A western Sahara centre of domestication inferred from pearl millet genomes

Burgarella, C and Cubry, P and Kane, N A and Varshney, R K and Mariac, C and Liu, X and Shi, C and Thudi, M and Couderc, M and Xu, X and Chitikineni, A and Scarcelli, N and Barnaud, A and Rhoné, B and Dupuy, C and François, O and Berthouly-Salazar, C and Vigouroux, Y (2018) A western Sahara centre of domestication inferred from pearl millet genomes. Nature Ecology & Evolution. pp. 1-7. ISSN 2397-334X

PDF - Published Version Restricted to ICRISAT users only Download (2MB) | Request a copy

Abstract

There have been intense debates over the geographic origin of African crops and agriculture. Here, we used whole-genome sequencing data to infer the domestication origin of pearl millet (Cenchrus americanus). Our results supported an origin in western Sahara, and we dated the onset of cultivated pearl millet expansion in Africa to 4,900 years ago. We provided evidence that wild-to-crop gene flow increased cultivated genetic diversity leading to diversity hotspots in western and eastern Sahel and adaptive introgression of 15 genomic regions. Our study reconciled genetic and archaeological data for one of the oldest African crops.

Item Type:	Article
Divisions:	Research Program : Genetic Gains
CRP:	UNSPECIFIED
Uncontrolled Keywords:	African crops, agriculture, pearl millet, cenchrus americanus, domestication origin, western Sahara, wild tocrop gene flow, genetic diversity, diversity hotspots, western and eastern Sahel, genetic and archaeological data, adaptive introgression, genome sequencing, genomics
Subjects:	Others > Agriculture Mandate crops > Millets Mandate crops > Millets > Pearl Millet Others > Genetics and Genomics Others > African Agriculture Others > Africa Others > Sub-Saharan Africa
Depositing User:	Mr Ramesh K
Date Deposited:	08 Aug 2018 04:51
Last Modified:	08 Aug 2018 04:51
URI:	http://oar.icrisat.org/id/eprint/10827
Official URL:	http://dx.doi.org/10.1038/s41559-018-0643-y
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	We are grateful to the Genotoul sequencing platform Toulouse Midi-Pyrenees for help during sequencing. We also want to thank N. Tando and the IRD itrop Plantes Santé bioinformatic platform for providing HPC resources and support for our research project. Y.V. acknowledges support from the Agence Nationale de la Recherche (ANR-13-BSV7-0017). C.B.-S. acknowledges support from Agropolis Fondation under the reference ID 1403-057 through the Investissements d’avenir programme (Labex Agro: ANR-10-LABX-0001-01).
Links:

View Statistics

Actions (login required)

View Item