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Multiproxy evidence highlights a complex evolutionary legacy of maize in South America

  • Logan Kistler
  • , S. Yoshi Maezumi
  • , Jonas Gregorio De Souza
  • , Natalia A.S. Przelomska
  • , Flaviane Malaquias Costa
  • , Oliver Smith
  • , Hope Loiselle
  • , Jazmín Ramos-Madrigal
  • , Nathan Wales
  • , Eduardo Rivail Ribeiro
  • , Ryan R. Morrison
  • , Claudia Grimaldo
  • , Andre P. Prous
  • , Bernardo Arriaza
  • , M. Thomas P Gilbert
  • , Fabio De Oliveira Freitas
  • , Robin G. Allaby
  • Smithsonian Institution
  • University of Warwick
  • University of Exeter
  • The University of the West Indies
  • Universidade de São Paulo
  • University of Copenhagen
  • University of Washington
  • University of York
  • University of Oxford
  • Universidade Federal de Minas Gerais
  • Norwegian University of Science and Technology
  • Empresa Brasileira de Pesquisa Agropecuária

Research output: Contribution to journal › Article › peer-review

226 Scopus citations

Abstract

Domesticated maize evolved from wild teosinte under human influences in Mexico beginning around 9000 years before the present (yr B.P.), traversed Central America by ~7500 yr B.P., and spread into South America by ~6500 yr B.P. Landrace and archaeological maize genomes from South America suggest that the ancestral population to South American maize was brought out of the domestication center in Mexico and became isolated from the wild teosinte gene pool before traits of domesticated maize were fixed. Deeply structured lineages then evolved within South America out of this partially domesticated progenitor population. Genomic, linguistic, archaeological, and paleoecological data suggest that the southwestern Amazon was a secondary improvement center for partially domesticated maize. Multiple waves of human-mediated dispersal are responsible for the diversity and biogeography of modern South American maize.

Original languageEnglish
Pages (from-to)1309-1313
Number of pages5
JournalScience
Volume362
Issue number6420
DOIs
StatePublished - 14 Dec 2018

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