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The Palomero Genome Suggests Metal Effects on Domestication

Author:
Vielle-Calzada, Jean-Philippe, Martínez de la Vega, Octavio, Hernández-Guzmán, Gustavo, Ibarra-Laclette, Enrique, Alvarez-Mejía, Cesar, Vega-Arreguín, Julio C., Jiménez-Moraila, Beatriz, Fernández-Cortés, Araceli, Corona-Armenta, Guillermo, Herrera-Estrella, Luis, Herrera-Estrella, Alfredo
Source:
Science 2009 v.326 no.5956 pp. 1078
ISSN:
0036-8075
Subject:
Zea mays, corn, domestication, evolution, genes, heavy metals, inbred lines, landraces
Abstract:
Maize domestication (Zea mays ssp. mays L.) resulted in a wide diversity of native landraces that represent an invaluable source of genetic information for exploring natural variation and genome evolution. We sequenced de novo the approximately 2-gigabase genome of the Mexican landrace Palomero Toluqueño (Palomero) and compared its features to those of the modern inbred line B73. We revealed differences concordant with its ancient origin and identified chromosomal regions of low nucleotide variability that contain domestication genes involved in heavy-metal detoxification. Our results indicate that environmental changes were important selective forces acting on maize domestication.
Agid:
2210587