobsson M 2012 Origins and genetic legacy of Neolithic farmers and hunter-gatherers in Europe. Science 336: 466– 469. 22539720
- Walsh S Liu F Wollstein A Kovatsi L Ralf A Kosiniak-Kamysz A Branicki W Kayser M 2013 The HIrisPlex system for simultaneous prediction of hair and eye colour from DNA. Forensic Sci Int Genet. 7: 98– 115. 22917817
- Whittle A 1996 Europe in the Neolithic: the creation of new worlds. Cambridge: Cambridge University Press.
- Zilhão J 2001 Radiocarbon evidence for maritime pioneer colonization at the origins of farming in west Mediterranean Europe. Proc Natl Acad Sci U S A. 98: 14180– 14185 11707599 PMC61188
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- Authors
- Olalde, I., Schroeder, H., Sandoval-Velasco, M., Vinner, L., Lobón, I., Ramirez, O., Civit, S., García Borja, P., Salazar-García, D. C., Talamo, S., María Fullola, J., Xavier Oms, F., Pedro, M., Martínez, P., Sanz, M., Daura, J., Zilhão, J., Marquès-Bonet, T., Gilbert, M. T. P., & Lalueza-Fox, C.
- Affiliations
- Leiden University (NL)
- University of Copenhagen (DK)
- Universitat Pompeu Fabra (ES)
- Universitat de Barcelona (ES)
- Max Planck Institute for Evolutionary Anthropology (DE)
- University of Lisbon (PT)
- ORCID
- Venue
- Molecular Biology and Evolution
- Publisher
- Oxford University Press (OUP)
- Published
- 2015-09-02
- Volume
- 32
- Issue
- 12
- Pages
- msv181
- ISSN
- 0737-4038 (ISSN-L)
- 1537-1719
- PMC
- PMC4652622
- OpenAlex
- W2165515385
- Cited by
- 207
- References
- 15
- Citations by year
- 2026: 7 · 2025: 9 · 2024: 24 · 2023: 16 · 2022: 19 · 2021: 21 · 2020: 14 · 2019: 21 · 2018: 20 · 2017: 39 · 2016: 15 · 2015: 2
- FWCI
- 17.41
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc
- Locations
- Molecular Biology and Evolution (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc)
- Repositori digital de la UPF (Universitat Pompeu Fabra) (publishedVersion, cc-by-nc)
- MPG.PuRe (Max Planck Society) (submittedVersion, cc-by-nc)
- Leiden Repository (Leiden University) (submittedVersion)
- Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
- DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by-nc)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc)
- RECERCAT (Consorci de Serveis Universitaris de Catalunya) (submittedVersion, other-oa)
- Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion)
- Repository of Digital Objects for Teaching Research and Culture (University of Valencia) (submittedVersion, other-oa)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Funders
- Fundación BBVA
- European Commission (245743, 2007–2013, FP7 2007-2013, 319209, FP7/2007)
- National Research Foundation
- Danmarks Grundforskningsfond (DNRF94)
- Generalitat de Catalunya (HAR2011-26193, 2014/100639, grant 2014 SGR 464, 2014 SGR 464, 2014SGR)
- Eusko Jaurlaritza
- Generalitat Valenciana (APOSTD/2014/123)
- Max-Planck-Gesellschaft
- Banco Bilbao Vizcaya Argentaria
- Fondation Maison des Sciences de l’Homme
- Fundação para a Ciência e a Tecnologia (HAR2011-26193)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Archaeology and ancient environmental studies
- Keywords
- Cardial culture, complete genome sequence, Near East
- MeSH terms
- Farmers, Agriculture, Base Sequence, Culture, DNA, Mitochondrial, Emigration and Immigration, Ethnicity, Genetics, Population, Haplotypes, Humans, Italy, Spain, Genetic Variation, Genome, Human, Sequence Analysis, DNA, Mediterranean Region, White People
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