The origin and evolution of maize in the Southwestern United States

Rute A R da Fonseca; Bruce D. Smith; Nathan Wales; Enrico Cappellini; Pontus Skoglund; Matteo Fumagalli; José Alfredo Samaniego; Christian Carøe; María C. Ávila-Arcos; David E. Hufnagel; Thorfinn Sand Korneliussen; Filipe Garrett Vieira; Mattias Jakobsson; Bernardo Arriaza; Eske Willerslev; Rasmus Nielsen; Matthew B. Hufford; Anders Albrechtsen; Jeffrey Ross-Ibarra; M. Thomas P. Gilbert

doi:10.1038/nplants.2014.3

The origin and evolution of maize in the Southwestern United States

Rute A R da Fonseca, Bruce D. Smith, Nathan Wales, Enrico Cappellini, Pontus Skoglund, Matteo Fumagalli, José Alfredo Samaniego, Christian Carøe, María C. Ávila-Arcos, David E. Hufnagel, Thorfinn Sand Korneliussen, Filipe Garrett Vieira, Mattias Jakobsson, Bernardo Arriaza, Eske Willerslev, Rasmus Nielsen, Matthew B. Hufford, Anders Albrechtsen, Jeffrey Ross-Ibarra, M. Thomas P. Gilbert

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Abstract

The origin of maize (Zea mays mays) in the US Southwest remains contentious, with conflicting archaeological data supporting either coastal 1-4 or highland 5,6 routes of diffusion of maize into the United States. Furthermore, the genetics of adaptation to the new environmental and cultural context of the Southwest is largely uncharacterized 7. To address these issues, we compared nuclear DNA from 32 archaeological maize samples spanning 6,000 years of evolution to modern landraces. We found that the initial diffusion of maize into the Southwest about 4,000 years ago is likely to have occurred along a highland route, followed by gene flow from a lowland coastal maize beginning at least 2,000 years ago. Our population genetic analysis also enabled us to differentiate selection during domestication for adaptation to the climatic and cultural environment of the Southwest, identifying adaptation loci relevant to drought tolerance and sugar content.

Original language	English
Article number	14003
Number of pages	5
Journal	Nature Plants
Volume	1
DOIs	https://doi.org/10.1038/nplants.2014.3
Publication status	Published - 8 Jan 2015

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da Fonseca, R. A. R., Smith, B. D., Wales, N., Cappellini, E., Skoglund, P., Fumagalli, M., Samaniego, J. A., Carøe, C., Ávila-Arcos, M. C., Hufnagel, D. E., Korneliussen, T. S., Vieira, F. G., Jakobsson, M., Arriaza, B., Willerslev, E., Nielsen, R., Hufford, M. B., Albrechtsen, A., Ross-Ibarra, J., & Gilbert, M. T. P. (2015). The origin and evolution of maize in the Southwestern United States. Nature Plants, 1, Article 14003. https://doi.org/10.1038/nplants.2014.3

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title = "The origin and evolution of maize in the Southwestern United States",

abstract = "The origin of maize (Zea mays mays) in the US Southwest remains contentious, with conflicting archaeological data supporting either coastal 1-4 or highland 5,6 routes of diffusion of maize into the United States. Furthermore, the genetics of adaptation to the new environmental and cultural context of the Southwest is largely uncharacterized 7. To address these issues, we compared nuclear DNA from 32 archaeological maize samples spanning 6,000 years of evolution to modern landraces. We found that the initial diffusion of maize into the Southwest about 4,000 years ago is likely to have occurred along a highland route, followed by gene flow from a lowland coastal maize beginning at least 2,000 years ago. Our population genetic analysis also enabled us to differentiate selection during domestication for adaptation to the climatic and cultural environment of the Southwest, identifying adaptation loci relevant to drought tolerance and sugar content.",

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da Fonseca, RAR, Smith, BD, Wales, N, Cappellini, E, Skoglund, P, Fumagalli, M, Samaniego, JA, Carøe, C, Ávila-Arcos, MC, Hufnagel, DE, Korneliussen, TS, Vieira, FG, Jakobsson, M, Arriaza, B, Willerslev, E, Nielsen, R, Hufford, MB, Albrechtsen, A, Ross-Ibarra, J & Gilbert, MTP 2015, 'The origin and evolution of maize in the Southwestern United States', Nature Plants, vol. 1, 14003. https://doi.org/10.1038/nplants.2014.3

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AU - Cappellini, Enrico

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AU - Fumagalli, Matteo

AU - Samaniego, José Alfredo

AU - Carøe, Christian

AU - Ávila-Arcos, María C.

AU - Hufnagel, David E.

AU - Korneliussen, Thorfinn Sand

AU - Vieira, Filipe Garrett

AU - Jakobsson, Mattias

AU - Arriaza, Bernardo

AU - Willerslev, Eske

AU - Nielsen, Rasmus

AU - Hufford, Matthew B.

AU - Albrechtsen, Anders

AU - Ross-Ibarra, Jeffrey

AU - Gilbert, M. Thomas P.

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The origin and evolution of maize in the Southwestern United States

Abstract

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