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The use and domestication ofTheobroma cacao during the mid-Holocene in the upper Amazon
- Sonia Zarrillo ORCID:orcid.org/0000-0001-7147-38821,2 na1,
- Nilesh Gaikwad3,4 na1,
- Claire Lanaud5,6 na1,
- Terry Powis7,
- Christopher Viot5,6,
- Isabelle Lesur8,9,
- Olivier Fouet5,6,
- Xavier Argout5,6,
- Erwan Guichoux8,
- Franck Salin8,
- Rey Loor Solorzano10,
- Olivier Bouchez11,
- Hélène Vignes5,6,
- Patrick Severts12,
- Julio Hurtado13,
- Alexandra Yepez13,
- Louis Grivetti14,
- Michael Blake ORCID:orcid.org/0000-0001-6292-09272 &
- …
- Francisco Valdez15
Nature Ecology & Evolutionvolume 2, pages1879–1888 (2018)Cite this article
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Abstract
Cacao (Theobroma cacao L.) is an important economic crop, yet studies of its domestication history and early uses are limited. Traditionally, cacao is thought to have been first domesticated in Mesoamerica. However, genomic research shows thatT. cacao’s greatest diversity is in the upper Amazon region of northwest South America, pointing to this region as its centre of origin. Here, we report cacao use identified by three independent lines of archaeological evidence—cacao starch grains, absorbed theobromine residues and ancient DNA—dating from approximately 5,300 years ago recovered from the Santa Ana-La Florida (SALF) site in southeast Ecuador. To our knowledge, these findings constitute the earliest evidence ofT. cacao use in the Americas and the first unequivocal archaeological example of its pre-Columbian use in South America. They also reveal the upper Amazon region as the oldest centre of cacao domestication yet identified.
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Data availability
NCBI GenBank accession numbers of theTheobroma mitochondrial reference sequences areMF462389,MF462390 andMF462396 toMF462398. Examples of PCR amplified mitochondrial ancient DNA sequences identified asT. cacao sequences are reported in Supplementary Figs.2–4. All results on ancient DNA sequences obtained after DNA capture and containing SNPs are reported inSupplementary Information; corresponding SNPs from the collection of modern accessions, used as controls, are reported in the Tropgene database (http://tropgenedb.cirad.fr/tropgene/)52. Additional data that support the findings of this study are available from the corresponding author on reasonable request.
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Acknowledgements
S.Z.’s research was funded by a Social Sciences and Humanities Research Council of Canada Doctoral Fellowship and an Honorary Isaak Walton Killam Memorial Scholarship, as well as the Martha Biggar Anders Memorial Award (2008, 2009, 2011), a Graduate Research Scholarship, a Faculty of Graduate Studies Travel Award, a Graduate Studies Scholarship and a Graduate Student Association Professional Development Grant from the University of Calgary. We thank the Universidad San Francisco de Quito, Riobamba and the University of British Columbia, Okanagan for use of laboratory facilities for some of S.Z.’s research. Funding for this project was provided by a Hampton Research Grant (no. F11-00878) from the University of British Columbia. Funding for archaeological excavations at SALF was provided by IRD. This project is supported by Agropolis Fondation under the reference ID 1202-029 through the Investissements d’avenir programme (Labex Agro: no. ANR-10-LABX-0001-01). The Hiseq sequencing activities were made in collaboration with the GeT platform, a partner of the National Infrastructure France Génomique, with thanks for support by the Commissariat aux Grands Investissements (no. ANR-10-INBS-0009). We are grateful to P. Lachenaud for providing genotyping by sequencing data on Guina group, to H. Kucera for assisting with Biochemical analyses, to N. Waber for preparing Fig.1 and M. Berard for assistance in preparing Figs.2 and3. We also thank The United States Department of Agriculture, Agricultural Research Services, Plant Genetic Resources Conservation Unit for generously supplyingTheobroma andHerrania pods and the Centro Agronómico Tropical de Investigación y Enseñanza (CATIE—Costa Rica) and the Cocoa Research Center, University of West Indies (CRC, Trinidad and Tobago) for providingTheobroma andHerrania leaves for modern DNA analyses.
Author information
These authors contributed equally: Sonia Zarrillo, Nilesh Gaikwad, Claire Lanaud.
Authors and Affiliations
Department of Anthropology and Archaeology, University of Calgary, Calgary, Alberta, Canada
Sonia Zarrillo
Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada
Sonia Zarrillo & Michael Blake
Department of Nutrition and Department of Environmental Toxicology, West Coast Metabolomics Center, University of California, Davis, CA, USA
Nilesh Gaikwad
Gaikwad Steroidomics Laboratory, Davis, CA, USA
Nilesh Gaikwad
CIRAD, UMR AGAP, Montpellier, France
Claire Lanaud, Christopher Viot, Olivier Fouet, Xavier Argout & Hélène Vignes
AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
Claire Lanaud, Christopher Viot, Olivier Fouet, Xavier Argout & Hélène Vignes
Department of Geography and Anthropology, Kennesaw State University, Kennesaw, GA, USA
Terry Powis
INRA-UMR BIOGECO, Cestas, France
Isabelle Lesur, Erwan Guichoux & Franck Salin
HelixVenture, Mérignac, France
Isabelle Lesur
Instituto Nacional de Investigación Agropecuaria Estación Experimental Tropical Pichilingue, Quevedo, Provincia de Los Ríos, Ecuador
Rey Loor Solorzano
INRA, GeT-PlaGe, Genotoul, Castanet-Tolosan, France
Olivier Bouchez
New South Associates Inc., Stone Mountain, GA, USA
Patrick Severts
Ministerio de Cultura y Patrimonio, Ecuador/IRD, Quito, Ecuador
Julio Hurtado & Alexandra Yepez
Department of Nutrition, University of California, Davis, CA, USA
Louis Grivetti
Institut de Recherche pour le Développement, UMR 208 PALOC, MNHN-IRD, Marseille, France
Francisco Valdez
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Contributions
F.V., M.B., S.Z., T.P., N.G. and C.L. designed the research. F.V., J.H., A.Y. and S.Z. performed excavations at Santa Ana-La Florida. S.Z. designed starch investigation methods and performed starch granule analysis. T.P. and P.S. sampled artefacts for theobromine analysis. N.G. designed mass spectrometry analysis, performed UPLC-MS/MS analyses and processed and analysed mass spectrometry data. L.G. provided general input to the overall project. C.L., C.V., I.L., O.F., X.A., E.G., F.S. and R.L.S., performed aDNA experiments and analyses. H.V. and O.B. performed NGS aDNA sequencing. S.Z., C.L., N.G., T.P., M.B. and F.V. led the writing of the paper with inputs from all other authors.
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Correspondence toMichael Blake.
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Supplementary information
Supplementary Information
Supplementary Notes; Supplementary Figures 1–8; Supplementary Tables 3–9 and 11–16
Supplementary Table 1
Radiocarbon dates from the Santa Ana-La Florida site, Palanda (Zamora-Chinchipe, Ecuador)
Supplementary Table 2
Total SALF samples analysed for starch grains, theobromine and aDNA
Supplementary Table 10
List of aDNA sequences specific to Theobroma and containing SNPs identified by GBS
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Zarrillo, S., Gaikwad, N., Lanaud, C.et al. The use and domestication ofTheobroma cacao during the mid-Holocene in the upper Amazon.Nat Ecol Evol2, 1879–1888 (2018). https://doi.org/10.1038/s41559-018-0697-x
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